ADLINK ND-6021 User Manual

ND-6021 & ND-6024

Analog Input Modules

User’s Guide

©Copyright 1996~2001 ADLINK Technology Inc.

All Rights Reserved.

Manual Rev. 4.00: June 5,2001

The information in this document is subject to change without prior notice in
order to improve reliability, design and function and does not represent a
commitment on the part of the manufacturer.

In no event will the manufacturer be liable to direct, indirect, special, incidental,
or consequential damages arising out of the use or inability to use the product
or documentation, even if advised of the possibility of such damages.

This document contains proprietary information protected by copyright. All
rights are reserved. No part of this manual may be reproduced by any
mechanical, electronic, or other means in any form without prior written
permission of the manufacturer.

Trademarks

NuDAM

Other product names mentioned herein are used for identification purposes
only and may be trademarks and/or registered trademarks of their respective
companies.

is registered trademarks of ADLINK Technology Inc.,

Table of Contents

Chapter 1 Introduction .......................................................1

1.1 About the NuDAM Analog Output Modules ............................. 1

1.2 Overview of NuDAM-6021 ....................................................... 2

1.3 Overview of NuDAM-6024 ....................................................... 7

Chapter 2 Initialization & Installation ..............................12

2.1 Software Installation............................................................... 12

2.2 Initializing a Brand-New Module............................................. 13

2.3 Install a New NuDAM to a Existing Network .......................... 15

2.4 Application Wiring for NuDAM-6021 ......................................16

2.5 Application Wiring for NuDAM-6024 ......................................17

Chapter 3 Command Set .................................................. 18

3.1 Command and Response ...................................................... 18

3.2 Summary of Command Set.................................................... 21

3.2. Set Configuration.................................................................... 23

3.3 Read Configuration ................................................................26

3.4 Read Module Name ...............................................................27

3.5 Read Firmware Version.......................................................... 28

3.6 Reset Status........................................................................... 29

3.7 Synchronized Sampling (6024 only) ......................................30

3.8 Read Synchronized Data (6024 only) .................................... 31

3.9 Digital Input (6024 only) .........................................................32

3.10 Analog Data Output................................................................ 33

3.11 4mA Offset Calibration ........................................................... 35

3.12 20mA Calibration.................................................................... 36

3.13 Trim Calibration ...................................................................... 37

3.14 Save Power On Analog Output Value.................................... 38

3.15 Last Value Readback ............................................................. 39

3.16 Current Readback .................................................................. 40

3.17 Read....................................................................................... 41

3.18 Change Leading Code Setting ............................................... 43

3.19 Set Host Watchdog Timer & Safety Value ............................. 45

3.20 Read Host Watchdog Timer & Safety Value.......................... 48

3.21 Host is OK .............................................................................. 50

Table of Contents • i

Chapter 4 Data Format .....................................................51

4.1 Unit Conversion...................................................................... 51

4.2 Engineering Units................................................................... 52

4.3 Percent of FSR....................................................................... 53

4.4 Hexdecimal Format ................................................................ 54

4.5 Summary of Data Format....................................................... 55

Chapter 5 Analog Output Calibration.............................. 56

5.1 Calibration .............................................................................. 56

5.2 Analog Output Module Calibration ......................................... 56

Product Warranty/Service ...... Error! Bookmark not defined.

ii • Table of Contents

1

Introduction

1.1 About the NuDAM Analog Output Modules

The NuDAM provides an analog output modules which can convert the digital
command to analog. The basic features of each module are shown here.

• NuDAM-6021 : analog signal output module with safety functions

• NuDAM-6024 : 4 channel analog output module

Introduction • 1

1.2 Overview of NuDAM-6021

What is NuDAM-6021 ?

ND-6021 is an analog signal output module. It receives the digital command
from host computer through RS-485 network. The format of the digital value
can be engineering units, hexdecimal format or percentage of full-scale
range(FSR). A microprocessor is used to convert the digital command to
digital value to send to DAC. The DAC converts the digital value into analog
form. The analog output can be either voltage or current output.

The ND-6021 is designed for safety. It provides many safety functions such as
isolation, watchdog, and power on safe value. The opto-isolators provide
5000Vrms isolation voltage to isolate the digital section and the remote
controlled analog equipments. The damage of power surges is avoided.

Another safety fucntion is the watchdog. Whenever the host is loss contact with
the remoted NuDAM module, or the micro-processor is down, the module will
reset itself and send the safety value to the analog output therefore the industry
safety is guarantee. The safety value / power-up value can be set by
configuration software.

The analog output can be readback through the module‘s ADC. which can
monitor the ’real‘ output of the device. The host can check the digital command
and the real output to avoid short circuits. The slew rate of the output signal is
also controllable by software.

