HMS 4RO, 6RTD, 8DIO, DAIO, 8AIV User Manual

Netbiter®IO Extender

4RO | 6RTD | 8DIO | DAIO | 8AIV | 8AIIS

USER MANUAL

HMSI-27-228 3.1 ENGLISH

Important User Information

Liability

Every care has been taken in the preparation of this document. Please inform HMS Industrial Networks AB of any
inaccuracies or omissions. The data and illustrations found in this document are not binding. We, HMS Industrial
Networks AB, reserve the right to modify our products in line with our policy of continuous product development.
The information in this document is subject to change without notice and should not be considered as a commit­ment by HMS Industrial Networks AB. HMS Industrial Networks AB assumes no responsibility for any errors that
may appear in this document.

There are many applications of this product. Those responsible for the use of this device must ensure that all the
necessary steps have been taken to verify that the applications meet all performance and safety requirements in­cluding any applicable laws, regulations, codes, and standards.

HMS Industrial Networks AB will under no circumstances assume liability or responsibility for any problems that
may arise as a result from the use of undocumented features, timing, or functional side effects found outside the
documented scope of this product. The effects caused by any direct or indirect use of such aspects of the product
are undefined, and may include e.g. compatibility issues and stability issues.

The examples and illustrations in this document are included solely for illustrative purposes. Because of the many
variables and requirements associated with any particular implementation, HMS Industrial Networks AB cannot as­sume responsibility for actual use based on these examples and illustrations.

Intellectual Property Rights

HMS Industrial Networks AB has intellectual property rights relating to technology embodied in the product de­scribed in this document. These intellectual property rights may include patents and pending patent applications in
the USA and other countries.

eWON

®

, Netbiter®, and Netbiter Argos®are registered trademarks of HMS Industrial Networks AB. All other trade-

marks mentioned in this document are the property of their respective holders.

Netbiter®IO Extender User Manual HMSI-27-228 3.1

Netbiter®IO Extender User Manual HMSI-27-228 3.1

Table of Contents

Page

1 Preface ............................................................................................................................... 3

1.1 About This Document .....................................................................................................3

1.2 Document history...........................................................................................................3

1.3 Document Conventions ..................................................................................................4

2 Overview............................................................................................................................ 5

2.1 Introduction ...................................................................................................................5

2.2 Data acquisition .............................................................................................................5

2.3 Selection Guide .............................................................................................................5

3 General/Common Characteristics .............................................................................. 6

3.1 Dimensions ...................................................................................................................6

3.2 Common Specifications ..................................................................................................6

3.3 EMC Considerations ......................................................................................................7

3.4 Network Termination ......................................................................................................7

3.5 DIP Switches.................................................................................................................7

3.6 Modbus Node ID Setting.................................................................................................8

3.7 Communication Settings.................................................................................................9

4 IOX-4RO – Relay Outputs............................................................................................ 10

4.1 Description ..................................................................................................................10

4.2 Technical Specifications ............................................................................................... 10

4.3 Status Indicators.......................................................................................................... 10

4.4 Wiring ......................................................................................................................... 11

4.5 DIP Switch Settings...................................................................................................... 12

4.6 Data Registers............................................................................................................. 12

5 IOX-6RTD – RTD Inputs ...............................................................................................13

5.1 Description ..................................................................................................................13

5.2 Technical Specifications ............................................................................................... 13

5.3 Wiring ......................................................................................................................... 14

5.4 Status Indicators.......................................................................................................... 15

5.5 DIP Switch Settings...................................................................................................... 15

5.6 Data Registers............................................................................................................. 16

Netbiter®IO Extender User Manual HMSI-27-228 3.1

Table of Contents

6 IOX-8DIO – Digital Inputs/Outputs............................................................................ 17

6.1 Description ..................................................................................................................17

6.2 Technical Specifications ............................................................................................... 17

6.3 Wiring ......................................................................................................................... 18

6.4 Status Indicators.......................................................................................................... 19

6.5 DIP Switch Settings...................................................................................................... 19

6.6 Jumper Settings...........................................................................................................20

6.7 Data Registers ............................................................................................................ 21

7 IOX-DAIO – Digital and Analog Inputs/Outputs.....................................................23

7.1 Description ..................................................................................................................23

7.2 Technical Specifications ............................................................................................... 25

7.3 Status Indicators.......................................................................................................... 26

7.4 Wiring ......................................................................................................................... 27

7.5 DIP Switch Settings...................................................................................................... 27

