Kaye Netpac II User guide

Amphenol

Advanced Sensors

Netpac®

User’s Manual

Validation

M4402-4 Rev. C

April 2014

A

Netpac®

Remote Modules for Conditioning and Measurement

User’s Manual

M4402-4 Rev. C
April 2014

mphenol

Advanced Sensors

Copyright © 2014 Amphenol Thermometrics, Inc.

967 Windfall Road

St. Marys, PA 15857-3333, USA

Web: www.amphenol-sensors.com

[no content intended for this page]

ii

Contents

Chapter 1. Overview

1.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.1.1 Distributed I/O Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.1.2 Remote Scanner and On-Board Signal Processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2 Module Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2.1 Multi-Drop Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2.2 Single Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2.3 Multi-Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.2.4 Card Layouts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.3 Analog Control Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.4 Digital Control Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Chapter 2. Installation

2.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.2 Mounting Single Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.2.1 NEMA 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.2.1a Three Hole Mounting Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.2.1b Four Hole Mounting Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.2.2 NEMA 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.2.3 Open Style . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.3 Mounting Multi-Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.3.1 NEMA 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.3.2 Rack Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

2.3.3 Open Style . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.4 Power Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.4.1 Factory Installed Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

2.4.2 Customer Installed Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

2.4.3 Power Frequency Jumper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

2.4.4 Analog Control Card. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

2.4.5 Dip Switch S1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

2.4.6 Power Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

2.4.7 Baud Rate Jumper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

2.4.8 Default Resolution Jumper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

2.4.9 I/O Cards for Analog Control Card. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

2.4.10 Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

2.4.11 High Voltage lnput . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

2.4.12 Thermocouples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

2.4.13 RTD’s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

2.4.14 Current Transmitters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

2.4.15 Contact Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

2.4.16 Contact Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

2.5 Digital Control Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

Netpac® User’s Manual iii

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2.5.1 DIP Switch S1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

2.5.2 Power Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

2.5.3 Baud Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

2.5.4 I/O Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

2.5.5 Analog Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

2.6 System Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

2.6.1 Host Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

2.6.2 Interface Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

Chapter 3. Communication Protocol

3.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

3.1.1 Autoscan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

3.1.2 I/O Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

3.2 Command Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

3.2.1 Response Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

3.2.2 Checksum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

3.2.3 Transmission Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

3.2.4 Command Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

3.2.5 Status <A> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

3.2.6 Block Scan <B> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

3.2.7 Contact Input Channel <C> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

3.2.8 Data <D> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

3.2.9 Engineering Unit <E> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

3.2.10 Degrees <F0> or <F1>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

3.2.11 Go <G> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

3.2.12 Data Format <H0> or <H1>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

3.2.13 Interrogate <I>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62

3.2.14 Thermal Block Measurement <J> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

3.2.15 Contact Assign <K> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

3.2.16 Measured Data <M> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64

3.2.17 Calibrate/Zero/Thermal Block Measurement <Q>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65

3.2.18 Resolution <R>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

3.2.19 Scan <S> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

3.2.20 Talk <T> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

3.2.21 Untalk <U> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

3.2.22 Value <V> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

3.2.23 Contact Actuate <X> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

3.2.24 Zero <Z>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68

iv Netpac® User’s Manual

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Chapter 4. Netpac with GE Hosts

4.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69

4.2 Netpac and Auto Family . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69

4.2.1 Power-Up Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69

4.2.2 Operation Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70

4.2.3 Netpac and the Ten/60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70

4.2.4 Baud Rate Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71

4.2.5 Power Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72

4.2.6 Internal Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73

4.2.7 External Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73

4.2.8 Diagnostic Error Accumulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74

4.2.9 Operation Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75

4.2.10 Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75

4.2.11 Netpac Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

4.2.12 Logic Triggered Scans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78

Appendix A. System Specifications

A.1 Netpac Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79

A.2 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

A.3 Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82

A.4 Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82

A.5 Voltage Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82

A.6 Communications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82

A.6.1 Maximum Channel Capacity - Single Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83

A.6.2 Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83

A.7 Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83

A.8 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83

A.9 Input Conditioning Types for Digital Control Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84

A.9.1 Dry Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84

A.9.2 Isolated AC, 80 to 150 Volts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

A.9.3 Isolated High Volts, 80 to 150 Volts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85

A.9.4 Low Level, 15m VAC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85

Netpac® User’s Manual v

Contents

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vi Netpac® User’s Manual

Chapter 1. Overview

Chapter 1. Overview

1.1 Introduction

This user's guide describes Netpac installation and programming for system engineers and includes these chapters:

• Chapter 1, Overview, describes Netpac's capabilities, module configurations, Netpac models, and card layouts.

• Chapter 2, Installation, explains how to mount Netpac and covers power connections, control and I/O card settings,

and wiring.

• Chapter 3, Communications Protocol, presents Netpac commands, formats, responses, and examples.

• Chapter 4, Netpac with Kaye Hosts, supplements information for Kaye datalogger user's guides.

• Appendix A - System Specifications

• Hardware Warranty and Return Policy

1.1.1 Distributed I/O Network

Netpac remote modules condition, measure, linearize and send input signals to the host on command. You can link
modules together to form a distributed I/O network, located up to 16,000 feet from the host. Netpac modules
communicate over an RS-485 bus using a single twisted pair cable.

Netpac modules provide direct connection to a variety of sensors and transducers, including voltage, current,
thermocouple, RTD, pulse, frequency, and status inputs. Netpac also provides contact and analog outputs.

1.1.2 Remote Scanner and On-Board Signal Processor

Netpac performs both remote scanning and on-board signal processing. This includes analog-to-digital conversion,
linearization to engineering units, and thermocouple ice-point compensation. A Netpac channel stores the resulting
data (actual volts, degrees, percentages, contact status, period, frequency, etc.).

The host sends instructions to Netpac and requests data. From the host, you send outputs to your process using Netpac.
The host can be a computer or one of the following Kaye dataloggers: AutoGraph™, AutoLink™, AutoCalc™, or Ten/
60™.

1.2 Module Configurations

A Netpac module consists of an analog or digital control card with its associated I/O card set(s) and a power supply.
Netpac modules are available in both single and multi-module configurations. A single module holds one control card
(analog or digital) and one I/O card set. A multi-module consists of either one analog or digital control card and up to
five I/O card sets, or one analog and one digital card set with up to six I/O card sets.

A control card directs the multiplexing/demultiplexing of the signals, performs engineering units conversion, stores
data in a channel, and is the communication link between the Netpac module and the host.

Netpac® User’s Manual 1

Chapter 1. Overview

1.2.1 Multi-Drop Configuration

In a multi-drop configuration, you can address up to 16 Netpac control cards for each port on the host. Each control
card is housed in a single or multi-module. The number of ports and total number of inputs and outputs depends on the
host.

1.2.2 Single Module

Supports one control card, either analog or digital, and one input or output card set with up to 20 channels of I/O. Three
models are available: NEMA 2 or NEMA 4 enclosure, and Open Style. You can order the Open Style ready to mount in
your own enclosure. See Figure 1 on page 3 for models, and Figure 3 on page 6 for card layout.

Table 1 below outlines the available models and the number of channels supported by each type of Netpac.

Table 1: Types of Single Module Netpacs

Model Description Channel

Voltage/TC/Current*/Contact Input

High Voltage Input

RTD Input

TTL/CMOS input, 5-15V for f/p/s/t 10

Frequency/Period/Status/Totalize (f/p/s/t) Isolated input, 80-150V for f <5 KHz/p/s/t 10

Isolated AC/DC detector, 80-150V, s/ only 10

Analog Output 0-10V, 0-5V, 4-20mA, 1-5mA 5

Contact Output 2A at 30 VDC, 0.6A at 125 VAC 20

2-wire inputs 20

3-wire inputs 20

0-150 VDC, 2-wire 20

0-150 VDC, 3-wire 20

3-wire 100

3-wire 10

4-wire 100

Dry contact for f/p/s/t 10

15mV AC input for f/p/t 10

 Pt

 Cu

 Pt

20

20

10

*25

 shunt resistor required for each current input.

2 Netpac® User’s Manual

1.2.2 Single Module (cont.)

Open Style

NEMA 2

NEMA 4

Chapter 1. Overview

Figure 1: Single Module Nepac Models

Netpac® User’s Manual 3

Chapter 1. Overview

1.2.3 Multi-Module

A multi-module can contain one or two modules (see Module Configurations on page 1). Three models of multi­module Netpacs are available: Open Style, NEMA 4, and Rack Mount (see Figure 2 on page 5).

The analog control card supports up to five analog card sets and one hundred channels of I/O. The digital control card
supports up to five digital card sets and fifty channels of I/O. Each control card or card set occupies one slot in the
multi-module Netpac chassis.

Two slots are available for the control cards (one analog and one digital) and six slots for the I/O card sets. See Figure 3
on page 6, Figure 4 on page 6 and Figure 5 on page 7 for card layouts. The multi-module NEMA 4 incorporates the
Open Style card rack.

Channels associated with analog control cards are numbered in groups of 20 according to placement of the I/O card in
relation to the control card.

Card Number Channel Number

0 00-19

1 20-39

2 40-59

3 60-79

4 80-99

Channels associated with digital control cards are numbered in groups of 10 according to the I/O card number.

Card Number

0 00-09

1 10-19

2 20-29

3 30-39

4 40-49

Channel Number

Most of the host-to-Netpac command formats reference the card number and then channel (see Chapter 3, Command
Protocol). A few reference only the channel (for example, the resolution command).

4 Netpac® User’s Manual

1.2.3 Multi-Module (cont.)

Open Style

NEMA 4

Rack Mount

Chapter 1. Overview

Figure 2: Multi-Module Netpac Models

Netpac® User’s Manual 5

Chapter 1. Overview

1.2.4 Card Layouts

Figure 3: Card Layout , Single Module Open Style

Figure 4: Card Layout, Multi-Module Open Style

6 Netpac® User’s Manual

Chapter 1. Overview

1.2.4 Card Layouts (cont.)

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Figure 5: Card Layout, Multi-Module Rack Mount

The factory supplies a variety of multi-module card sets to accommodate most common industrial applications. Table 2
below lists card sets supported by the analog control card, and Table 3 on page 8 lists those supported by the digital
control card.

1.3 Analog Control Card

The analog control card converts analog signals from thermocouples, RTD’s, etc. to a digital representation and sends
the signals to the host. It also processes commands from the host and opens or closes contacts on a contact output card.

Table 2: Card Sets Supported by Analog Control Card

Model Description Channel

Voltage/TC/Current*/Contact Input

High Voltage Input

RTD Input

Contact Output 2A at 30 VDC, 0.6A at 125 VAC 20

2-wire inputs 20

3-wire inputs 20

0-150 VDC, 2-wire 20

0-150 VDC, 3-wire 20

3-wire 100

3-wire 10

4-wire 100

 platinum

 copper

 platinum

20

20

10

*25

 shunt resistor required for each current input.

7 Netpac® User’s Manual

Chapter 1. Overview

1.4 Digital Control Card

The digital control card sets the range, resolution and operating mode of the Frequency/Period/Status/Totalize card,
stores the digital value from each pulse input, and sends the data to the host. The digital control card also drives the
analog output card.

Table 3: Card Sets Supported by Digital Control Card

Model Description Channel

Dry contact for f/p/s/t 10

TTL/CMOS input, 5-15V for f/p/s/t 10

Frequency/Period/Status/Totalize (f/p/s/t) Isolated input, 80-150V for f <5 KHz/p/s/t 10

Isolated AC/DC detector, 80-150V, s/ only 10

15mV AC input for f/p/t 10

Analog Output 0-10V, 0-5V, 4-20mA, 1-5mA 5

8 Netpac® User’s Manual

Chapter 2. Installation

Chapter 2. Installation

2.1 Introduction

This chapter of the user's guide describes how to install each type of Netpac single and multi-module. It includes:

• Mounting instructions

• Power connections and power source selection

• Analog and digital control card settings

• I/O card settings

• Interface converter connections

Figures 6 through 10 show physical dimensions and card layout.

2.2 Mounting Single Modules

2.2.1 NEMA 2

The base plate has three original mounting holes located under the card sets and four mounting holes located in the four
corners of the baseplate for easy access. In either case, you must supply the mounting hardware (mounting standoff,
etc.)

Follow the mounting instructions for either the three hole mounting or the four hole mounting as indicated below.

2.2.1a Three Hole Mounting Instructions

Access the holes by loosening the card retainers at the rear of the assembly and then sliding the card sets and control
card from the card cage. Once the cards are removed, place the baseplate on the mounting surface and use it as a
template to mark the mounting holes. Mount the modules so that dust and moisture cannot enter the enclosure through
the mounting holes.

2.2.1b Four Hole Mounting Instructions

Place the Netpac baseplate on the mounting surface and use it as a template to mark the four mounting holes. Mount the
modules so that dust and moisture cannot enter the enclosure through the mounting holes. Refer to Figure 6 on page 10.

Netpac® User’s Manual 9

Chapter 2. Installation

1.36 (35)

(22) 0.88 17.50 (445)

3.56 (90) 7.66 (195)

1.00 (25)

6.56

(167)

(38) 1.50

(16) 0.63

18.00 (457)

7.38 (187)

Ø.25 (6.4)

7 places for

#10 mtg screws

3.44

(87)

19.25 (489)

11.50

(292)

Overall Dimensions

(Chassis w/ Cover)

Dimensions are in inches (millimeters).

Baseplate

Mounting Hole

Locations

Figure 6: NEMA 2 Single Module Dimensions

10 Netpac® User’s Manual

0.56 (14.3)

2.00

(51)

20.00

(508)

0.63 (16)

21.25

(540)

0.63 (16)

Ø0.44

(11.2)

10.00 (254)

16.00 (406)

14.38 (365)

0.63 (16)

7.38 (187)

3.00 (76)

FRONT VIEW

Door Open

SIDE VIEW

Door Closed

Dimensions are in inches (millimeters).

Chapter 2. Installation

Figure 7: NEMA 4 Single Module Dimensions

Netpac® User’s Manual 11

Chapter 2. Installation

2.2.2 NEMA 4

Recommended when the operating environment is highly moist, dusty or corrosive. The NEMA 4 single module is also
designed for wall mounting, and requires conduit fittings for communications and signal wiring. See Figure 7 on
page 11.

2.2.3 Open Style

Single modules are shipped in a card cage for mounting in your own enclosure. The module is secured to a shipping
plate that you can use for mounting. Or, you can detach the module from the plate and mount it in your own card cage.
Mounting the Open Style is similar to the NEMA 2 except there is no cover. See the mounting pattern in Figure 6 on
page 10 for dimensions.

2.3 Mounting Multi-Modules

2.3.1 NEMA 4

A conduit plate is mounted on the bottom. Determine the hole size required for conduit fittings, remove the plate and
install the fittings before you wire the unit.