Features of NuDAM-6021

• One uni-polar analog output channel

• Two sets of differential current and voltage output terminals

• Versatile digital signal format

• Programmable host watchdog timer for host failure protection

• Internal watchdog timer for device failure protection

• Easy programming by software

• Easy installation and wiring

2 • Introduction

Specifications of NuDAM-6021

Interface

♦

• Interface : RS-485, 2 wires

• Speed (bps) : 1200, 2400, 4800, 9600, 19.2K, 38.4K

Analog Output

♦

• Singal Output type: Differential type

• Resolution: 12 bits

• Accuracy: ±0.1% of FSR for current output

±0.2% of FSR for voltage output

• Unit Convertion: V or mA

• Output range: Voltage output: 0 to 10 V (uni-polar)

Current output: 0 to 20 mA,4 to 20 mA

• Maximum Sampling Rate: 100 samples /sec

• Slew rate: Voltage output: 0.0625 to 64 V/sec

Current output: 0.125 to 128 mA/sec

• Internal Current Load Resistor: 500Ω (%1)

Readback Analog Input

♦

• Accuracy: ±0.2% of FSR

Isolation

♦

• Isolation voltage: 5000 Vrms

Watchdog Function

♦

• Module internal watchdog timer : 150 ms

• Power failure threshold : 4.65 V

• Host programmable watchdog : 100 ms ~ 25.500 sec

Introduction • 3

Power

♦

• Power supply : +10V to +30V

• Power consumption : 1.0W

Pin Definitions of ND-6021

Pin # Signal Name Description

1 +IOUT Positive Current Output Terminal

2 -IOUT Negative Current OutputTerminal

3 +VOUT Positive Voltage Output Terminal

4 -VOUT Negative Voltage Output Terminal

6 Default* Initial state setting

7 (Y) DATA+ RS-485 series signal, positive

8 (G) DATA- RS-485 series signal, negative

9 (R) +Vs Power supply, +10V~+30V

10 (B) GND Ground

4 • Introduction

A Look at ND-6021 & Pin Assignment

20

Analog Output

ND-6021

Code Output R ange

30

31

32

(Current/Voltage)

0 ~20 mA

4 ~ 20 mA

0 ~ 10V

1

+VOUT

-IOUT

+IOUT

-VOUT

DEFAULT*

(Y)DATA+

(G)DATA-

11

10

(R)+Vs

(B)GND

Introduction • 5

Functional Block Diagram of ND-6021

Data+

RS-485

Rec/DRv

Data-

RS-485

Terminator

Watchdog / Power Failure

Supervisor

+10V ~ +30 V

GND

EEPROM

Power

Regulator

Micro

Processor

+5V

GND

DC to DC
Convertor

Photo
Isolators

*Defalut Setting
(1 bit Digital In)

DAC

(12 bits)

Voltage Output

V to I

Current Output

Isolated Power

Isolated Ground

VOUT +
VOUT -

IOUT +

IOUT -

6 • Introduction

1.3 Overview of NuDAM-6024

What is NuDAM-6024 ?

ND-6024 is a 4 channel bipolar analog signal output module. It receives the
digital command from host computer through RS-485 network. A
microprocessor is used to convert the digital command to digital value to send
to DAC. The DAC converts the digital value into analog form.

The ND-6024 is designed for safety. It provides many safety functions such as
isolation, watchdog, and power on safe value. The opto-isolators provide
5000Vrms isolation voltage to isolate the digital section and the remote
controlled analog equipments. The damage of power surges is avoided.

Another safety fucntion is the watchdog. Whenever the host is loss contact
with the remoted NuDAM module, or the micro-processor is down, the module
will reset itself and send the safety value to the analog output therefore the
industry safety is guarantee. The safety value / power-up value can be set by
configuration software.

Features of NuDAM-6024

• 4 channel bipolar analog output

• Programmable host watchdog timer for host failure protection

• Internal watchdog timer for device failure protection

• Easy programming by software

• Easy installation and wiring

Specifications of NuDAM-6024

Interface

♦

• Interface : RS-485, 2 wires

• Speed (bps) : 1200, 2400, 4800, 9600, 19.2K, 38.4K

Analog Output

♦

• Channel numbers : 4

• Singal Output type: Differential output

Introduction • 7

Voltage Output: ±10V

♦

• Resolution: 12-bit resolution

• Accuracy: ±1/2 LSB

• Gain Drift: ±5ppm/°C

Digital Input

♦

• Channel numbers : 7

• Logical level 0: +2V max.