7.6 Jumper Settings...........................................................................................................28

7.7 Data Registers............................................................................................................. 29

8 IOX-8AIV – Analog Voltage Inputs ............................................................................ 30

8.1 Description ..................................................................................................................30

8.2 Technical Specifications ............................................................................................... 30

8.3 Status Indicators.......................................................................................................... 30

8.4 Wiring ......................................................................................................................... 31

8.5 DIP Switch Settings...................................................................................................... 32

8.6 Data Registers............................................................................................................. 32

9 IOX-8AIIS – Isolated Analog Current Inputs...........................................................34

9.1 Description ..................................................................................................................34

9.2 Technical Specifications ............................................................................................... 34

9.3 Status Indicators.......................................................................................................... 34

9.4 Wiring ......................................................................................................................... 35

9.5 DIP Switch Settings...................................................................................................... 36

9.6 Data Registers............................................................................................................. 36

A Regulatory Compliance ...............................................................................................39

Preface 3 (40)

1 Preface

1.1 About This Document

This manual describes how to install and configure Netbiter IO Extender modules.

For additional documentation and software downloads, FAQs, troubleshooting guides and tech­nical support, please visit www.netbiter.com/support.

1.2 Document history

Version Date Description

2.00 Sep 2015 Multiple corrections and updates, new layout

3.0 2016-10-11 Rebranded and updated compliance info

3.1 2017-10-25 Minor corrections

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Preface 4 (40)

1.3 Document Conventions

Ordered lists are used for instructions that must be carried out in sequence:

1. First do this

2. Then do this

Unordered (bulleted) lists are used for:

• Itemized information

• Instructions that can be carried out in any order

...and for action-result type instructions:

► This action...

➨ leads to this result

Bold typeface indicates interactive parts such as connectors and switches on the hardware, or
menus and buttons in a graphical user interface.

Monospaced text is used to indicate program code and other
kinds of data input/output such as configuration scripts.

This is a cross-reference within this document: Document Conventions, p. 4

This is an external link (URL): www.hms-networks.com

This is additional information which may facilitate installation and/or operation.

This instruction must be followed to avoid a risk of reduced functionality and/or
damage to the equipment, or to avoid a network security risk.

Caution

This instruction must be followed to avoid a risk of personal injury.

WARNING

This instruction must be followed to avoid a risk of death or serious injury.

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Overview 5 (40)

2 Overview

2.1 Introduction

The Netbiter I/O Extender series provides a solution for distributed I/O requirements. The I/O
system consists of stand-alone digital and analog input/output modules connected together on
a RS-485 two-wire multi-drop network.

The modules communicate using the Modbus RTU protocol. The 32-bit ARM CPU in the mod­ule provides high speed data processing and fast communication turnaround times. Multiple
baud rates are selectable, from 2400 to 115200 baud.

All I/O modules fit directly onto an industry standard DIN rail. All modules have a minimum isola­tion of 1000 VAC rms between the field and logic.

The modules are equipped with status LEDs to indicate the status of the inputs and outputs.
This visual indication assists with fault finding and diagnostics.

2.2 Data acquisition

The primary use of the Netbiter I/O Extender modules is for data acquisition in combination with
a Netbiter EC or WS gateway. The Netbiter gateway acts as a Modbus master which retrieves
and sends data from the Netbiter I/O Extender modules.

120 Ω

Termination

120 Ω

Termination

RS-485 network

Netbiter EC or WS
(Modbus Master)

Netbiter IOX Extenders (Modbus Slaves)

QUERY

REPLY

Fig. 1 Overview

2.3 Selection Guide

Module Type

IOX-4RO 4 relay outputs

IOX-8DIO 8 digital inputs / 8 digital outputs

IOX-6RTD 6 RTD inputs – PT100, Ni120, PT1000, Ni1000, Ni1000LG & Ohms

IOX-DAIO 2 RTD inputs, 2 analog inputs 0(4)-20mA or 0(2)-10V

1 analog output 0(4)-20mA or 0(2)-10V
4 digital inputs, 2 digital outputs

IOX-8AIV 8 analog inputs, 0(2)-10V

IOX-8AIIS 8 fully isolated analog inputs, 0(4)-20mA

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General/Common Characteristics 6 (40)

3 General/Common Characteristics

3.1 Dimensions

• The module clips directly onto an industry standard DIN rail (EN 50022).

• Field wiring is on the front of the module via a plug-in connector.

• Module power and RS-485 communications wiring are on a separate plug-in connector on
the bottom side of the housing.