You can rotate the inner tray that holds the card cage by rotating the enclosure 180° so that the wiring entry is at the top.
Remove the spring-loaded locking pins and washers that serve as a hinge for the inner tray. Locate the washers and
hinge pins on the opposite side. See Figure 8 on page 13.

WARNING!

The door and inner tray of the multi-module are heavy and have tight clearances. Prevent them
from slamming closed while wiring or servicing the equipment or severe personal injury could
result .

12 Netpac® User’s Manual

28.50

27.75 (705)(29) 1.13

30.00 (762)

31.25
(794)

28.50
(724)

30.00
(762)

1.06 (27)

Ø0.41 (10.3)

Ø0.34 (8.7)

8.25

(210)

(11) 0.44

19.63 (498)

4.63

(117)

Notes:

1. Dimensions are in inches (millimeters).

2. Cabinet may be oriented as shown for bottom
cable access or upended for top cable access.

30.00
(762)

24.50
(622)

Mounting Hole in Flange

4 places

Mounting Hole in Cabinet

4 places

Gasketed Plate over Cable Access Slot

PC Card Cage

TOP VIEW

REAR VIEW

BOTTOM VIEW

Chapter 2. Installation

Figure 8: NEMA 4 Multi-Module Dimensions

Netpac® User’s Manual 13

Chapter 2. Installation

19.00 (483)

18.31 (465)

5.38

(137)

8.75

(222)

14.38
(365)

17.25 (438)

.25 x .38 (6 x 10)

Mounting Holes

4 places

POWER SUPPLY

DIGITAL

CONTROL CARD

ANALOG

DVM/CONTROL

CARD

I/O CARDS (6)

2.3.2 Rack Mount

Fits into a standard 19-inch rack (see Figure 9 below). An integral power supply, powered from 115 or 230 VAC, 50 or
60 Hz, provides operating voltages for any mix of control cards and input/output card sets.

Figure 9: Rack Mount Multi-Module Dimensions

14 Netpac® User’s Manual

Chapter 2. Installation

2.3.3 Open Style

Designed for a laboratory quality environment, or for use in customer housings, the Open Style multi-module is
packaged with the card cage portion mounted on a shipping plate (see Figure 10 below).

Figure 10: Open Style Multi-Module Dimensions

Netpac® User’s Manual 15

Chapter 2. Installation

–

+

–

+

–

+

–

+

SHSH

RS 422 DIGITAL

12/24 V

DC IN

ANALOG

12/24 V

DC IN

RS 422

2.4 Power Connections

Netpac modules require an operating voltage of either +12 VDC or +24 VDC. The operating voltage can come from
the factory installed power supply that operates from a source of 115 or 230 VAC, 50 or 60 Hz, or from your own DC
source.

2.4.1 Factory Installed Power Supply

Set the power selection jumper (P5 on the analog control card and not designated on the digital control card) according
to the following paragraphs. See Figure 14 on page 19 and Figure 33 on page 38 for the location of the power select
jumper on the control cards. The fuse located on the control card is rated 2A.

If the power supply is factory installed, the following applies:
The Open Style and NEMA 4 modules have a 24V power supply and the jumper is always set at +24V. The Rack Mount
module and the single Netpac NEMA 2 have a 12V power supply and the jumper is set to 12V.

If you have more than one control card in a NEMA 4 or Open Style multi-module Netpac, a second power supply is
required. One supply provides operating power to the analog bus and the other to the digital bus. This configuration
prevents ground loops and provides adequate power to both buses.

All Rack Mount multi-modules include a 12V power supply which is sufficient for two control cards.

In the multi-module, the AC power is installed below the module on the inner frame of NEMA 4 or Open Style models.
The AC input is routed to the power supply using a switch, also mounted on the inner frame. An LED indicates when
power is on.

In the single module, the AC input is routed to the power supply using a terminal strip located next to the power supply.

With the NEMA 4 enclosure, the switch and LED face you when the frame is closed. If you must open the frame for
servicing, make sure the switch is OFF and the LED is not lighted. When two power supplies are required, both have a
power input switch and LED.

WARNING!

See Figure 11 below for the power terminal strip.

The sensor wiring that connects the input modules can float at hazardous voltage levels even
after power is removed.

Figure 11: Power Terminal Strip

16 Netpac® User’s Manual

Chapter 2. Installation

+24/12 VDC PWR

VDC PWR RTN

+24/12 VDC PWR

VDC PWR RTN

RS485+

RS485–

RS485 SHIELD

RS485+

RS485–

RS485 SHIELD

10

1

DC+

DC–

GND

AUX DC+

AUX DC–

GND61

SW1

21

43

SW2

21

43

DS2

B

A

DS1

B

A

2.4.2 Customer Installed Power Supply

When using your own DC power, Kaye recommends a +24 VDC power source with the single Netpac module. This
accommodates voltage sags of greater than 10% without affecting the accuracy of the data. A single module dissipates
approximately 11W (12.6W at power-up) and a fully loaded multi-module dissipates approximately 34W.

Connect the 115V AC input to TB2, pins 4, 5, and 6, and connect the 24V output to the Netpac power terminal strip. If
you are installing two power supplies, connect the AC to screws 1, 2, and 3; screw 1 is grounded.

WARNING!

Do not connect the 115 or 230 VAC cord to the terminal strip or damage will result. See Figure 12
below and Figure 13 on page 18, Netpac Wiring Diagrams.

Figure 12: Wiring for Internal Power Supply

If your power supply is external to Netpac, connect the power supply to the DC terminal strip, screws 4, 5, and 6; screw
4 is grounded. If you have two external supplies, connect the second to screws 1, 2 and 3 (see Figure 13 on page 18).

Netpac® User’s Manual 17

Chapter 2. Installation

12VDC Power Supply for

Digital Control Card

12345678

HOT NEUT + RET

AC INPUT

12VDC OUTPUT

PS2

12VDC Power Supply for

Digital Control Card

12345678

HOT NEUT + RET

AC INPUT

12VDC OUTPUT

PS1

GND NEUT HOT GND NEUT HOT

16

TB2

DIGITAL
POWER

ON

OFF

ANALOG

POWER

ON

OFF

DIGITAL
POWER

PILOT

ANALOG

POWER

PILOT

SW1

DS1

DS2

SW2

2.4.2 Customer Installed Power Supply (cont.)

115V AC IN 115V AC IN

Figure 13: Wiring for External Power Supply

2.4.3 Power Frequency Jumper

The power frequency jumper (P15) sets the timing for analog to digital conversion and indicates how much normal
mode noise is integrated out of the data conversion. It reflects the AC power used by surrounding equipment.

PI5 is located at the right rear corner of the analog control card. Install the jumper across the pins that reflect your
typical source, 50 Hz or 60 Hz (see Figure 14 on page 19 for the jumper location).

18 Netpac® User’s Manual

Chapter 2. Installation

DS1

TB1

TB2

NO
POLE
NC

NO
POLE
NC

S1

24V
12V

P5

60

50

P15

2
1

1/4

1200
9600

19200

300

P14

2.4.4 Analog Control Card

The analog control card converts analog signals from thermocouples, RTD's, voltage, and current to a digital
representation and transmits the signal to the host. It also processes commands from the host and opens or closes
contacts on a contact output card and at TBI on the control card.

This subsection describes how to set the following switch and jumpers on the analog control card, shown in Figure 14
below:

• DIP switch S1

• Power selection jumper (P5)

• Power frequency jumper (P15)

• Baud rate jumper (P14)

• Default resolution jumper (P16)

Figure 14: Analog Control Card Components

TB1 is a contact output on the analog control card, and TB2 is the watchdog timer. See DIP Switch S1 on page 20,
Contact Output on page 34, and the Contact Actuate <X> command on page 67, for information.

Netpac® User’s Manual 19

Chapter 2. Installation

12345678

ON

Slide

1-4

5
6
7
8

Purpose Set to

Module Address
Auto Scan/Calibrate
Watch Dog Relay
Contact Output
Checksum

0 0
Continuous Scan
CPU failure mode
Latched position
Enable

2.4.5 Dip Switch S1

DIP switch S1 on the analog control card controls the following functions:

Feature Slide

Netpac module address 1-4

Auto Scan/Calibrate 5

CPU or measurement failure mode

for watchdog timer

Reset contact outputs at power-up 7

Checksum 8

Sample settings of DIP switch S1 are shown in Figure 15 below. “ON” relates to the imprint on the switch. The
blackened areas show switch positions.

6

Figure 15: DIP Switch S1, Analog Cont. Card, Sample Settings

20 Netpac® User’s Manual

2.4.5 Dip Switch S1 (cont.)

Module Address: To set a unique address (00-15) for each Netpac module refer to Table 4 below.

Table 4: Setting Module Address for Analog Control Card

Module

Address Slide 1 Slide 2 Slide 3 Slide 4

00 ON ON ON ON

01 OFFONONON

02 ON OFF ON ON

03 OFF OFF ON ON

04 ON ON OFF ON

05 OFF ON OFF ON

06 ON OFF OFF ON

07 OFF OFF OFF ON

08 ON ON ON OFF

09 OFF ON ON OFF

10 ON OFF ON OFF

11 OFF OFF ON OFF

12 ON ON OFF OFF

13 OFF ON OFF OFF

14 ON OFF OFF OFF

15 OFF OFF OFF OFF

Chapter 2. Installation

Auto Scan/Calibrate Slide 5. When enabled, this feature continuously scans all channels and performs a

calibration every 25-30 seconds. Scanning consists of measuring, converting and storing the data at each channel. The
interval depends on the number of channels programmed, the resolution selected for each channel, and other system
activities, such as communications and command processing. Kaye recommends that you enable Auto Scan/Calibrate
by setting slide 5 to OFF.

Auto Scan/Calibrate is supported by the analog control card with firmware revision 1.10 or higher.

Netpac® User’s Manual 21

Chapter 2. Installation

2.4.5 Dip Switch S1 (cont.)

Watchdog Timer (TB2) Slide 6. Configures the watchdog timer (WDT) at TB2 on the control card to reset on CPU

failure or measurement failure.

CPU failure mode monitors on-board processor malfunctions. To enable CPU failure mode, set slide 6 to ON. If CPU
failure mode is selected and a CPU failure occurs, the WDT relay automatically resets the CPU and continues to do so
every six seconds unless the CPU responds by clearing the WDT.

Measurement failure mode determines if Netpac is processing measurements. To enable measurement mode failure, set
slide 6 to OFF. If you select measurement failure mode with a scan interval greater than six seconds, the WDT relay is
de-energized.

With closure, the scan can stop, Netpac failure can occur, or a network cable break or host failure can be the problem.

The watchdog timer is energized at power-up and the normally open (NO) contact TB2 is closed. If the CPU fails or a
measurement is not taken, TB2 returns to the open position after six seconds, depending on the mode you selected.

Note: The WDT relay is de-energized at power loss.

Contact Output Reset (TB1) Slide 7. Specifies what happens at power-up to the contact outputs on the contact

output cards as well as to local contact output at TBI (the contact output on the analog control card).

If you set slide 7 to OFF, all contact outputs, including TBI, reset to their normally open, normally closed positions at
power-up.

If you set slide 7 to ON, all contact outputs, including TBI, remain at the position they were in at the time of power loss.

Checksum Slide 8. To enable checksum, set slide 8 to OFF; to disable it, set it to ON. You must enable checksum if

you are using Netpac with a Kaye datalogger or KVIEW.

2.4.6 Power Selection

See Factory Installed Power Supply on page 16 for information on setting the power selection jumper.

2.4.7 Baud Rate Jumper

The baud rate jumper (P14) is located to the right of center on the control card. Install the jumper next to the baud rate
you want (300, 1,200, 9,600 or 19,200).

22 Netpac® User’s Manual

Chapter 2. Installation

2.4.8 Default Resolution Jumper

The default resolution jumper (P16) is located above the baud rate jumper. It sets the default resolution for all input
channels associated with the analog control card. Higher resolutions require more processing time for greater accuracy
and yield fewer samples per interval time.

Select the appropriate setting:

Jumper

Setting

2 line cycles 14 High

1 line cycle 13 Medium

¼ line cycle 11 Low

Bits Plus

Sign

Default

Resolution

When you program individual channels, you can override the jumper-selected resolution on a channel-by-channel
basis. Channels that are not programmed for a resolution assume the jumper setting as a default.

2.4.9 I/O Cards for Analog Control Card

The I/O cards associated with the analog control card do not require any jumper or switch settings.

Netpac® User’s Manual 23

Chapter 2. Installation

50V

Common Mode

Chassis

+50.0V

+51.5V

1.5V
Normal Mode

+
–

+
–

Shield

Netpac

Input Card

2.4.10 Voltage

Normal Mode. Refers to the difference in potential between the high (+) and low (–) input terminals of the input

module. You are usually measuring the sensor voltage, such as a thermocouple or RTD.

In Figure 16 on page 24, normal mode voltage is the 1.5V output of the battery. Noise picked up by your sensor or
cables increases or decreases the sensor normal mode voltage at the moment the reading is taken.

Common Mode. (AC or DC) Refers to identical voltage going to both terminals. Frequently caused by large currents

flowing in the ground path between your sensor and the measuring device, common mode voltage decreases reading
accuracy. Check your sensors to assure that common mode voltage cannot occur.

For example, if you connect a grounded thermocouple to the field windings of a 115 VAC motor to measure winding
temperature, you could apply a common mode voltage of 115 RMS (about 162V peak). Since the system is guarded, it
rejects common mode voltages, both AC and DC, and measures only the sensor voltage. Using the AC motor as an
example, you do not usually find errors in the temperature measurement, even though the AC common mode voltage is
many times greater than the thermocouple normal mode voltage.

WARNING!

In Figure 16 below, common mode voltage equally raises the absolute voltage at the high and low terminals.

Since sensors can be floated at hazardous voltage levels, disconnect all power prior to handling
any sensor leads. Failure to heed this warning could result in personal injury.

Figure 16: Normal/Common Mode Voltages

24 Netpac® User’s Manual

2.4.10 Voltage (cont.)

Limitations. To prevent damage to your signal input mode, Kaye recommends you follow this rule:

Chapter 2. Installation

CAUTION!

Never apply a voltage greater than 115V peak between any two input leads (high, low, or shield).
The maximum difference in common mode voltage between any two channels on a card must
not exceed 250V peak, and from card to card or card to ground frame must not exceed 350V.
Failure to heed this caution could result in permanent damage to the input modules.

Connections. See Figure 17 on page 26 for voltage connection diagrams. Use the two-wire multi-purpose input card

whenever the input signal is 10 VDC or less. Connect the sensor lead with the more positive potential to the (+)
terminal and the lead with the less positive potential to the (–) terminal. If you reverse these leads, the system measures
the Input signal indicating the opposite polarity.

WARNING!

The two-wire Netpac is fully shielded. However, the shield is not switched as channels are accessed. Give careful
consideration to the connection of the source to the input card. Improper connection can generate ground loops, cause
inaccurate readings, or be harmful to the equipment.