Logical Level 1: +3.5V ~ +30V

Isolation

♦

• Isolation voltage: 5000 Vrms

Watchdog Function

♦

• Module internal watchdog timer : 150 ms

• Power failure threshold : 4.65 V

• Host programmable watchdog : 100 ms ~ 25.500 sec

Power

♦

• Power supply : +10V to +30V

• Power consumption : 2.5W

8 • Introduction

Pin Definitions of ND-6024

Pin # Signal Name Description

1 DI4 Digital input channel 4

2 DI3 Digital input channel 3

3 DI2 Digital input channel 2

4 DI1 Digital input channel 1

5 DI0 Digital input channel 0

6 Default* Initial state setting

7 (Y) DATA+ RS-485 series signal, positive

8 (G) DATA- RS-485 series signal, negative

9 (R) +Vs Power supply, +10V~+30V

10 (B) GND Ground

11 VOUTA+ Positive Voltage Output A Terminal

12 AGND Negative Voltage Output A Terminal

13 VOUTB+ Positive Voltage Output B Terminal

14 BGND Negative Voltage Output B Terminal

15 VOUTC+ Positive Voltage Output C Terminal

16 CGND Negative Voltage Output C Terminal

17 VOUTD+ Positive Voltage Output D Terminal

18 DGND Negative Voltage Output D Terminal

19 DI6 Digital input channel 6

20 DI5 Digital input channel 5

Introduction • 9

A Look at ND-6024 & Pin Assignment

DI5

DI6

DGND

VOU TD+

ND-6024 4-CH

Code Signal
33

CGND

VOU TC+

BGND

VOU TB +

Analog Output

10V

±

AGND

VOU TA+

10 • Introduction

DI4

DI3

DI2

DI1

DI0

DEFAULT*

(Y)DATA+

(G)DATA-

(R)+Vs

(B)GND

Functional Block Diagram of ND-6024

Data+

RS-485

Rec/DRv

Data-

RS-485

Terminator

Watchdog / Power Failure

Supervisor

+10V ~ +30 V

GND

EEPROM

Power

Regulator

Micro

Processor

+5V

GND

DC to DC
Convertor

Photo
Isolators

*Defalut Setting
(1 bit Digital In)

DAC

(12 bits)

DIØ…… DI6

Voltage Outpu t

Isolated Pow er

Isolated Grou nd

•VOUTA+
AGND

•VOUTB+
BGND

•VOUTC+
CGND

•VOUTD+
DGND

Introduction • 11

2

Initialization & Installation

2.1 Software Installation

1. If you have already installed “NuDAM Administration” then skip other
steps.

2. Backup your software diskette.

3. Insert “NuDAM Administration” diskette into floppy drive A:

4. Change drive to A:

5. Installation command syntax

INSTALL drive:

drive name is C to Z.

Example 1 : install to drive C:

A:\>

Example 2 : install to drive F:

A:\>

6. NuDAM Administration Utility will be installed in the directory C:\NUDAM

12 • Initialization & Installation

INSTALL C:

INSTALL F:

2.2 Initializing a Brand-New Module

Objective of Initializing a Brand-New NuDAM

All NuDAM modules, except NuDAM-6520 and NuDAM-6510, in a RS-485
network must have an unique address ID. Every brand-new NuDAM has a
factory default setting as following:

• Address ID is 01

• Baud rate is 9600 bps

• Check-sum disable

• Host Watchdog timer is disable

Therefore, to configure the brand-new NuDAM before using is necessary to
avoid conflicting address. The baud rate may also be changed according to
user‘s requirements.

The initialization procedures of a brand-new NuDAM are shown in the following
sections.

Default State

The NuDAM modules must be set at Default State when you want to change the
default settings, including the ID address, baud rate, check-sum status etc. All
NuDAM modules have an special pin labeled as
be in Default State if the
Under this state, the default configuration is set as following:

DEFAULT*

pin is shorted to ground when power ON.

DEFAULT*

. The module will

• Address ID is 00

• Baud rate is 9600 bps

• Check-sum disable

• Watchdog timer is disable

Therefore, the configuration of the host and the module can be easily set
identically and initializing a module will be possible no matter what configuration
is set under operating state.

Initialization Equipments

• Host computer with an RS-232 port

• An installed RS-485 module (NuDAM-6520) with 9600 baud rate

• The brand new NuDAM module

Initialization & Installation • 13

• Power supply (+10 to +30 VDC) for NuDAM modules

• Administrating utility software

Initialization Procedure

1. Power off the host computer and the installed NuDAM-6520. Be sure of
the baud rate of the NuDAM-6520 is 9600 bps.

2. Connect a brand new NuDAM module with the RS-485. Set the module
in Default State by shorting the
detailed wiring.

3. Power on the host computer.

4. Power on the power supply for NuDAM modules.

5. Use the NuDAM Administrating utility to configure the address ID, Baud
rate and check-sum status of the module.

Initialization Wiring

DEFAULT*

pin. Refer to Figure 2.1 for

Host

Computer

RS-232

Local Power Supply

+10 V to +30 V

+Vs GND

Figure 2-1 Layout for Initialization the NuDAM module

14 • Initialization & Installation

NuDAM-6520
RS-232/RS-485
Converter

DATA +
DATA -

+Vs GND

New
NuDAM
module

DATA+
DATA ­ Default*

+Vs GND