• Allow at least 25 mm in front of and below the module to accommodate the wiring.

• Ensure that the space above and below the module is sufficient to provide adequate
ventilation.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

1

1C

1NC

2NC

2C

2NC

2NC

3C

3NC

3NC

4C

4NC

4NC

P R T

1234

Fig. 2 Netbiter I/O Extender enclosure

3.2 Common Specifications

Operating temperature -10 °C to +50 °C

Storage temperature -40 °C to +85 °C

Humidity 5–95 % RH, non-condensing

This product contains parts that can be damaged by electrostatic discharge (ESD).
Use ESD protective measures to avoid equipment damage.

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General/Common Characteristics 7 (40)

3.3 EMC Considerations

The I/O modules will usually be installed in an enclosure along with other devices that generate
electromagnetic radiation, such as relays and contactors, transformers, motor controllers, etc.
Electromagnetic radiation can induce electrical noise in both power and signal lines. Direct radi­ation into the module can also have a negative effect on the system.

Appropriate grounding, shielding and other protective steps should be taken at the installation
stage to prevent interference. Protective steps include control cabinet grounding, module
grounding, cable shield grounding, protective elements for electromagnetic switching devices,
correct wiring, as well as the consideration of cable types and their cross sections.

• Use screened twisted pair RS-485 cable with the screen grounded at one point.

• Use screened I/O, T/C, and RTD cables, with the screens grounded at one point as close
as possible to the I/O module.

3.4 Network Termination

Transmission line effects often present a problem on data communication networks. These
problems include reflections and signal attenuation.

If it should be necessary to eliminate reflections from the ends of the cable, the cable can be ter­minated with a resistor across the line equal to its characteristic impedance. Both ends should
be terminated, as propagation is bi-directional. In the case of an RS-485 twisted pair cable, this
termination is typically 120 Ohms.

3.5 DIP Switches

1ON2 3 4 5 6 7 8 9 0

Fig. 3 DIP switches

DIP Switch Functions

Switch Function

1–7 Modbus Node ID

See Modbus Node ID Setting, p. 8

8

Module specific settings.

9

0 Baud rate: OFF = 9600, ON = programmed

See Communication Settings, p. 9

The status of the DIP switches is stored in register 30100.

MSB DIP Switch Status Register LSB

Address

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

32768 16384 8192 4096 2048 1024 512 256 128 64 32 16 8 4 2 1 30100

— — — — — —

0 9 8 7 6 5 4 3 2 1

DIP Switches

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General/Common Characteristics 8 (40)

3.6 Modbus Node ID Setting

Switches 1 to 7 are used to set the Modbus Node ID as shown in this table.

All modules will respond to a default Node ID of 254.

Fig. 4 Node ID DIP switch chart

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General/Common Characteristics 9 (40)

3.7 Communication Settings

The data in the modules is stored in 16-bit registers. These registers are accessed over the net­work using the Modbus RTU communication protocol.

DIP Switch 0 setting OFF (Default) ON (Programmed Baud Setting)

Baud rate 9600 2400, 4800, 9600, 19200, 38400, 57600, 115200

Data bits 8 8

Parity None None, Even, Odd

Stop bits 1 1, 2

3.7.1 Communication Settings Registers

Modbus
Register

Register
Name

Low
Limit

High
Limit

Ac­cess

Comments

40121 Baud Rate 2400 11520 R/W 2400, 4800, 9600, 19200, 38400,57600,11520

40122 Parity 0 2 R/W 0 = none, 1 = even, 2 = odd

40123 Stop Bits 1 2 R/W 1 = 1 stop bit, 2 = 2 stop bits

40124 Reply Delay 0 65535 R/W (x10ms)

The baud rate value is programmed directly into the baud rate register. The only exception is
the 115200 baud rate, where the value 11520 is used.

The reply delay is a time delay between the Modbus message being received to the reply being
sent. In some applications where a modem or radio is used in the RS-485 network, it may be
necessary to add a reply delay due to turnaround delays in the equipment.

Time (x 10 ms)

Rx Query

Tx Reply

Reply Delay

Fig. 5 Reply delay

Reply delay works only when DIP switch 0 is set to ON.

3.7.2 Supported Modbus Functions

Function Code Modbus Function Comment

1 Read Coil Status Digital inputs/outputs

2 Read Input Status Digital inputs/outputs

3 Read Holding Registers Analog inputs/outputs

4 Read Input Registers Analog inputs/outputs

5

Write Single Coil Digital outputs

6 Write Single Register Analog outputs

15 Write Multiple Coils Digital outputs

16 Write Multiple Registers Analog outputs

The Modbus message length must be limited to 100 consecutive read or write registers. If more
registers are required, a new poll group must be added.