To protect yourself and the equipment, always disconnect sensor voltages before handling
signal cables. The sensors can be floating at some high potential. Failure to heed this warning
could result in personal injury.

• Two-Wire, Unshielded. If you are using two-wire, unshielded cable to connect the source to the input card, connect

the more positive lead to the (+) terminal and the less positive lead to the (–) terminal. Leave the shield terminal of
the input card unconnected.

• Two-Wire, Individually Shielded. If the sources are at the same common mode potential, connect the shield of one

source to the less positive lead as close to the source as possible. Leave the other shields unconnected at the source
end. At the input card, connect all shields together and then make a common connection to the shield (SH)
terminal.

If the sources are at different common mode potential, connect the shield to the (–) terminal of the channel at the input
card. At the source, do not leave a shield terminal unconnected. Alternatively, reverse this configuration by connecting
the shield to the source, but do not connect it at the input card.

CAUTION!

In either of the previous cases, never connect both ends of the shield at the same time.

• Two-Wire, Shielded Wire Bundles. If you are using 20 twisted wire pairs within a single shield, the same rules

apply as for two-wire, individually shielded cable.

• Three-Wire, Individually Shielded. The three-wire input card has a switched shield connection for each channel.

When the common mode source has a high impedance, connect the shield to the low side as close to the source as
possible. This allows most of the common mode current to flow in the shield leg and bypass input.

When the common mode source has a low impedance to the high input, connect the shield to the high side at the source.
If you are not using a remote guard connection, connect the jumper at the shield to the low input. Do not allow the
shield to float.

Netpac® User’s Manual 25

Chapter 2. Installation

–

+

–

+

–

+

–

+

–

+

SHIELD

Preferred

Individual

Shields,

Sources at

Different

CM Potential

Netpac

Input Card

–

+

–

+

–

+

–

+

–

+

SHIELD

Shielded

Wire Bundle,

Sources at

Same CM

Potential

Netpac

Input Card

–

+

–

+

–

+

–

+

–

+

SHIELD

Individual

Shields,

Sources at

Same CM

Potential

Netpac

Input Card

2 Wire

Unshielded

Two-Wire Version

T
B
#

–

+

SH

CHAN #

E

S

E

CM

R

S

High Impedance

Source

–

+

SH

CHAN #

E

S

E

CM

R

S

Low Impedance

Source

Three-Wire Version

2.4.10 Voltage (cont.)

Figure 17: Voltage Connections

26 Netpac® User’s Manual

2.4.10 Voltage (cont.)

15

–

+

–

+

–

+

–

+

–

+

–

+

–

+

–

+

–

+

–

+

–

+

–

+

–

+

–

+

–

+

–

+

–

+

–

+

–

+

–

+

16 17 18 19 SH

10 11 12 13 14 SH

56789SH

01234SH

TB4

TB3

TB2

TB1

TB4

TB3

TB2

TB1

Connections (cont.).

Chapter 2. Installation

Figure 18: 2-Wire Volts - Thermocouple Input Card

Netpac® User’s Manual 27

Figure 19: 3-Wire Volts - Thermocouple Input Card

Chapter 2. Installation

–

+

Netpac

Input Card

BLUE

T

RED

2.4.11 High Voltage lnput

If the input card is configured for high voltage inputs, the factory removes jumper JUI on the input card and places a
150:1 resistive divider network in series with the input signal. The system measures the lower voltage, multiplies the
result by 150, and transmits the data in engineering units that reflect the actual input.

To adjust the driver network, apply a known voltage to a single channel, access that channel in a continuous mode, and
adjust potentiometer R22 for the known input voltage.

Note: When jumper JU1 is removed and the divider installed, all input channels are subject to the divider action.

Low and high level signals cannot be mixed on the same input card.

2.4.12 Thermocouples

You can intermix thermocouple types on a single input card. Figure 20 below shows thermocouple connections.
Table 5 and Table 6 on page 29 show the material, color code, and polarity of the common thermocouple types. See
Appendix A for thermocouple specifications.

Figure 20: Thermocouple Connection

Calibration. lnput card calibration compensates for the temperature of the uniform temperature plane (UTP) at the input
termination. When measuring the input from the thermocouple, the system first measures the temperature of the UTP
and stores the result. It then measures the thermocouple input, subtracts the offset, and converts the remainder to
engineering units.

The adjustment is factory set, but to check or calibrate the input card, place one thermocouple from each input card into
an ice bath until the temperature stabilizes. Access the channel in a continuous mode for a 0°C or 32°F reading on that
channel. Repeat this procedure for each input card.

28 Netpac® User’s Manual

2.4.12 Thermocouples (cont.)

ANSI

Symbol Material Color Polarity

Table 5: Thermocouple Color Code

J

K

T

E

R

S

B

Iron White +

Constantan Red –

Chromel Yellow +

Alumel Red –

Copper Blue +

Constantan Red –

Chromel Purple +

Constantan Red –

Platinum Red +

10% Rh/Pt Black –

Platinum Red +

13% Rh/Pt Black –

Platinum 6% Rh Red +

Platinum 30% Rh Black –

Chapter 2. Installation

Table 6: Thermocouple Extension Wire Color Code

Color

ANSI

Symbol

JX

KX

TX

EX

SX

Material Single Duplex Polarity

Iron White White +

Constantan Red-White Red –

Chromel Yellow Yellow +

Alumel Red-Yellow Red –

Copper Blue Blue +

Constantan Red-Blue Red –

Chromel Purple Purple +

Constantan Red-Purple Red –

Copper Black Black +

Alloy/ 16 11 Red-Black Red –

Netpac® User’s Manual 29

Chapter 2. Installation

TB5

SH

I+

SIG+

SIG–

I–

SH

I+

SIG+

SIG–

I–

9

8

TB4

SH

I+

SIG+

SIG–

I–

SH

I+

SIG+

SIG–

I–

7

6

TB3

SH

I+

SIG+

SIG–

I–

SH

I+

SIG+

SIG–

I–

5

4

TB2

SH

I+

SIG+

SIG–

I–

SH

I+

SIG+

SIG–

I–

3

2

TB1

SH

I+

SIG+

SIG–

I–

SH

I+

SIG+

SIG–

I–

1

0

2.4.13 RTD’s

RTD’s are typically made from copper or platinum and have nominal resistances of 10 or 100 . See Appendix A for
RTD specifications.

The three-wire RTD has terminal connections for only the high (+), low (–), and shield on a per-channel basis. The
input card contains precision completion resistors for three legs of a bridge circuit (the fourth leg is the RTD) and has a
precision voltage source to supply excitation current. See Figure 22 below for a typical connection diagram. Lead
length compensation is provided if both signal leads are the same length.

A 4-wire RTD input has a constant current source to provide excitation to the RTD. Signal high (+) and low (–) and
positive and negative excitation are switched using photovoltaic relays on a per-channel basis. The 4-wire
configuration provides the highest accuracy by eliminating the lead resistance effect.

Figure 21: 3-Wire RTD Input Card

Figure 22: 4-Wire RTD Input Card

30 Netpac® User’s Manual

Chapter 2. Installation

RTD

INPUT CARD

SH

–

+

RTD

INPUT CARD

SH

–

+

2.4.13 RTD’s (cont.)

Figure 23: Typical RTD Connection

If your RTD is a two- or three-wire plus shield, connect the RTD as shown in the alternate connection diagram,
Figure 24 below. In a three-wire configuration, the shield must connect to the minus (–) signal lead at the RTD. The
third wire connects to the shield terminal of the input card. Do not leave the shield lead unconnected in either the two­or three-wire configuration.

Figure 24: Alternate RTD Connection

The following paragraphs describe how to connect 2-, 3-, or 4-wire RTD’s to a 4-wire input card.

The leads of most 3-lead RTD’s are labeled A, B, and C. If your RTD is labeled this way, connect the two common
leads to terminals (–) and (1–). Connect the other lead to (+). Add a fourth lead, and connect it to the single lead, as
close to the RTD as possible. Connect the added lead to (1+) terminal. Since the current source is referenced to shield,
connect the RTD sheath or shield to the (SH) terminal, as shown in Figure 25 on page 32, and terminate it at the source.

Netpac® User’s Manual 31

Chapter 2. Installation

SH

–II

ADD

AB

C

SH

–

+

+

–

I

I

SH

–

+

–

II

ADD

ADD

2.4.13 RTD’s (cont.)

+

–

+

Figure 25: 3-Wire RTD to 4-Wire Input Card

For a four-lead RTD, you must connect the two leads at one end to (+) and (I+). Connect the other two lines to (–) and
(I–) Connect the sheath or shield to the (SH) terminal as shown in Figure 26 below.

Figure 26: 4-Wire RTD to 4-Wire Input Card

For a two-lead RTD, you must connect an extra lead to both sides of the RTD (create a 4-lead RTD), and connect as
shown in Figure 27.

+

Figure 27: 2-Wire RTD to 4-Wire Input Card

When using either of the three-wire input cards, RTD measurements occur when you electrically place the RTD into a
bridge circuit as one-quarter of the bridge. Excitation is supplied to the bridge and any changes to the resistive device
are recorded as changes in temperature using resident software routines.

A constant current source provides excitation to the RTD, eliminating any line drops caused by lead resistance. Signal
high (+) and low (–) and positive and negative excitation are switched using photovoltaic relays on a per-channel basis.
The 4-wire configuration provides the highest accuracy by eliminating the lead resistance effect.

32 Netpac® User’s Manual

Chapter 2. Installation

2.4.13 RTD’s (cont.)

Calibrate the standard accuracy input and multiplex card by connecting a precision resistor equal to the ohmic value of
the RTD (for 0°C) across the plus, minus, and shield terminals of the input module. Access the assigned channel in a
continuous mode and adjust Rl for a reading of 0°C or 32°F.

The full bridge per channel, high accuracy input and multiplex cards are made with precision resistors and require no
calibration. Higher accuracy is obtained without switches in the bridge circuit when a bridge-per-channel configuration
is used.

The four-wire constant current input and multiplex pair are factory calibrated. However, R1 on the input card is
provided in the event calibration is necessary.

2.4.14 Current Transmitters

A current transmitter is a signal conditioner that converts the output from a sensor to a proportional current. Most
current transmitters produce an output of 4-20 mA, 10-50 mA or 0-1 mA. The manufacturer usually provides
calibration controls on the transmitter for setting zero (4 or 10 mA) and full scale (20 or 50 mA).

The input card provides the resistive terminations for use with either current transmitter. This termination is a 25-ohm,

0.05 percent resistor. These resistors are labeled R0 (channel zero) through R19 (channel 19). Refer to Figure 24 on
page 31 and insert them as required.

Data readout from a current transmitter is recorded as percent of full scale. If you use a 4-20 mA current transmitter, the
readout is 70 percent, the amount of current is actually 15.2 mA (0.7 times the range of 16 mA, plus the offset of 4
mA). As shown in Figure 24 on page 31, two terminals, usually labeled (+) and (–), are provided on the current
transmitter for connection to a DC power supply when placed in series with the measuring device.

In this system, the input module is considered the measuring device. Use a power supply recommended by the current
transmitter manufacturer. Connect the transmitter, DC power supply, and input module.

Shielded cables are not usually required with current transmitters. Connect the jumper at the shield terminal to either
the (+) or the (–) terminal on the input module.

Netpac® User’s Manual 33

Chapter 2. Installation

4

–

+

NETPAC

INPUT
CARD

R3

R9

R4

CURRENT

TRANSMITTER

DC
POWER
SUPPLY

+

–

–

+

NETPAC

INPUT

CARD

DRY CONTACT

2.4.14 Current Transmitters (cont.)

If you have a current input coming into a channel, install and solder a 25-ohm shunt resistor to the card at the resistive
(“R”) termination for the corresponding channel. The current transmitter supplies a proportional current and the system
measures the voltage drop across the resistor. (If you expect to reconfigure the channel and do not want to solder the
resistor, install the resistor under the channel screw terminals, between the plus and minus screw terminals.) Figure 28
below illustrates a resistor soldered at R4 for channel 4 input.

Figure 28: Current Transmitter Connection w/ 25 Shunt Resistor Soldered at R4

2.4.15 Contact Input

Connect the leads directly to the contact input terminals as shown in Figure 29 below. External power is not used to
monitor the status.

Figure 29: Contact Status Input Connection

2.4.16 Contact Output

The contact output on the analog control card is called TB1. A Watch Dog Timer contact, also on the analog control
card, is called TB2. With the analog control card, you can add contact output cards.

TBl is activated based on whether you select measurement or CPU failure at DIP Switch S1, Slide 6 (see DIP Switch S1
on page 20) or use the <X> command for contact actuate (see Chapter 3, Command Protocol).

34 Netpac® User’s Manual

Chapter 2. Installation

2.4.16 Contact Output (cont.)

Contact output cards are the same physical size as standard input cards and consist of a two-card set. The card with the
output wiring terminal strips is a Contact Output card, while the other is a Contact Select card. Each Contact Output
card accommodates up to 20 channels.

Each channel on the Contact Output card has three terminals that connect internally to a form C relay rated 2A at 30
VDC and 0.6A at 125 VAC resistive load. These relays are mechanically latched. Consider the characteristics of the
load before you connect the relays.

• If the load is resistive and within the specifications of the relays, no additional components are required.

• If the load is inductive and within the specifications of the relays, follow the instructions below.

• If the load exceeds the relay specifications, an intermediate relay is required. Verify that the contacts at the

intermediate relay support the load. Apply the design rules discussed below to protect the output of the
intermediate relay.

The intermediate relay coil presents an inductive load to the Contact Output card. Follow the instructions below for
hooking up an inductive load. We recommend that you use DC to drive the load. It produces less noise than AC.

Also, make sure you keep control wiring and power wiring separate. Never put them in the same conduit. Use the
maximum separation allowable.

After you connect the relay outputs, always test the system under full load to make sure that there is no interference to
the rest of the system. Symptoms of interference include jumpy or intermittent analog inputs.

Netpac® User’s Manual 35

Chapter 2. Installation

NC COM NO

Load

AC CHANNEL 0

Inductive

NC COM NO

Load

DC CHANNEL 0

Inductive

+

–

D

2.4.16 Contact Output (cont.)

AC Voltage --Inductive Load. Place a shunt across the load at the source of the noise, but never across the

terminals of the contact output card. See Figure 30.

Figure 30: AC Voltage Connection

Use this guide to help you select the values of C and R:
R is 0.5 to 1 per 1V contact voltage
C is 0.5 to 1µF per 1A contact current

The capacitor acts to suppress the discharge the moment the contact opens. The resistor limits the current at the next
power-up. Use AC type capacitors.

DC Voltage -Inductive Load. Place a diode (D) across the load at the source of the noise but never across the

terminals of the contact output card. See Figure 31.

The diode, that is connected in parallel, causes the energy stored in the load to dissipate as joule heat in the resistance
component of the inductive load.

36 Netpac® User’s Manual

Figure 31: DC Voltage Connection

Chapter 2. Installation

CHNL19

NC COM NO

CHNL18

NC COM NO

CHNL17

NC COM NO

CHNL16

NC COM NO

CHNL15

NC COM NO

TB4

CHNL14

NC COM NO

CHNL13

NC COM NO

CHNL12

NC COM NO

CHNL11

NC COM NO

CHNL10

NC COM NO

TB3

CHNL9

NC COM NO

CHNL8

NC COM NO

CHNL7

NC COM NO

CHNL6

NC COM NO

CHNL5

NC COM NO

TB2

CHNL4

NC COM NO

CHNL3

NC COM NO

CHNL2

NC COM NO

CHNL1

NC COM NO

CHNL0

NC COM NO

TB1

2.4.16 Contact Output (cont.)

Acknowledged Contact. When you program a contact output from a Kaye datalogger, you can select either an

acknowledged or non-acknowledged contact.

If you select acknowledge, the contact actuates whenever the programmed alarm condition occurs. Press <ACK> on
the datalogger front panel (or from the computer for an AutoLink host) to silence the audible alarm and deactivate any
such contact closure in alarm. If the alarm condition still exists at the next scan, the contact does not actuate and only
reactuates on a new alarm condition.

Non-Acknowledged Contact. If you select non-acknowledge, the contact actuates whenever the programmed

alarm condition occurs, and deactivates only when the alarm condition clears.

DIP Switch S1, slide 7, on the analog control card, affects the contact outputs. Refer to Analog Control Card on
page 19.

Figure 32: Contact Output Card Components

Netpac® User’s Manual 37

Chapter 2. Installation

1200

9600

19.2K

300

JU5

PLUGS INTO NETPAC MOTHERBOARD

24V

12V

DC INPUT SELECT

DC POWER SUPPLY

16

1

16

1

12345678

124816

32

BINARY

MODULE

ADDRESS

CHECKSUM

SW1

ON

0

1

DCB

A

BAUD

TP3

TP4

C36

ABCDEFGH J

DIGITAL CONTROL PC ASSY NO. 43180-010 E

1

2

3

4

5

6

7

8

P
R
O
M
S

R
A

M

S

TP1

TP2

DIGITAL LOGIC

2.5 Digital Control Card

A digital control card supports up to five digital input/analog output cards with up to 50 channels of I/O.

This subsection describes how to set the following switches and jumpers on the digital control card, shown in Figure 33
below:

• DIP switch S1

• Power selection jumper

• Baud rate (JU5)

Settings for I/O cards associated with the digital control card are also given in this subsection.

Figure 33: Digital Control Card

38 Netpac® User’s Manual

Chapter 2. Installation

12345678

ON

Slide

1-6

7
8

Purpose

Set to

Module Address
Not Used
Checksum

Module 01

-­Enable

2.5.1 DIP Switch S1

The eight-position DIP switch S1, located on the digital control card, sets the module address and controls checksum.

Module Address. Set the module address at slides 1 to 6 of DIP Switch S1. You have 64 (00-63) addresses available.

Table 4 on page 21 shows how to set the module address for the analog control card. You set the module address for the
digital control card in the same manner, except there are two additional slides (5 and 6) to access modules 16-63.

Note: Slide 7 is not used.

Checksum - Slide 8. To enable checksum, set slide 8 to OFF; to disable, set it to ON. You must enable checksum if

you are using Netpac with a Kaye datalogger or with KVIEW.

Sample settings of DIP switch S1 are shown in Figure 34 below. “ON” relates to the imprint on the switch.

Figure 34: Dip Switch S1 with Sample Settings

2.5.2 Power Selection

See Factory-Installed Power Supply on page 16 for information on selecting the jumper setting, and Figure 33 on
page 38 for location of the jumper, labeled “DC Input Select.”

2.5.3 Baud Rate

The baud rate jumper, JU5, is located near the center of the digital control card. Install the jumper at the position setting
you want:

A = 19,200 B = 9600 C = 1200 E = 300

Netpac® User’s Manual 39

Chapter 2. Installation

2.5.4 I/O Cards

This is the digital input card used with the digital control card. To make input connections to the 10-channel card,
connect the high and low leads from the source to the plus (+) and minus (–) terminals of a selected input channel.

Circuit Configurations: The F/P/S/T card is configured at the factory for one of the five types of circuit

configurations listed in Appendix A, Specifications. Configurations are shown in Figure 30 on page 36. The output of
F/P/S/T is normalized to provide a signal of close to +5 volts.

At the slide switch on this card, shown in Figure 36 on page 42, set the card address, frequency range code, and period
range code.

Card Address: Set the address at slide 5, 6, and 7. In a single module, always set the I/O card to 0.

Address Slide 5 Slide 6 Slide 7

0 ONONON

1OFFONON

2ONOFFON

3OFFOFFON

4ONONOFF

Frequency Range: Set the range at slides 1 and 2 of the eight-slide switch.

Slide 1

ON OFF 1 Hz 0-65535 Hz

OFF ON 0.1 Hz 0-6553.5 Hz

ON ON 0.01 Hz 0-655.35 Hz

Slide 2 Resolution Range Code

Period Range: Set the range at slide 3 and 4.

Slide 3

ON ON 1 ms 1-65535 ms

OFF ON 0.1 ms 0.1-6553.5 ms

ON OFF 0.01 ms 0.01-655.35 ms

OFF OFF 0.001 ms 0.001-65.535 ms

See Appendix A, Specifications, for maximum time to measure for frequency and period.

Slide 4 Period Netpac Range

40 Netpac® User’s Manual

Pulse

Conditioner

Dry Contact

Isolated High Volts Pulse Conditioner, 160-300V or 80-150V

Isolated AC/DC

80-150V, 160-300V

Low Level Pulse Conditioner

Chapter 2. Installation

Figure 35: Frequency/Period/Status/Totalize Card Configurations

Netpac® User’s Manual 41

Chapter 2. Installation

16

1

12345678

ON

0

1

–

CH9

+

–

CH8

+

–

CH7

+

–

CH6

+

–

CH5

+

–

CH4

+

–

CH3

+

–

CH2

+

–

CH1

+

–

CH0

+

1

32

1

32

P1

J1

PULSE CONDITIONER

PULSE COUNTER

FREQ

RANGE

CODE

CARD

ADDRESS

PERIOD

RANGE

CODE

3

PLUGS INTO NETPAC MOTHERBOARD

DIGITAL I/O SLOT

2.5.4 I/O Cards (cont.)

The Frequency/Period/Status/Totalize card set is made up of two cards. The pulse conditioner card takes the inputs, and
the pulse counter card holds the DIP switch.

Figure 36: Frequency/Period/Status/Totalize Card

42 Netpac® User’s Manual

Chapter 2. Installation

CH1 CH2 CH3 CH4

+

–

+

–

+

–

+

–

CH0

+

–

TB1

J5 J4 J3 J2 J1

1234

OPEN

0

1

2.5.5 Analog Output

Each card supports five analog channels (0-4), and has a selectable card number (0-4). It provides four individually
isolated current or voltage outputs: 0-5V, 0-10V, 1-5mA, and 4-20mA (see Figure 37 below).

Figure 37: Analog Output Card

Card Address: Set the address at slides 1 to 3 of the four-position switch S1. Slide 4 is not used. In a single module,

always set the address to 0.

Address Slide 1 Slide 2 Slide 3

0 OPEN OPEN OPEN

1 CLOSED OPEN OPEN

2 OPEN CLOSED OPEN

3 CLOSED CLOSED OPEN

4 OPEN OPEN CLOSED

Connector TB1: Wire the analog output device to the 10-pin plug provided with the connector, and reconnect the

plug to pins. Leads include output device (+) and ground (–). Figure 37 above shows the connector with a wired plug.

Voltage or Current: Set the ranges for each of the five channels on jumpers J1 to J5: 0-5V, 0-10V, 1-5mA, and 4-

20mA.

Output is set as a percentage of the selected range. See Figure 38 on page 44 for Analog Output jumper ranges.

Netpac® User’s Manual 43

Chapter 2. Installation

0-10V

0-5V

Pin 1

Pin 1

1-5 mA

4-20 mA

Pin 1

Pin 1

2.5.5 Analog Output (cont.)

Figure 38: Analog Output Jumper - Setting Voltage/Current

Initialization: When you first apply power, the digital control card checks for installation of an analog output card

before setting all channels to their minimum output value.

Calibration: As shown in Table 7 below, each analog output channel has a full scale SPAN and OFFSET adjustment,

and a full scale jumper. When adjusting the voltage output, use only the SPAN potentiometer. To adjust the span, install
the full scale jumper, adjacent to the potentiometer, and set to full scale using the SPAN adjustment. To set the offset,
remove the jumper and rotate the OFFSET potentiometer until you find the proper offset.

Table 7: Analog Output Card Configuration

Channel Pulse Span Offset +Pin –Pin RS Jumper

0F5R94R9312JU26

1F4R76R7534JU21

2F3R58R5756JU16

3F2R40R3978JU11

4 F1 R22 R21 9 10 JU6

44 Netpac® User’s Manual

Chapter 2. Installation

2.6 System Cabling

Netpac modules use a shielded, single twisted pair of wires to communicate to the host computer or Kaye datalogger.
Communication is in engineering units.

Note: Proper operation of the system requires that termination of the resistor match the characteristic impedance of

the cable. An external terminator is not required at the host end when the Ten/60 is the host. The terminator is
built into the interface assembly.

Establish communication between the host and Netpac modules with a modified, half-duplex RS-485 serial interface
on a two-wire bus. (Older versions of the Netpac backplane are silk screened with 422– and 422+. The new version is
silk screened with 485A and 485B.) Figure 39 shows the power terminal strip that is mounted on the backplane of the
single and multi-module.

Figure 39: Power Terminal Strip

2.6.1 Host Connections

If you are connecting the host to either a single or multi-module, connect the RS-485 input to the three connectors (+, –
, SH). If you are connecting the host to a group of modules, connect the cable from the host to one set of terminals, and
then connect the next module in the series to the other set of communications terminals. Continue this wiring method
until all modules are connected.

If your host is not RS-485 compatible, you must use the RS-232 to RS-422/485 converter. See Interface Converter
below.

If you are connecting to a Ten/60, connect the cable directly to J1 (port 1), J2 (port 2) or J3 (port 3) of the host interface
that is mounted in one of the option slots.

CAUTION!

The shield conductor should be connected to chassis ground at only one location in the system,
due to possible ground potential differences at different locations.

2.6.2 Interface Converter

To permit communication between Netpac units and hosts that use an RS-232 interface, an interface converter must be
installed at each port. For more information about the Communication interface converter (model V5000), contact the
factory.

Netpac® User’s Manual 45

Chapter 2. Installation

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46 Netpac® User’s Manual

Chapter 3. Communication Protocol

Chapter 3. Communication Protocol

3.1 Introduction

This section describes the communication interface between Netpac and a computer. It gives you all the commands you
need to communicate with Netpac, as well as examples of their use, format, and responses.

In this section, command characters appear within these bracket symbols: < >

Netpac modules use an asynchronous serial transmission format with eight data bits plus one start bit and one stop bit.

You can set the baud rate at 19,200, 9,600, 1,200, and 300. See Chapter 2, lnstallation, to set the baud rate.

Every character you send on the communications line (transferred or received by Netpac) is expressed as the ASCII
equivalent of the character.

The host controls all communications to and from Netpac. If Netpac is in the Talk mode, it returns status messages to
the host after it receives and acts on each command. If Netpac is in the Untalk mode, it receives and acts on commands
but does not return status messages except after certain commands.

3.1.1 Autoscan

When AutoScan is enabled, Netpac continuously scans all channels and performs a calibration every 25 seconds. Kaye
recommends you use the AutoScan feature. You enable or disable this feature on the analog control card at DIP Switch
S1 (see Chapter 2, Installation). If you disable AutoScan, a delay of several seconds occurs while the scan takes place,
and you must send the <Q> (calibrate) command. AutoScan does not apply to the digital control card.

3.1.2 I/O Cards

Most of the commands for I/O cards reference the card number and then the channel. A few commands (for example,
resolution) reference just the channel. You need to know the number of inputs on the card to designate the channel. See
Chapter I, Overview, for information on card layout.

3.2 Command Format

The commands you send from the host to Netpac must always begin with a colon and terminate with a carriage return.
The colon should not appear under any other circumstances during transmission. The system ignores any character in a
command that precedes the colon or follows the carriage return.

The command format is: address< >csCr where:

Address lead-in = :

Address characters = see below

Command character and

arguments

Checksum = cs (2 digits)

= < >

Carriage return = Cr

Netpac® User’s Manual 47

Chapter 3. Communication Protocol

3.2 Command Format (cont.)

Address characters are:

Char. Hex Address

? 3F All modules (broadcast)

mm

mmc Module and card number; “c” is I/O card 0-4. When no card

All characters are sent as ASCII equivalents. For example, if the command to the Netpac is:02E1403csCr, see Table 9
on page 51 to determine the following ASCII equivalents of the characters:

00-0F Module (analog)
00-3F Module (digital)

number is assigned, the default card number is zero.

: (address lead-in) 3A

02 (module number) 30 32

E (EU command) 45
14 (channel) 31 34
03 (EU of 55mV) 30 33

cs (checksum) 41 39
Cr (carriage return) 0D

48 Netpac® User’s Manual

Chapter 3. Communication Protocol

3.2.1 Response Messages

The three types of response messages are: data, status, and contact out echo.

Data Message: Transmits messages from Netpac to the host in either ASCII (<H0>) or Floating Point Numerical

(<H1>) format, depending on which format you select with <D> (see Data <D> in Command Descriptions on page 56).

The message format is :@(channel data)csCr where:

: = Address lead-in
@ = Message for host only
cs = Checksum
Cr = Carriage return

Message protocol:

• A short data message responds to an <S> (Scan) or single channel <D> (Data), and consists of the sign, six digits,

and a floating decimal point for a single channel. An example of a short message:

:@–.7352 cs Cr

• A long data message responds to these commands: <B> (Block), <G> (Go) followed by <cD> in the Talk mode, or

<I> followed by <cD> in Untalk mode. They are sent in a series of 20 data messages without separating carriage
returns and originate from the same module. Channel zero is sent first and channel 19 last. See Figure 40 on
page 56 for an example of a long data message.

Status Message: A module returns a status message to the host when, for example, it:

• Is talk-enabled and receives a command or communications error.

• Receives <I> and the previous command was not <S>, <G7, or <K> (Contact Assign).

• Receives a command that does not require immediate action by the selected module.