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IOX-4RO – Relay Outputs 10 (40)

4 IOX-4RO – Relay Outputs

4.1 Description

The IOX-4RO module has 4 normally open/closed relay outputs. This module may be used for
a higher drive capability, or when isolation between outputs is required.

When switch 9 is OFF, the module is configured as a Modbus slave and the outputs are written
to by the Modbus master (PC/PLC/HMI). Each output on the module can be individually
switched ON or OFF, or all outputs can be set up at the same time by writing a single number to
the output register that represents the status of all outputs.

An output watchdog timer can be configured to switch off all outputs if there has been no com­munication with the module for up to 255 seconds. A value of 0 seconds will disable this timer
and the outputs will remain in the last programmed state.

4.2 Technical Specifications

Power supply Logic supply voltage 24 VDC

Logic supply current 42 mA

Relay outputs Output points 4

Maximum current 0.5 A @ 220 VAC / 1 A @ 28 VDC

Isolation 1000 Vrms between field and logic

1000 Vrms between outputs

Temperature Operating temperature. -10 °C to + 50 °C

Storage temperature -40 °C to + 85 °C

Connectors Logic power and comms. 4-pin connector on underside of unit

Outputs 18-way screw connector on front

4.3 Status Indicators

1 2 3 4

P R T

RS-485 Rx RS-485 TxPower

Outputs 1 – 4

Fig. 6 IOX-4RO Status Indicators

Power Indicates that the CPU is running.

RS-485 Rx Flashes to indicate that the unit has received a valid Modbus message.

RS-485 Tx Flashes to indicate that the unit has sent a Modbus message.

Outputs 1–4 OFF when the output is off, ON when the output is on.

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IOX-4RO – Relay Outputs 11 (40)

4.4 Wiring

Do not reverse the power/communications connections as this may damage the
unit.

1

3

4

2

Pin Connection

24 VDC @ 42 mA

RS-485

-

+

A
B

Fig. 7 IOX-4RO power and RS-485 wiring

Relay 1 Common

Relay 1 Normally Open

Relay 1 Normally Closed

Relay 2 Common

Relay 2 Normally Open

Relay 2 Normally Closed

Relay 3 Common

Relay 3 Normally Open

Relay 3 Normally Closed

Relay 4 Common

Relay 4 Normally Open

Relay 4 Normally Closed

+24 VDC / 220 VAC

0 VDC / 220 VAC

RELAY

+

-

Fig. 8 IOX-4RO relay wiring example

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IO Extender User Manual HMSI-27-228 3.1

IOX-4RO – Relay Outputs 12 (40)

4.5 DIP Switch Settings

Switch Function Description

1–7 NODE ID Modbus Node ID — See Modbus Node ID Setting, p. 8

8

-

Not used

9 MODE Slave (OFF)

0 BAUD RATE OFF = 9600, ON = programmed. See Communication Settings, p. 9.

4.6 Data Registers

MODULE TYPE = 113

Modbus
Register

Register Name Low

Limit

High
Limit

Access Comments

00001 Relay Output 1 0 1 R/W

Status of Digital Outputs.

00002 Relay Output 2 0 1 R/W

00003 Relay Output 3 0 1 R/W

00004 Relay Output 4 0 1 R/W

30001 S/W Version /

Module Type

N/A N/A R High Byte = Software Version

Low byte = 113

40002 Digital Outputs N/A N/A R/W Digital Outputs in bits. 4(msb) - 1(lsb).

30100 DIP Switch 0 65535 R Status of DIP switch on front panel

40101 Watchdog Timer 0 255 R/W Timer in seconds.

0 = disabled. 1–255 = enabled.

40121 Baud Rate 2400 11520 R/W 2400, 4800, 9600,19200, 38400, 57600,

115200
(115200 is entered as 11520)

40122 Parity 0 2 R/W 0 = none, 1 = even, 2 = odd

40123 Stop Bits 1 2 R/W 1 = 1 stop bit, 2 = 2 stop bits

40124 Reply Delay 0 65535 R/W 0 = Disable, >0 = Enable (x10 ms)

4.6.1 Relay Output Register

The relay outputs can be read/written in a single register as follows:

MSB IOX-4RO Relay Outputs LSB

Address

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

32768 16384 8192 4096 2048 1024 512 256 128 64 32 16 8 4 2 1 40002

— — — — — — — — — — — —

4 3 2 1

Relay Output Number

4.6.2 Output Watchdog Timer

The watchdog timer is used to switch off all outputs in the event of a communications failure.
When register 40101 is set to zero, the watchdog timer is disabled.

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IOX-6RTD – RTD Inputs 13 (40)

5 IOX-6RTD – RTD Inputs

5.1 Description

The IOX-6RTD is a 6 RTD input module that can accommodate 2 or 3-wire RTD sensors. The
RTD inputs are isolated from the logic.

The RTD resistance is read by the module circuitry, linearised and converted to degrees Cel­sius. No ranging is required, as the module covers the full range of the RTD, as indicated in the
RTD table. The value read from the Modbus register is the actual temperature with 0.1 °C reso­lution. i.e., a value of 3451 corresponds to a temperature of 345.1 °C.

The RTD type is set up by writing a value to the RTD Type register. The value is obtained from
the table below. For example, to select PT100 RTD, the value “1” must be written to the RTD
Type register. All 6 RTD inputs adopt the same RTD type.

DIP switch 9 is used to select upscale or downscale burnout for break detection. A value of
32768 is used to indicate upscale burnout and a value of -32767 indicates downscale burnout.

As there is no inter-channel isolation, isolated RTD:s must be used in order to
prevent ground loops and read errors.

5.2 Technical Specifications

Power supply Logic supply voltage 12–24 VDC

Logic supply current 87 mA @ 12 V / 45 mA @ 24 V

RTD inputs Input points 6

RTD configuration 2- or 3-wire

Resolution 0.1 °C

Drift 100 ppm/°C typical

Line resistance effect < 0.1 °C balanced

Max. line resistance 100 Ohms

Isolation 1500 Vrms between field and logic

RTD type Number Type Range Accuracy

1 Pt100 -200 to +850 °C ±0.3 °C IEC

751:1983

2 Ni120 -80 to +320 °C ±0.3 °C

3 Pt1000 -200 to +850 °C ±0.3 °C

4 Ni1000 (DIN) -200 to +850 °C ±0.3 °C

5 Ni1000

(Landis+Gyr)

-200 to +850 °C ±0.3 °C

6 Ohms 10–400 Ω ±0.05 %

7

Ohms 100–4000 Ω ±0.05 %

Temperature Operating temperature -10 °C to + 50 °C

Storage temperature -40 °C to + 85 °C

Connectors Logic power and comms. 4-pin connector on underside of unit

Outputs 18-way screw connector on front

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IO Extender User Manual HMSI-27-228 3.1

IOX-6RTD – RTD Inputs 14 (40)

5.3 Wiring

Do not reverse the power/communications connections as this may damage the
unit.

1

3

4

2

12 VDC @ 87 mA

Pin Connection

24 VDC @ 45 mA

RS-485

-

+

A
B

Fig. 9 IOX-6RTD power and RS-485 wiring

Input 1a

1bInput

Input 1c

2aInput

Input 2b

2cInput

Input 3a

3bInput
Input 3c

4aInput
Input 4b

4cInput

Input 5a

5bInput
Input 5c

6aInput

RTD

3 Wire

Input 6b

6cInput

RTD

2 Wire

Fig. 10 IOX-6RTD input wiring example

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IO Extender User Manual HMSI-27-228 3.1

IOX-6RTD – RTD Inputs 15 (40)

5.4 Status Indicators

1 2 3 4
5 6

P R T

Inputs 1 – 6

RS-485 Rx RS-485 TxPower

Fig. 11 IOX-6RTD Status Indicators

Power Indicates that the CPU is running.

RS-485 Rx Flashes to indicate that the unit has received a valid Modbus message.

RS-485 Tx Flashes to indicate that the unit has sent a Modbus message.

Inputs 1–6 ON when the RTD is open circuit, OFF when the RTD is connected.

5.5 DIP Switch Settings

Switch Function Description

1–7 NODE ID Modbus Node ID — See Modbus Node ID Setting, p. 8

8

-

Not used

9 BREAK RTD break. When switched OFF, the RTD value will be -32767 when the RTD

is faulty. When set to ON, the RTD value will be 32768.