The message format is: @*ss where:

: = Address lead-in

@ = Message for host only

* = Message with only status information, not a data value.

ss = 2-digit module status message (see Table 8 on page 50).

Netpac® User’s Manual 49

Chapter 3. Communication Protocol

3.2.1 Response Messages (cont.)

00 = No errors, no new command received

01 = Command received, no errors to report

02 = Programming error

03 = Power-up flag not set

04 = Serial Framing error

10 = PROM check error

11 = RAM check error

12 = VCO check error

40 = Channel number out of range

41 = Card number not installed

42 = EU is not 40 for <V> (Value)

43 = Value out of range

44 = Overrange

45 = Power failure

50-65

= Checksum error for modules 00-15, where 50 = module 00.

Table 8: Module Status Messages

For example:

If you address module 04, and a status message of:@*54 is returned, you know by checking Table 8 above that a
checksum error occurred. If the selected module detects an error while Talk-enabled, it returns a message to the host. If
the module is not Talk-enabled and does not respond to <I>, a transmission error has occurred with the <I> command.
See Transmission Errors on page 53.

Contact Out Echo (COE) Message: Checks for Netpac receipt of the contact output commands before they are

actuated. (See the Contact Assign <K> command.)

50 Netpac® User’s Manual

Chapter 3. Communication Protocol

3.2.2 Checksum

Kaye highly recommends you use checksum at all times to determine errors in commands sent to Netpac or messages
returned to the host. (See DIP switch S1 in Chapter 2, Installation).

The transmitter of a command adds the ASCII-Hex representation of all characters in the response or command, and
then inserts the ASCII representation of the two low order digits following the command or response. (See Table 9
below.)

Table 9: ASCII–Hex Codes

20 SP 41 A 51 Q

2A * 42 B 52 R

2F / 43 C 53 S

30044D54T

31145E55U

32246F56V

33347G57W

34448H58X

35549 I 59Y

36 6 4A J 5A Z

37 7 4B K 5F –

38 8 4C L

39 9 4D M

3A : 4E N

3F ? 4F O

The receiver of the command or response does the same: it adds the characters and checks that the two low order digits
are equal to the received checksum.

Netpac® User’s Manual 51

Chapter 3. Communication Protocol

3.2.2 Checksum (cont.)

For example, suppose the host tells the module to set the 55mV range on module 02, channel 14 (:02E1403). By adding
the ASCII value of these characters, Hex 1A9 is produced:

Hex

:= 3A
0= 30
2= 32
E= 45
1= 31
4= 34
0= 30
3= 33

1A9

Since only the two low order digits are used, Hex A9 (A=41, 9=39) is included in the command. If the receiver
computes any other value, a “checksum error” status message is sent to the host and the command is ignored.

52 Netpac® User’s Manual

Chapter 3. Communication Protocol

3.2.3 Transmission Errors

Error conditions occur when a bad serial stream or improper command sequence is sent to the Netpac module. Netpac
does not act on a command if it detects an error. The host must implement a time-out when waiting for a response from
a module.

For example, when a module is in the Untalk mode (see <U> command), it cannot respond to an <I> command that is
in error. A subsequently correct <I> returns the status describing the nature of the previous error. A transmission error
can corrupt characters while Netpac is oblivious to that error.

The following rules apply to module responses for overall data and network integrity:

A checksum error is reported in a status message that indicates the address of the module. Check this address against
the Netpac module address you specified in the command to make sure it matches.

Send a message only once. Additional <I> commands result in a “Status 0” message. A module in the Untalk mode
cannot respond to <I> if it has not first received the <S> (Scan) command. A “Status 0” message informs the host that
the most recent <S> command was not received.

Table 10 below outlines the format and response for each command. A detailed description of the commands with
examples follows the table.

The following abbreviations are used in the commands:

mm = Module address

c= Card number
C = One channel (0-4)

CC = One channel (00-99)

ff = First channel in a block

nn = Number of channels

nnn =

3-digit Hex-bit number; each bit corresponds to one channel

nnnnn = 5-digit Hex-bit number; each bit corresponds to one channel

SS = Status (see Table 8 on page 50)

Table 10: Command Summary

Command Description Format Response Comment

A Status :mmA :@*SS Analog Ctrl only

B Block Scan :mmBffnn

C Contact Input-10 :mmcC :@nnn Digital Ctrl only

:@Csddddddd/ (not last)

:@Csddddddd (last)

Analog Ctrl only

Netpac® User’s Manual 53

Chapter 3. Communication Protocol

Command Description Format Response Comment

DRead Analog

E Engineering Unit :mmECCEU :@*SS Skip is default

F Degrees C :mmF0 :@*SS Ignored-Digital

G

H ASCII (default) :mmH0 :@*SS

I Interogate :mm1

JBlock

KContact Assign

M Voltage :mmM0 :@Csddddddd

Table 10: Command Summary (Continued)

:mmD

:mmcD 20 analog input channels

Data

:mmDCC

:mmcDC 1 analog output channel

Temperature

Unit

Degrees F

:mmF1 :@*SS

(default)

Go

:mmG :@*SS

Scan all

channels in

module

Delta Format

Floating point :mmH1 :@*SS

:mmJ

Temperature

:mmcJ

:mmKnnnn

n

:mmKnnnn

nX

:mmcKnnn

nn

:mmcKnnn

nnX

Last channel

measured

Last EU :mmM1 :@EXX

20 analog input channels

(0-19)

(20*c)-(20*c + 19)

1 analog input channel (00-

99)

(0-4); channels 8 and 9

give status of analog

output card

After S - One data

message

After D - 20 channel

message

After K - COE message

Any other - Status

message

:@*SS
:@*SS

:@nnnnn

:@*SS

:@nnnnn

:@*SS

Ignored-Digital

Analog Ctrl only

54 Netpac® User’s Manual

Chapter 3. Communication Protocol

Table 10: Command Summary (Continued)

Command Description Format Response Comment

Q Calibrate

R Resolution :mmRCCx :@*SS

S Scan :mmSCC Data if Talk enabled

T Talk (default) :mmT :@*SS

UUntalk:mmU

V Analog Output :mmVcCxxx

X Contact Actuate

ZZero

:mmQ

:mmcQ

.xx

:mmX

:mmcX

:mmXCC

:mmZ

:mmcZ

:@*SS Ignored-Digital

Response only with B, D or

I commands

:@*SS Digital Ctrl only

:@*SS
:@*SS
:@*SS

:@*SS
:@*SS

Analog Ctrl only

x = L, M, H or D

Ignored-Digital

Ignored-Digital

mm = Module address

c= Card number

C = One channel (0-4)

CC = One channel (00-99)

ff = First channel in a block

nn = Number of channels

nnn =

3-digit Hex-bit number; each bit corresponds to one

channel

nnnn

n

= 5-digit Hex-bit number; each bit corresponds to one

channel

SS = Status (see Table 8 on page 50)

Netpac® User’s Manual 55

Chapter 3. Communication Protocol

:@0-.7259 1C/1-.0635 9A/2-.0779 9A/3+.0011 8E/4-.0635/ 9D/5-.0790

A0/ 6-.0657 A3/7-.0791 A3/8-.0791 A4/9-.0768/ A9/0+.0735 98/1-.0579

A1/ 2-.0534 99/3+.1202 91/4+1859/ A4/5+.2383 9E6+.1169 A0/7+.0134

99/ 8-.0301 97/9-.0334 9E

3.2.4 Command Descriptions

Checksums and carriage returns are not included in the examples in this section. Assume they are part of the
commands.

3.2.5 Status <A>

Send once at the beginning of a command string or at the beginning of a programming session for module status. Refer
to Table 8 on page 50 for a complete list of status messages. A sampling of responses is given below.

The command format is: mmA

Command Response Message

:00A :@*00 No errors, no new command received

:@*01 Command received, no errors
:@*02 Programming Error

3.2.6 Block Scan <B>

lnstructs Netpac to scan the block of channels specified in the argument and to return the data immediately, even if the
module is in the Untalk mode. (The <S> command scans only one channel.)

With Block Scan, the processing time of the previous channel is overlapped with the integration time of the current
channel, resulting in increased channel throughput. If AutoScan is not enabled, a delay of several seconds can occur.
The command format is :mmBffnn

For example:

:00B0020 Instructs module 0 to scan and return 20 channels of

data (0-19)

The data format is :@Csdddddddcs/

where:

C = Channel number (0-9)

sdddddd

s = sign (+) or (–), and d = data characters

d

cs =

Checksum

/= More to come in a group

Figure 40 below is a sample of ASCII data returned from multichannels that are programmed for 10V inputs.

Figure 40: Sample ASCII Channel Data for <B>

56 Netpac® User’s Manual

Chapter 3. Communication Protocol

3.2.7 Contact Input Channel <C>

Requests contact input status for all 10 inputs. (Use <C> only with a digital control card.) <C> requires both a module
and card address. The addressed Netpac returns a three-character data string that reflects the contact input status of all
10 inputs. The command format is :mmcC

For example:

:001C Returns data from module 0, card 1 (channels 20-39)

The return data string indicates the status in Hex format.

Example:

ASCII Equivalent of Bits
:@000 All contacts open (00 0000 0000)
:@001 Channel 0 closed (00 0000 0001)
:@00A Channels 3 and 1 closed (00 0000 1010)

:@3FF All channels closed (11 1111 1111)

3.2.8 Data <D>

Reads analog data. If a selected module is Talk-enabled or has received an <I> or <B> command, a data message is
returned with the value that is stored in memory for that channel or channel block.

Use this command to read analog input or output data for one channel or 20 channels, card 0 or another card.

The command formats are:

:mmD Reads data from channels 0-19 (by default).

:mmcD Reads a 20-channel group; the number preceding

the <D> indicates the card.

:mmDCC Reads data for one analog input channel (00-99).

:mmcDC Reads the current value of one analog output

channel (0-4), expressed as percentage of the range.

The status message is in Hex format, shown in

Table 11 on the next page. If you enter channel 8 or 9,

a status byte for the card is returned. Channel 8

returns overrange status, and

channel 9 returns power failure status.

Examples for each of the above commands:

:03D Reads analog input data from module 03 (channels

0-19). (See Figure 41 on the next page.)

:031D Reads data from module 03, card 1, channels 20-39.

(See Figure 41 on the next page.)

:04D88 Reads analog input data from module 04 (card 4),

channel 88. (See Response Messages on page 49.)

:043D2 Reads percentage range at module 04, card 3,

channel 2

Netpac® User’s Manual 57

Chapter 3. Communication Protocol

:@0-.7259 .0635 .0779 .0011 .0635 .0790 .0657 .0791 .0791

.0768/ .0735 .0579 .0534 .1202 1859 .2383 .1169 .0134

.0301 .0334

3.2.8 Data <D> (cont.)

Bits Status

Table 11: Status Messages for <D>

7 Card installed (0 if installed)

6Not used (always 0)

5Not used (always 0)

4 Overrange/power fail, channel 4 (0 if no fault)

3 Overrange/power fail, channel 3 (0 if no fault)

2 Overrange/power fail, channel 2 (0 if no fault)

1 Overrange/power fail, channel 1 (0 if no fault)

0 Overrange/power fail, channel 0 (0 if no fault)

Figure 41: Sample ASCII Channel Data for <D>

3.2.9 Engineering Unit <E>

Programs a channel for a specific EU.

The command format is :mmECCEU

Table 12 on page 59 lists EU codes, card types, formats for decimal placement, and significant digits used in the
measurements of all EU's. For example:

:02E1403 Programs module 02, channel 14 for an EU of 55 mV.

Current and analog output values (EU 20-22 and 40) are always represented by a percentage of full scale (0-100
percent). Any value out of that range results in status message 43 (refer to Table 8 on page 50).When programming
voltage ranges or skipping channels, assign Autorange (EU 02) if you are not sure of the range. This prevents
overrange conditions. The Autorange measurements shown in Table 8 conform to a format that is different from other
EU’s.

58 Netpac® User’s Manual

3.2.9 Engineering Unit <E> (cont.)

Code EU Card Type Format

01 Skip -- -­02 Autorange:

03 55mV Volts DC/TC ±##.###
04 100mV Volts DC/TC ±###.###
05 1V Volts DC/TC ±#.#####
06 10V Volts DC/TC ±##.####
07 T/C J Volts DC/TC ±#####.#
08 T/C K Volts DC/TC ±#####.#
09 T/C T Volts DC/TC ±#####.#
10 T/C E Volts DC/TC ±#####.#
11 T/C S Volts DC/TC ±#####.#
12 T/C R Volts DC/TC ±#####.#
13 T/C B Volts DC/TC ±#####.#
14

15

16

20 Current, 10-50mA (0-100% of range Volts DC/TC ±###.##
21 Current, 4-20mA (0-100% of range Volts DC/TC ±###.##
22 Current, 0-1mA (0-100% of range) Volts DC/TC ±###.##
23 0-150V High Volts ±###.##
24 Contact In (20) (0=closed; 1=open) Volts DC/TC 0.000 or 1.000
35 Frequency: F/P/S/T

36 Period: F/P/S/T

37 Contact In (10) F/P/S/T See <C> cmd.
38 Total Pulses F/P/S/T ±#####.
40 Analog Output (0-100% of range) Analog Out +xxx.xx
01 Contact Output Contact Out See <K> cmd.

RTD 100

RTD 100

Chapter 3. Communication Protocol

Table 12: Engineering Units

55mV -- ±.######

100mV -- ±.######

1V -- ±#.#####

10V -- ±##.####

 Pt (a=0.003925)

 Pt (a=0.00385)

RTD 10

 Cu

10Hz ±#####0.

1 Hz ±#####.

0.1 Hz ±####.#

0.01 Hz ±###.##

1 ms ±#####.

0.1 ms ±####.#

RTD ±#####.#

RTD ±#####.#

RTD ±#####.#

Netpac® User’s Manual 59

Chapter 3. Communication Protocol

3.2.10 Degrees <F0> or <F1>

Programs the selected module to return data in degrees Celsius or Fahrenheit. Select <F0> for Celsius or <F1> for
Fahrenheit (default).

The command format is :mmF0 or :mmF1

For example:

:03F0 Programs module 03 to return data in degrees

Celsius.

3.2.11 Go <G>

Scans the selected module once for channels with a programmed EU. If AutoScan is enabled, you do not need to send
this command for a scan. If AutoScan is not enabled, the scan takes several seconds to complete.

If the module is Talk-enabled, it returns a status message when the task is completed. If the module is not Talk-enabled,
data is held in memory until it receives an <I> or the data is written over in response to another <G>.

The command format is :mmG

For example:

:04G Scans all channels of each card in module 04 once.

The second form of this command is <GQ>. This results in zero, calibrate, thermal block measurements, as well as a
scan of all channels (see Calibrate/Zero/Thermal Block Measurement <Q> on page 65).

3.2.12 Data Format <H0> or <H1>

Formats response messages in ASCII (default) or floating point format. See Response Messages on page 49 for
information. Enter <HO> for ASCII and <HI> for floating point.

The command format is :mmH0 or :mmH1

For example:

:01H1 Formats module 01 for floating point.

60 Netpac® User’s Manual

Chapter 3. Communication Protocol

Exponent
1st byte
7 6 5 4 3 2 1 0

Mantissa MSB
2nd byte
7 6 5 4 3 2 1 0

Mantissa MSB-1
3rd byte
7 6 5 4 3 2 1 0

Mantissa LSB

4th byte

7 6 5 4 3 2 1 0

Mantissa sign

Exponent sign

Most significant mantissa bit

Least significant mantissa bit

3.2.12 Data Format <H0> or <H1> (cont.)

ASCII Format <HO>: Data in this format consists of the sign, six data digits, and decimal point. The format

includes trailing zeros, and leading zeros are converted to spaces.

These error messages are returned for channel data:
*SKIP Skipped channel
*OVRRNGE Out of range
*OPEN TC Open thermocouple
*PARITY Parity error
*COM.ERR Communication error
*MATH.ER Math error

If a measurement that uses a non-linear EU (thermocouple and RTD) is out of range of the linearization routines,
overrange data results.

Floating Point Numerical Format <H1>: Returns data in ASCII-Hex floating point format.

Program Netpac for the <H1> mode to communicate with hosts that require the floating point format shown in
Figure 42 below. In this format, the most significant bit (bit 31) indicates the sign of the mantissa, while bit 30 indicates
the sign of the exponent. The next six bits form the exponent and the remaining 24 bits form the mantissa.

The mantissa is expressed as a 24-bit (fractional) value. The exponent is expressed as a two’s complement 7-bit value
having a range of –64 to +63. The most significant bit is the sign of the mantissa (0 = positive, 1 = negative), for a total
of 32 bits. The binary point is to the left of the most significant mantissa bit (bit 23). All floating point data values are
normalized. Bit 23 must be equal to 1, except for the value zero (represented by all zeros) or when an error condition
exists.

For example, (84A00000) is equal to –10.0000.

Figure 42: Floating Point Format

Channel errors are reflected by a code in the most significant mantissa byte (second byte, bits 23-16):

01 = Skip channel
02 = Overrange
03 = Open thermocouple
04 = Parity error
05 = Communication error
06 = Math error

Netpac® User’s Manual 61

Chapter 3. Communication Protocol

3.2.13 Interrogate <I>

Returns data or status messages to the host regardless of the module’s Talk or Untalk state.

The command format is :mmI

For example:

:03I Requests status of module 03.

The module’s response is dictated by the command received prior to <I>.

Prior Command

Response to <I>

Scan <S> One short data message
Data <D> 20-channel data message

Contact Assign <K> COE (contact output echo) message

Any other command Status message

Note: Netpac is double-buffered for commands. If you want a response from an Untalk module after it has completed

the first command, send a separate <I> immediately after any other command.

62 Netpac® User’s Manual

Chapter 3. Communication Protocol

3.2.14 Thermal Block Measurement <J>

The thermocouple input module uses a nickel resistor in the Uniform Temperature Plane (UTP) with a reference bridge
source applied to it. In response to <J>, the module reads the voltage across the resistor, which corresponds to the
thermocouple reference junction temperature, and places this value in memory. When you request temperature data,
this value compensates the actual reference junction temperature with an ice point reference junction.

The command formats are :mmJ and :mmcJ

For example:

:03J Takes thermal block measurement (TBM) of module 03,

card 0.

:033J Takes TBM of multi-module 03, card 3.

(Use this format for multi-modules.)

3.2.15 Contact Assign <K>

Sends contact status for all 20 channels of a contact output card.

The command formats are
:mmKnnnnn
:mmKnnnnnX
:mmcKnnnnn
:mmcKnnnnnX

nnnnn is a 20-bit number represented by a 5-digit Hex-bit number expressed as an ASCII value, with each bit
corresponding to one channel.

If X is included in the command, the contacts are actuated immediately. If X is not included, the assignment is placed in
memory and a Contact Out Echo (COE) message is sent to the host. (See Response Messages on page 49.)

For example:

:03K00001 Assigns contacts at module 03, card 0.

:024K00001 Assigns contacts at module 02, card 4.

:033K00001X Assigns and actuates contacts at module 03,

card 3.

:04K2AC1F Closes the contact at module 04, card 0,

channels 0, 1, 2, 3, 4, 10, 11, 13, 15, and 17.

Netpac® User’s Manual 63

Chapter 3. Communication Protocol

3.2.15 Contact Assign <K> (cont.)

Table 13 below illustrates how we determined the hexadecimal value 2AC1F. First, you determine which contacts are
closed and then, using that binary number, convert each digit to its hexadecimal equivalent.

Table 13: Example for Determining Hexadecimal Value

Digits54321

Channels 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Contact

Status

HEX 2 A C 1 F

Following a <K> command and when an X is not present, Netpac returns a Contact Out Echo (COE) message to the
host to confirm that the module received the command before actuating the contacts.

The data format is :@nnnnn

See the <K> command format above for a description of (nnnnn). Each bit corresponds to one channel. A (1) indicates
a closed state and (0) indicates an open state.

0 0 1 0 1 0 1 0 1 1 0 0 0 0 0 1 1 1 1 1

3.2.16 Measured Data <M>

Retrieves the raw voltage or engineering unit number of the last processed channel at the analog control card. This
command gives meaningful information only when AutoScan is disabled.

In the case of thermocouples, the raw voltage is expressed as compensated millivolts. Other measurements could be
either volts or millivolts.

The command format is :mmM0 or :mmM1

<MO> returns the voltage from the most recently measured channel; the message format is :@Csddddddd.

<MI> returns the EU number assigned to the most recently measured channel; the message format is: @Em.

64 Netpac® User’s Manual

Chapter 3. Communication Protocol

3.2.17 Calibrate/Zero/Thermal Block Measurement <Q>

Performs a zero offset (refer to <Z> on page 68) plus a 10V calibration and a thermal block measurement (TBM) (refer
to <J> on page 63). The calibration measurement scales the full-scale VCO (Voltage Contact Oscillator) count to a
precise 10.000V reference. The measurement is stored in memory and later used as a reference to scale all calculations
to EU's.

The command formats are :mmQ and :mmcQ

For example:

:04Q Performs zero offset, calibration, and TBM on module 04,

card 0.

:042Q Performs zero offset, calibration, and TBM on

multi-module 04, card 2.

To scan all channels on all cards in a module, use <GQ>, referenced under the GO command on page 60.

3.2.18 Resolution <R>

Sets resolution on a per-channel basis. (See Default Resolution Jumper on page 23.) The three resolutions, high,
medium and low, equate to integration periods of two line cycles, one line cycle, or ¼ line cycle. You set the default
resolution at jumper-selected (P16) on the analog control card.

The command format is :mmRCCx, where x = L, M, H, or D

For example:

:00R01L Sets module 0, channel 1 to Low.

:02R21M Sets module 2, channel 21 to Medium.

:04R39H Sets module 4, channel 39 to High.
:03R50D Sets module 3, channel 50 to Default.

Netpac® User’s Manual 65

Chapter 3. Communication Protocol

3.2.19 Scan <S>

Measures a single channel or returns a calibration value. If the module is Talk-enabled, it returns a data message as
soon as data is available. <S> momentarily prevents the module from responding to other commands until the
accumulated data is stored. If you send a second command, it is stored and acted on when the module is free.

The command formats are :mmSCC and :mmScC

For example:

:02S18 Accesses module 02, which is in Untalk mode, scans

channel 18 and places the data in memory.

Use <S> in the format :mmScC to store the zero offset value of each range, the calibration voltage, and the
thermocouple block value. To obtain the zero offset value for the 55mV, 100mV, IV, or 10V ranges, indicate the range
in the channel (C) digit of the command format using these alpha characters.

A = 55mV
B = 100mV
C= 1V

D = 10V

E= Calibrate
F = Thermocouple block offset value

For example:

:03S0B Accesses module 03, card 0, and places in memory

the zero offset value for the 100mV range (B).

Note: You can retrieve the zero, calibrate, and thermocouple block values in memory and use them in later

calculations with <I> when you use it immediately after <S>. Zero and calibrate values are returned as VCO
counts, block values are in millivolts.

3.2.20 Talk <T>

Enables Netpac to respond to every command with a Status message, and is the default until an Untalk command is
sent.

The command format is :mmT

For example:

:03T <T> enables Netpac module 03 and requests a

Status message.

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Chapter 3. Communication Protocol

3.2.21 Untalk <U>

Prevents Netpac from sending a Status message in response to host-initiated commands, except when <I> is sent, or if
a communication error is detected with this command and then you send <T>.

The command format is :mmU

For example:

:03U Disables Netpac response to commands. (Netpac accepts and acts

on commands sent while in Untalk mode).

3.2.22 Value <V>

Sets a specific output channel on an analog output card to a value.

The command format is :mmVcCxxx.xx

xxx.xx represents between 0 and 100% of the range selected at the card jumper. When the command is executed, the
value is placed in the channel table and the output is adjusted accordingly. The control card checks for an overrange or
power fail and returns a status message.

For example:

:01V23100.00 Sets module 01, card 2, channel 3 at 100%

output value for the jumper-selected range.

3.2.23 Contact Actuate <X>

Closes or opens the contacts of the designated module according to criteria specified by <K>.

The command formats are

:mmX
:mmcX
:mmXCCx

x indicates the open (0) or closed (1) state of the contact.

For example:

:04X Actuates all contacts at module 04, (card 0).

:021X Actuates all contacts at module 02, card 1

(channels 20-39).

:03X801 Closes contact on channel 80 (indicated by 1).

Contact closure is immediate (X).

If you use Netpac command protocol to activate or deactivate the contact at TB1 and channel 99, use the following
commands and arguments:

:00X991 Closes TB1 and contact at channel 99.
:00X990 Opens TB1 and contact at channel 99.

See Analog Control Card on page 19 for information on TB1.

Netpac® User’s Manual 67

Chapter 3. Communication Protocol

3.2.24 Zero <Z>

Measures the zero offset on all four ranges and stores this value in memory for future calculations.

The command formats are :mmZ and :mmcZ

For example:

:03Z Measures module 03 (card 0).

:033Z Measures module 03, card 3 (channels 60-79).

68 Netpac® User’s Manual

Chapter 4. Netpac with Kaye Hosts

Chapter 4. Netpac with Kaye Hosts

4.1 Overview

Netpac operates with Kaye dataloggers or with hosts that run KVIEW™, The FIX™, or FIX DMACS™.

This section supplements the following Kaye datalogger user’s guides: AutoGraph, AutoCalc, AutoLink, and the Ten/

60.

To program Netpac from a Ten/60 or Auto family datalogger (except AutoCalc), you use the front panel of the
datalogger. With AutoCalc, Netpac is programmed at a computer.

If your host is running KVIEW, the menu-driven configuration program is KVCONFIG, described in the Netpac
subsection of the Kaye I/O Supplement in the KVIEW or Mini-Kview User's Guide.

If your host is running The FIX or FIX DMACS, use the menu-driven configuration program described in the Kaye I/O
Supplement.

The FIX and FIX DMACS are tradenames of lntellution Corporation.

4.2 Netpac and Auto Family

Auto family dataloggers communicate with Netpac using:

• Port 1, if you install an analog control card in the mainframe.

• Port 1 or 2 over a two-wire, RS-485 bus, if the control card is installed in an external module.

Up to 512 channels of local and remote I/O are available.

Interface the datalogger channel to Netpac using a module address (port, module number, and channel number). This
occurs when you answer the query, “NETPAC LOC.”

Assign the engineering unit to the Netpac channel when you answer the query, “EU?” Once the Netpac location and
engineering units are assigned, the Auto family datalogger sets up the channel table in memory and downloads this data
to Netpac.

4.2.1 Power-Up Sequence

When power is applied, the Auto family datalogger and the Netpac control card perform several tasks, including:

• Running internal and Netpac diagnostic test and reporting any RAM or PROM failures.

• Checking for non-response error messages from Netpac and noting which modules are enabled

• Reprogramming EU’s for all enabled Netpacs

Netpac® User’s Manual 69

Chapter 4. Netpac with Kaye Hosts

4.2.2 Operation Sequence

Communication between the Auto family datalogger and the Netpac control card consists of a constant series of
commands to talk to Netpac, initiate the scan sequence, read data, etc. These are some of the more important features of
this communication:

• If Netpac sends a power-fail message, the host automatically programs all engineering units and resolution when

power is reapplied.

• If power is removed from Netpac for any reason, the host makes five attempts to establish the communication link

before displaying the message, “Netpac module does not respond” (Error 53). The host tries to establish the
communication link every five seconds during the operation sequence. If a Netpac responds, the host programs it to
ensure proper operation.

• Netpac disregards skipped channels. If a Skip message is returned, the host assumes an error and automatically

programs all Netpac channels.

4.2.3 Netpac and the Ten/60

The Ten/60 issues commands to Netpac modules to: program engineering units (EU’s), scan all channels, retrieve data,
set status contacts, and retrieve status data. Up to 1,000 channels of local and remote I/O are available.

If Netpac modules are used with the Ten/60, you can designate specific Ten/60 channels or groups of channels as
external.

The Ten/60 stores all address information (port, module, and channel number), EU’s, and status for all Netpac modules
in internal memory.

The Ten/60 communicates with Netpac modules using the Netpac Interface Option (model U5040). The card occupies
one option slot at the rear of the Ten/60 and provides three Netpac ports.

If any module loses its programmed state (due to power failure or any other cause), the interface automatically
programs the module at power-up. The interface also handles any communication errors (see Error Codes on page 75).

70 Netpac® User’s Manual

Chapter 4. Netpac with Kaye Hosts

4.2.4 Baud Rate Selection

The Netpac and the Ten/60 interface must both transmit and receive at the same baud rate.

The interface’s three input/output ports operate at baud rates compatible with Netpac modules on the same port. DIP
Switch S1 on the interface card controls these baud rates. Slides 1 and 2 control port 1, slides 3 and 4 control port 2, and
slides 5 and 6 control port 3. See Table 2-1 on page 13 for slide positions and rates.

To set Netpac baud rates, see Analog Control Card on page 11 and Digital Control Card on page 30.

Table 14: Baud Rate Selection, Ten/60 Interface Card

Baud Rate

Port Switch 300 1,200 9,600 19,200

1 1, 2 0, 0 1, 0 0, 1 1, 1

2 3, 4 0, 0 1, 0 0, 1 1, 1

3 5, 6 0, 0 1, 0 0, 1 1, 1

Netpac® User’s Manual 71

Chapter 4. Netpac with Kaye Hosts

4.2.5 Power Selection

The interface card is automatically powered from the +5 VDC supplied on the Ten/60 system bus. The Netpac module
derives operating power in one of three ways: (1) +24 VDC supplied from the Ten/60 system bus, (2) an external DC
source connected to the DC input terminal board on the Netpac backplane, or (3) a DC source connected to DC input
terminals located on the Ten/60 interface card.

Figure 43: Ten/60 Interface Card

72 Netpac® User’s Manual

Chapter 4. Netpac with Kaye Hosts

4.2.6 Internal Power Supply

If the operating power for a Netpac module is derived from the
Ten/60 power supply using the system bus, a major constraint is imposed. Since the single Netpac module draws
approximately 0.5A per card, the Ten/60 can power only one or two single modules, depending on the number of
additional options connected to the system.

If you use this method, make sure that S3 is set to the C2 position and that the connector from the appropriate port has
five wires connected as shown in Table 15 below.

Table 15: Port Connectors

Pin Description

5 RS-485 (+)

4 RS-485 (–)

3 RS-485 (SH)

224 VDC (–)

1 24 VDC (+)

4.2.7 External Power Supply

If you use an external DC source to power the Netpac module, connect it to the power input terminal of each module.
Set S3 to the C1 (EXT) position.

You can connect external power directly to binding posts on the
Ten/60 interface. This routes power to each module using the port wiring shown in Table 15 above. Connect the high
side of the +24V to the post marked EXT DC+ (located near the upper left corner of the interface), and the low side to
the post marked EXT DC–. Make sure S3 is set to the C1 (EXT) position.

Note: You must select either 50 or 60 Hz at jumper (P15) on the Netpac control card to set the timing for the analog-

to-digital converter, even if your instrument is DC powered.

Netpac® User’s Manual 73

Chapter 4. Netpac with Kaye Hosts

4.2.8 Diagnostic Error Accumulation

To enable or disable the diagnostic error accumulation mode, use positions 7 and 8 of DIP Switch S1, with channels
190 through 198 the recipients of the error count. Specific assignments for each of these channels are given below:

190 = Number of received characters
191 = Number of transmitted characters
192 = Receiver transmit errors
193 = Receiver checksum errors
194 = Receiver framing errors
195 = Receiver wrong response
196 = Transmitter framing error
197 = Transmitter checksum error
198 = Transmitter wrong command

Diagnostic error accumulation is enabled whenever slides 7 and 8 are set opposite each other, and disabled whenever
the slides are set identically.

Scan and program datalogger channels 190-198 with a dummy argument. Use a Netpac assignment that is not included
in your system. For instance, if you have six 20-channel Netpacs assigned to port 1, you can use an assignment for a
seventh Netpac as your dummy argument. Use EU 54 and a Netpac location of 1,7,0,6. This corresponds to port 1,
module 7, channel 0, and a range of six. (If you use a range of 6, ignore the V returned after accumulation.)

If you use the diagnostic error accumulation as a troubleshooting tool, set a short interval such as 20 seconds. This
allows you to monitor the count prior to its clearance at the beginning of the next scan.

To accumulate total counts over many scan periods, use an additional group of inactive channels and perform a math
function.

For example, use channels 190-198 as the error channels and 200-208 as total accumulation channels. Program 190­198 as described, and program 200-208 as math channels. The expression for channel 200 is C190, C200, and the
expression for channel 201 is C191, C201, and so on. The algebraic expression is A + B. Include all channels in the
scan cycle. Totals of channels 200-208 are reset when the scan is restarted.

74 Netpac® User’s Manual

Chapter 4. Netpac with Kaye Hosts

4.2.9 Operation Sequence

At power on, a Ten/60 initiates a programming sequence with Netpac modules to:

• Send status messages to the host

• Test all RAM and PROM located on the Netpac modules, and report errors to the Ten/60

• Set all module channels at programmed EU's and resolutions, or the default (jumper-selected) resolution.

“NETPAC” is displayed on the CRT. The keyboard remains locked until programming is complete.

If you request a scan of Ten/60 channels that includes Netpac modules, the channel data is sent to the Ten/60 for display
or recording.

4.2.10 Error Codes

All error codes that apply to the Ten/60 also apply to Netpac. The following error codes are associated with Netpac
modules exclusively:

Error 49 Improper response from interface board
Error 50 Improper command sent to interface board
Error 51 Feature is not included in Netpac
Error 52 Netpac module is not using checksums
Error 53 Netpac module does not respond
Error 54 Netpac module failed diagnostic tests

Error 53, a temporary error, is generated if a previously programmed module loses communication or power. If the
module later resumes operation, it is reincorporated into the cycle and the error is canceled.

Error 54 is a permanent error. The only way to re-establish the system routine is to reapply power to the host after the
faulty module is removed from the scan sequence.

Netpac® User’s Manual 75

Chapter 4. Netpac with Kaye Hosts

4.2.11 Netpac Programs

When a host scan is initiated at standard intervals or triggered by a logic condition, use program Page 24 to initiate a
scan of Netpac modules. (See the Ten/60 User's Guide for information on program Pages.)

Note: The Ten/60 must have Kaye firmware revision 1.00 or later for Netpac operation.

Program Page 24 initiates a scan cycle of all Netpac modules.

Program Page 05 designates Netpac as the source of a datalogger channel as follows:

1. Enter a single channel or a group of channels as inactive (that is, not in use for data input). On the EU line, enter
EU 54 if the Netpac channel is the data source, EU 55 if the Netpac channel is a contact output channel
(acknowledge), or EU 56 for contact output (non-acknowledge). (EU's 54-56 are dedicated to Netpac.)

2. Address the Netpac channel in this format on the ASN line:

NET (Port, Module, Channel, EU, New or Old data) where:

NET Defines a Netpac channel; formula must be in

parentheses ( ).

Port Specifies the port based on the connector at the rear

of the interface card, J1 = 1, J2 = 2, J3 = 3

Module Defines the module number (0-15) set on the Netpac

DIP switches.

Channel Defines the Netpac channel as the data source or

the first channel of a group of channels. Limits are 0-

99.

EU Defines the engineering unit at the Netpac.

See Table 3-5 on page 12 for a list of EU's.

New or

Old

Enter an asterisk (*) if you want new data, or leave

blank if you want the data previously stored in

memory. Define the EU; and then define if you want

to return data residing in memory or initiate a new

scan of that particular channel. On the ASN line,

enter a formula that is similar to that used for

contacts.

Contact Outputs: When you program a contact output with the Ten/60, you can select either an acknowledged or

non-acknowledged contact (see Contact Output on page 26). A Netpac contact output card closes a contact as a result
of a measured value, calculated value, or a logic value.

Use program Page 05 to assign a single channel in the datalogger sequence, and then enter EU 55 to designate it as an
acknowledged contact output, or EU 56 as a non-acknowledged contact output.

On the ASN line, enter the address. Enter the remaining argument for the contact closure, first and last channel(s) and
limit(s), and close the parentheses.

76 Netpac® User’s Manual

Chapter 4. Netpac with Kaye Hosts

4.2.11 Netpac Programs (cont.)

Contact Outputs: (cont.)For example, if datalogger channel 74 is an acknowledged contact output located at port 2,

module 07, channel 3, and you want a contact closure whenever channel 40 exceeds limit 1 or limit 3, enter the
following on the ASN line:

NET (2, 7, 3, C40, C40, 1, 3)

With this program, whenever datalogger channel 40 exceeds limit 1 or 3 (C40 is the first and last channel), a contact is
closed at module 07, channel 3, and remains closed until acknowledged.

Local Contact Output, TB1: Program the local contact output at TB1 to either close or open using the same

protocol as standard contact outputs, program Page 05. Channel 99 is designated for this contact. For example, when
using a Ten/60, the following program actuates the contact whenever the value of limit 1 is exceeded:

CHANNEL 1, EU25, E(1.0), LIMITS (01/00/00/00)

CHANNEL 2, EU31, NETPAC LOC (1/00/99),
E(CON(C1 ,C1 ,L1))
LIMIT 1 = 1.5H

If TB1 is normally closed, it remains closed when channel 1 evaluates to less than 1.5 (L1 or the limit setting is greater
than 1.0 (Cl)).

If channel 1 evaluates to greater than 1.5, or the limit is reduced below the value of channel 1, the contact at TB1 is
activated, the normally closed contacts open, and the normally open contacts close.

If you also have a contact output card (designated as channel 99) installed in a Netpac multi-module, it operates in
parallel with the contact at TB1.

Linear Equations: To assign data from a Netpac module to a linear equation, use an inactive channel (that is, not in

use for data input) and a mathematical equation.

Assign EU 46 to the inactive channel. EU 46 converts the Netpac data according to the algebraic expression that you
define on program Page 16. On the ASN line, assign your expression name (II to WW) followed by your variables in
parentheses. Precede channel numbers with the letter C, and place numerical data in decimal fraction or scientific
notation.

You can use up to eight variables. For a linear equation, only two variables are typically used: the channel used for the
input and the multiplication factor. A third variable is the offset.

The following example is an MX + B equation:

ASN II(150,C001,-200)

The name of the expression (MX + B) that you define on program Page 16 is II. Netpac input data (X) is read at the
Ten/60 channel 001. Assume the input data is from a flow transducer where 2-10mV represents a flow rate of 100-1300
GPM.

Netpac® User’s Manual 77

Chapter 4. Netpac with Kaye Hosts

4.2.11 Netpac Programs (cont.)

Linear Equations:(cont.). The M value is the change in Y divided by the change in X. In this example, M is 150.

M = 1300–100/10–2 = 150

The B value is Y

– MX,. In this example, B is -200.

1

B = 100-150(2) = -200

Next, access channel 001 and designate it as the Netpac channel (X) by entering EU 54. Define the port (1), module (0),
channel (1), and Netpac EU (03) on the ASN line.

ASN NET(1,0,1,03,*)

Finally, access program Page 16 and enter the algebraic expression A*B+C (for MX + B).

The following example is for the math equation:

((C*B) t A) + D.

The expression name is VR. Channel 7 is variable A, channel 14 is variable B, 4.2 is variable C, and 10.0 is variable D.

VR (C7,C14,4.2,10.0)

Use program Page 16 to enter the expression name and define it as algebraic. On the definition line, enter how you
want the variables computed. If you want to multiply 4.2 times channel 14, add channel 7 to this number and divide by

10.

4.2.12 Logic Triggered Scans

Various methods of achieving logic-triggered scans are discussed in the Ten/60 User's Guide on program Page 18 and

19. These methods operate in the same manner for Netpac channels. The only difference is that the first and last

channels are designated for scanning when the trigger channel exceeds a preset limit. You can also designate them as
Netpac channels by using EU 54, 55, or 56 and entering the formula on the ASN line.

78 Netpac® User’s Manual

Appendix A. System Specifications

A.1 Netpac Models

Single Module: Open Style

NEMA 2
NEMA 4

Multi-Module: Open Style

NEMA 4
Rack Mount

A.2 Inputs

Voltage: ±55mV, ±100mV, ±1V, ±10V

Current: 0-1mA, 4-20mA, 10-50mA

Appendix A. System Specifications

Measurement Range Measurement Accuracy

55mV ±0.03% of input voltage

100mV ±0.03% of input voltage

1V ±0.03% of input voltage

10V ±0.03% of input voltage

0 to 1mA ±0.08% of input current

4 to 20mA ±0.08% of input current

10 to 50mA ±0.08% of input current

Thermocouples: J, K, T, R, S, E, B (includes cold junction compensation and linearization)

Netpac® User’s Manual 57

A.2 Inputs (cont.)

Appendix A. System Specifications

Thermocouple

Type

J –50 to 100 ±0.5 ±0.9

K

T

E –50 to 100 ±0.5 ±0.9

R, S 100 to 200 ±1.0 ±1.8

B 400 to 760 ±0.7 ±1.3

Measurement

Range (°C)

–200 to –150 ±0.7 ±1.3

–150 to –50 ±0.6 ±1.1

100 to 400 ±0.6 ±1.0

400 to 760 ±0.7 ±1.3

–200 to –150 ±0.7 ±1.3

–150 to –50 ±0.6 ±1.1

–50 to 100 ±0.5 ±0.9

100 to 400 ±0.6 ±1.1

400 to 760 ±0.7 ±1.3

760 to 1000 ±0.8 ±1.4

–200 to –150 ±0.7 ±1.3

–150 to –50 ±0.6 ±1.1

–50 to 100 ±0.5 ±0.9

100 to 400 ±0.6 ±1.1

–200 to –150 ±0.7 ±1.3

–150 to –50 ±0.6 ±1.1

100 to 400 ±0.6 ±1.1

400 to 760 ±0.7 ±1.3

0 to 100 ±1.2 ±2.2

100 to 1665 ±0.9 ±1.6

200 to 400 ±1.8 ±3.2

760 to 1800 ±0.6 ±1.1

Measurement Accuracy

°C °F

Dry Contact: Open, closed

Status: AC/DC

High Volts: 0 to ±150 VDC

Netpac® User’s Manual 58

Appendix A. System Specifications

A.2 Inputs (cont.)

RTD’s: 100W platinum (alpha 0.00385, 0.003925), 10W copper

The accuracy specifications apply at 25°C with relative humidity less than 95%, non-condensing, high
resolution.

100 W platinum RTD accuracy specifications:

Measurement

Range (°C)

–200 to 0 ±0.8 ±1.4 ±0.5 ±0.9 ±0.4 ±0.7

0 to 250 ±0.7 ±1.3 ±0.4 ±0.7 ±0.3 ±0.5
250 to 500 ±0.9 ±1.5 ±0.5 ±0.9 ±0.4 ±0.7
500 to 850 ±1.0 ±1.8 ±0.6 ±1.1 ±0.5 ±0.9

10 W copper RTD accuracy specifications:

Measurement

3-Wire Std.

Range

(°C)

°C °F

3-Wire Brg./Ch.

°C °F

3-Wire

Standard

°C °F

4-Wire

°C °F

3-Wire

Bridge/Ch.

°C °F

–50 to 50 ±5.0 ±9.0 ±0.5 ±0.9

50 to 150 ±5.1 ±9.2 ±0.5 ±0.9

Pulse Counting: 0-65,000 counts (only when host is Auto series, Ten/60, or installed software; oper­ates synchronously with Netpacs; not supported by KVIEW, Mini-KVIEW or THE FIX).

Frequency: 65 KHz max.
Period: 65 seconds max.

Range Code

Function

Frequency 01 0.1 Hz 0-6553.5 Hz 30 sec

Period

Contact

Status

Switch Resolution Range

10 1 Hz 0-65535 Hz 3 sec

00 0.01 Hz 0-655.35 Hz 300 sec

00 1ms 1-65535ms 3xperiod

01 0.1ms 0.1-6553.5 3xperiod

10 0.01ms 0.01-655.35 3xperiod

11 0.001ms

-- open/close open/close 1ms

0.001-65.535

Max. Time

to Measure

3xperiod

Total

Pulses

-- 1 count

0-65535

counts

1ms

Multiplexer: Photovoltaic, solid state, indefinite life

Netpac® User’s Manual 59

A.3 Outputs

Contact Out: 2A at 30 VDC, 0.6A at 125 VAC

Analog Out: Ranges of 0-5V, 0-10V, 1-5mA, 4-20mA

A4. Environmental

Temperature: 32° to 140°F (0° to 60°C)

Humidity: 0-95% non-condensing

Operating Altitude: 10,000 ft.

A5. Voltage Measurement

Resolution/Integration period (selectable by channel):

High 14 bits plus sign, 2 line cycles
Medium 13 bits plus sign, 1 line cycle
Low 11 bits plus sign, ¼ line cycle

Appendix A. System Specifications

Measurement Accuracy: ±(0.03% of input + 2 counts)

Normal Mode Rejection: 70-dB at 60 Hz ±0.01% at high resolution

Repeatability: 1 in 16,384 of span

Max. Normal Mode: ±250V peak

Common Mode Rejection:

2-Wire 3-Wire

@ 50/60 Hz 140dB 160dB

@ DC 120dB 150dB

Max. Common Mode

250V peak channel to channel within input card;
350V peak channel to ground, input card to input card

A6. Communications

Type: Two-wire serial with voltage levels conforming to EIA RS-485

Option: RS-232 to RS-422/485 interface converter

Baud Rates: 300, 1,200, 9,600, 19,200; user selectable

Protocol: ASCII, with checksum in ASCII for error detection

Max. Dist. from Host: Up to 16,000 ft. (5,000m)

Addressability: From 1 to 16 Netpacs on one port (single twinax line)

Netpac® User’s Manual A.3 Outputs 60

Appendix A. System Specifications

A.6.1 Maximum Channel Capacity - Single Port

Host Computer with RS-232/485
Converter: 1600 channels

Maximum Network Throughput:

125 channels/sec

A.6.2 Power Requirements

Input Power: 12 VDC, 24 VDC, 115 VAC or 230 VAC

DC Power Line
Variation: –10% to +17% of nominal input voltage

AC Power Surge Withstand:

Meets requirements of IEEE std. 472-1974 (ANSI C37.90a-1974); Surge withstand capability tests

Single and multi-modules with volts, currents, thermocouples, dry contact status, RTD’s, high volts or contact
output: 11W maximum for any number of channels

Pulse counting (10 channels) or analog output (5 channels): 14W

A.7 Diagnostics

Software self-diagnostics are run on power-up and during operation. Error indication is communicated to host
upon interrogation.

Status LED provides indication of system state.

A.8 Dimensions

Single Module:

Height Width Depth Weight

Open Style 3 1/4” 14 1/8” 11” 5 lbs 7 oz
NEMA 2 3 1/4” 15 1/4” 11 1/2” 10 lbs 15 oz
NEMA 4 20” 16” 6” 29 lbs

Multi-Module:

Height Width Depth Weight

NEMA 4 20” 16” 6” 29 lbs
Rack Mount 8 3/4” 19” 14 3/8” 18 lbs
Open Style 25” 16 5/8” 6 1/2” 14 lbs

Netpac® User’s Manual A6. Communications 61

Appendix A. System Specifications

A9. Input Conditioning Types for Digital Control Card

TTL/CMOS

Input low voltage >0.0 volt and <0.8 volt

Input high voltage >3.5 volts and <12.0 volts

Input voltage >–0.5 volts min. and <15.0 volts max.

Input resistance >3,000W

Input frequency <800 KHz

Input pulse width >625 nsec

A.9.1 Dry Contact

Input closed resistance <150W

Input open resistance >2,500W

Input frequency <10 Hz

Input pulse width >50 msec

Input Low pass cut-off freq. approx. 100 Hz

Input load resistance approx. 1,000W (shunt to +5 volts)

A.9.2 Isolated AC, 80 to 150 Volts

Input low voltage <3 volts

Input high voltage >80 volts

Input voltage <150 volts RMS

Input resistance >200 KW

Input frequency <1,000 Hz

Input pulse width >250 μ s

Isolation leakage current <1 μA at 3,000 VDC, 25°C, 45% RH

Netpac® User’s Manual A6. Communications 62

Appendix A. System Specifications

A.9.3 Isolated High Volts, 80 to 150 Volts

Input off voltage <15 volts

Input on voltage >80 volts

Input voltage <150 volts RMS

Input resistance >200 K W

Input frequency <10 KHz

Input pulse width >50 μ s

Conditioner OFF to ON propagation delay <1ms (0.7ms typical)

Conditioner ON to OFF propagation delay <10ms (7ms typical)

Isolation leakage current <1 μA at 3,000 VDC, 25°C, 45%RH

A.9.4 Low Level, 15m VAC

Input low voltage <–15 mV

Input high voltage >15 mV

Input voltage <10 volts RMS (max. over-voltage)

Input resistance >500 KW for input voltage <200 mV RMS

Input frequency <10 KHz

Input pulse width >50 μ s

Netpac® User’s Manual A6. Communications 63

Index

A

Analog Control Card . . . . . . . . . . . . . . . . . . . . . . 7, 19

Analog Output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Auto Family Dataloggers . . . . . . . . . . . . . . . . . . . . . 69

Operation Sequence . . . . . . . . . . . . . . . . . . . . . . . 70

Power-Up Sequence . . . . . . . . . . . . . . . . . . . . . . . 69

Autoscan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

B

Baud Rate

Jumper

Selection with Ten/60. . . . . . . . . . . . . . . . . . . . . . 71

Block Scan (B) Command . . . . . . . . . . . . . . . . . . . . 56

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22, 39

C

Cabling, System . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Cal/Zero/Therm/Block Meas. (Q) . . . . . . . . . . . . . . . 65

Checksum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Command Descriptions

A = Status

B = Block Scan . . . . . . . . . . . . . . . . . . . . . . . . . . 56

C = Contact Input Channel . . . . . . . . . . . . . . . . . . 57

D = Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

E = Engineering Unit . . . . . . . . . . . . . . . . . . . . . . 58

F0 or F1 = Degrees . . . . . . . . . . . . . . . . . . . . . . . 60

G = Go . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

H0 or H1 = Data Format. . . . . . . . . . . . . . . . . . . . 60

I = Interrogate . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

J = Thermal Block Measurement. . . . . . . . . . . . . . 63

K = Contact Assign . . . . . . . . . . . . . . . . . . . . . . . 63

M = Measured Data . . . . . . . . . . . . . . . . . . . . . . . 64

Q = Cal/Zero/Thermal/Block Meas. . . . . . . . . . . . 65

R = Resolution. . . . . . . . . . . . . . . . . . . . . . . . . . . 65

S = Scan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

T = Talk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

U = Untalk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

V = Value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

X = Contact Actuate. . . . . . . . . . . . . . . . . . . . . . . 67

Z = Zero . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Command Format . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Communications Specifications . . . . . . . . . . . . . . . . 82

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Connections

Host . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Contact

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Input

Output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Contact Actuate (X) Command. . . . . . . . . . . . . . . . . 67

Contact Assign (K) Command . . . . . . . . . . . . . . . . . 63

Contact Input Channel (C) Command . . . . . . . . . . . . 57

Converter, Interface . . . . . . . . . . . . . . . . . . . . . . . . . 45

Current

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Transmitters . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

D

Data (D) Command . . . . . . . . . . . . . . . . . . . . . . . . . 57

Data Format (H0) or (H1) Command . . . . . . . . . . . . 60

Dataloggers

Auto Family

Date of Publication . . . . . . . . . . . . . . . . . . . . . . . . . . i

Default Resolution Jumper. . . . . . . . . . . . . . . . . . . . 23

Degrees (F0) or (F1) Command . . . . . . . . . . . . . . . . 60

Diagnostic Error Accumulation . . . . . . . . . . . . . . . . 74

Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Digital Control Card . . . . . . . . . . . . . . . . . . . . . . 8, 38

Dip Switch S1 . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Input Conditioning Types . . . . . . . . . . . . . . . . . . . 84

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Dip Switch S1

Analog Control Card

Digital Control Card. . . . . . . . . . . . . . . . . . . . . . . 39

Document Number . . . . . . . . . . . . . . . . . . . . . . . . . . i

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

. . . . . . . . . . . . . . . . . . . . . . 20

E

Engineering Unit (E) Command . . . . . . . . . . . . . . . . 58

Environmental Specifications. . . . . . . . . . . . . . . . . . 82

Error

Accumulation

Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

External Power Supply . . . . . . . . . . . . . . . . . . . . . . 73

. . . . . . . . . . . . . . . . . . . . . . . . . . . 74

G

Go (G) Command . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Netpac® User’s Manual 87

Index

I

I/O Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40, 47

Input Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 79

Interface Converter . . . . . . . . . . . . . . . . . . . . . . . . . 45

Internal Power Supply . . . . . . . . . . . . . . . . . . . . . . . 73

Interrogate (I) Command . . . . . . . . . . . . . . . . . . . . . 62

J

Jumper

Baud Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Default Resolution . . . . . . . . . . . . . . . . . . . . . . . . 23

L

Logic Triggered Scans . . . . . . . . . . . . . . . . . . . . . . . 78

M

Measured Data (M) Command . . . . . . . . . . . . . . . . . 64

Module

Configurations

Mounting Multi- . . . . . . . . . . . . . . . . . . . . . . . . . 12

Mounting Single . . . . . . . . . . . . . . . . . . . . . . . . . . 9

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

N

Netpac

Auto Family Datalogers

Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Programs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Used with Ten/60. . . . . . . . . . . . . . . . . . . . . . . . . 70

. . . . . . . . . . . . . . . . . . . . 69

O

Operation Sequence. . . . . . . . . . . . . . . . . . . . . . 70, 75

Output Specifications. . . . . . . . . . . . . . . . . . . . . . . . 82

P

Power

Connections

Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Selection with Ten/60. . . . . . . . . . . . . . . . . . . . . . 72

Power Supply

External . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Internal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Power-Up Sequence. . . . . . . . . . . . . . . . . . . . . . . . . 69

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Response Messages . . . . . . . . . . . . . . . . . . . . . . . . . 49

Return Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

RTD’s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30, 81

S

Scan (S) Command . . . . . . . . . . . . . . . . . . . . . . . . . 66

Scans, Logic Triggered . . . . . . . . . . . . . . . . . . . . . . 78

Status (A) Command . . . . . . . . . . . . . . . . . . . . . . . . 56

System Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

T

Talk (T) Command . . . . . . . . . . . . . . . . . . . . . . . . . 66

Ten/60, Used with Netpac . . . . . . . . . . . . . . . . . . . . 70

Thermal Block Measurement (J) Command. . . . . . . . 63

Thermocouples . . . . . . . . . . . . . . . . . . . . . . . . . 28, 79

Transmission Errors. . . . . . . . . . . . . . . . . . . . . . . . . 53

Transmitters, Current. . . . . . . . . . . . . . . . . . . . . . . . 33

U

Untalk (U) Command . . . . . . . . . . . . . . . . . . . . . . . 67

V

Value (V) Command . . . . . . . . . . . . . . . . . . . . . . . . 67

Voltage

AC - Inductive Load

Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

DC - Inductive Load . . . . . . . . . . . . . . . . . . . . . . 36

High Input. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Specifications . . . . . . . . . . . . . . . . . . . . . . . . 79, 82

. . . . . . . . . . . . . . . . . . . . . . 36

W

Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Z

Zero (Z) Command . . . . . . . . . . . . . . . . . . . . . . . . . 68

R

Resolution (R) Command. . . . . . . . . . . . . . . . . . . . . 65

88 Netpac® User’s Manual

Warranty

Warranty

Each instrument manufactured by Kaye is warranted to be free from defects in material and workmanship. Liability
under this warranty is limited to restoring the instrument to normal operation or replacing the instrument, at the sole
discretion of Kaye. Fuses and batteries are specifically excluded from any liability. This warranty is effective from the
date of delivery to the original purchaser. If Kaye determines that the equipment was defective, the warranty period is:

• one year from delivery for electronic or mechanical failures

• one year from delivery for sensor shelf life

If Kaye determines that the equipment was damaged by misuse, improper installation, the use of unauthorized
replacement parts, or operating conditions outside the guidelines specified by Kaye, the repairs are not covered under
this warranty.

The warranties set forth herein are exclusive and are in lieu of all other warranties whether

statutory, express or implied (including warranties or merchantability and fitness for a

particular purpose, and warranties arising from course of dealing or usage or trade).

Return Policy

If a Kaye instrument malfunctions within the warranty period, the following procedure must be completed:

1. Notify Kaye, giving full details of the problem, and provide the model number and serial number of the instrument.
If the nature of the problem indicates the need for factory service, Kaye will issue a RETURN AUTHORIZATION
NUMBER (RAN), and shipping instructions for the return of the instrument to a service center will be provided.

2. If Kaye instructs you to send your instrument to a service center, it must be shipped prepaid to the authorized repair
station indicated in the shipping instructions.

3. Upon receipt, Kaye will evaluate the instrument to determine the cause of the malfunction.

Then, one of the following courses of action will then be taken:

• If the damage is covered under the terms of the warranty, the instrument will be repaired at no cost to the owner and

returned.

• If Kaye determines that the damage is not covered under the terms of the warranty, or if the warranty has expired,

an estimate for the cost of the repairs at standard rates will be provided. Upon receipt of the owner’s approval to
proceed, the instrument will be repaired and returned.

Netpac® User’s Manual 89

Warranty

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90 Netpac® User’s Manual

A

Customer Support Centers

U.S. A.
Sales and Services
(Repair/Calibration):

Amphenol Thermometrics, Inc.
St Marys Center
967 Windfall Road
St Marys, Pennsylvania 15857
U.S.A.
T: 814-834-9140
F: 814-781-7969

Europe, Asia and Middle East
Sales and Service:

Amphenol Advanced Sensors GmbH
Sinsheimer Strasse 6
D-75179 Pforzheim
Germany
T: [phone]
F: [phone]

Brazil
Sales and Service

Amphenol TFC DO Brazil LTDA
Rodovia Governador Adhemar
Pereira de Barros KM 121,5 S/N
13098-396 Campinas
Sao Paulo, Brazil

U.S.A.
Technical Support:

Amphenol Thermometrics, Inc.
St Marys Center
967 Windfall Road
St Marys, Pennsylvania 15857
U.S.A .
T: 814-834-9140
F: 814-781-7969

China:

Amphenol (Changzhou)
Connector Systems
305 Room, 5D
Jintong Industrial Park
Wujin, Changzhou, Jiangsu, China
T:[phone] ext. 50087
F:[phone]

mphenol

Advanced Sensors

www.amphenol-sensors.com

©2014 Amphenol Thermometrics, Inc. All rights reserved.

Technical content subject to change without notice.

M4402-4 Rev. C