0 BAUD RATE OFF = 9600, ON = programmed. See Communication Settings, p. 9.

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IO Extender User Manual HMSI-27-228 3.1

IOX-6RTD – RTD Inputs 16 (40)

5.6 Data Registers

MODULE TYPE = 109

Modbus
Register

Register Name Low

Limit

High
Limit

Access Comments

30001 S/W Version /

Module Type

N/A N/A R High Byte = Software Version

Low byte = 109

30002 RTD Input 1 R

For ranges,see Technical Specifications,

p. 13.

30003 RTD Input 2 R

30004 RTD Input 3 R

30005 RTD Input 4 R

30006 RTD Input 5 R

30007 RTD Input 6 R

30008 Input Status 0 65535 R bit1 = 0 (OK)

bit1 = 1 (Error or open circuit)

30100 DIP Switch 0 65535 R Status of DIP switch on front panel

40101 RTD Type 1 7

R/W See Technical Specifications, p. 13.

40102 Line Frequency 50 60 R/W Line frequency

40103 Units Type 1 2 R/W 1 = °C, 2 = °F

40121 Baud Rate 2400 11520 R/W 2400, 4800, 9600, 19200,

38400,57600,115200

40122 Parity 0 2 R/W 0 = none, 1 = even, 2 = odd

40123 Stop Bits 1 2 R/W 1 = 1 stop bit, 2 = 2 stop bits

40124 Reply Delay 0 65535 R/W 0 = Disable, >0 = Enable. (x10 ms)

5.6.1 RTD Input Status

There is one status bit associated with each RTD input. These bits are used to indicate if the in­put is open circuit or over range, and if so the error bit will be set.

Bit 1 – Error Bit 2 – Not used Condition Status LED

0 0 Input working OK LED OFF

1 0 Open circuit/Over range LED ON

DIP Switch Status Register (30100)

MSB IOX-6RTD Input Status LSB

Address

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

32768 16384 8192 4096 2048 1024 512 256 128 64 32 16 8 4 2 1 30008

RTD6 Error

RTD5Error

RTD4 Error

RTD3 Error

RTD2 Error

RTD1 Error

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IOX-8DIO – Digital Inputs/Outputs 17 (40)

6 IOX-8DIO – Digital Inputs/Outputs

6.1 Description

The IOX-8DIO module has 8 digital inputs and 8 digital outputs. The inputs are isolated from the
logic by bi-directional opto-couplers. The common is connected internally to either the +V or -V
field power supply terminals, using a jumper inside the housing.

The inputs have internal counters associated with them. These are 32-bit counters allowing a
count value in the range 0-4294967295. This value can be cleared by writing a zero to the asso­ciated registers, or it can be preset to any other value using the same method.

The count values will be lost if power is disconnected.

The format of the registers allows the status of the inputs to be read either as single bits, or all
at once as a single register on the Modbus network.

The 8 digital outputs are of the type open collector (NPN). These may be used to drive lamps or
external relays when more drive capability is required. The outputs are isolated from the logic
and they share a common negative terminal.

When switch 9 is OFF, the module is configured as a Modbus slave and the outputs are written
to by the Modbus master (PC/PLC/HMI). Each output on the module can be individually
switched ON or OFF, or all outputs can be set up at the same time by writing a single number to
the output register that represents the status of all outputs.

6.2 Technical Specifications

Power supply Logic supply voltage 12–24 VDC

Logic supply current 33 mA @ 12 V / 19 mA @ 24 V

Field supply voltage 12–24 VDC

Field supply current 6 mA @ 12 V / 6 mA | 24 V

Digital inputs Input points 8

Input voltage range 12–24 VDC

Input current per input 5 mA @ 12 V / 11 mA @ 24 V

Isolation 1500 Vrms between field and logic

Digital outputs Output points 8

Maximum voltage 36 VDC

Maximum current 100 mA per output

VCEon 1.1 V (max)

Isolation 1500 Vrms between field and logic

Counters Inputs 1 to 16

Resolution 32 bits

Frequency 1 KHz (max)

Pulse width 500 µs (min)

Temperature Operating temperature -10 °C to + 50 °C

Storage temperature -40 °C to + 85 °C

Connectors Logic power and comms. 4-pin connector on underside of unit

Outputs 18-way screw connector on front

Inputs 1 to 8 are used both as digital inputs and counter inputs.

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IOX-8DIO – Digital Inputs/Outputs 18 (40)

6.3 Wiring

Do not reverse the power/communications connections as this may damage the
unit.

1

3

4

2

12 VDC @ 33 mA

Pin Connection

24 VDC @ 19 mA

RS-485

-

+

A
B

Fig. 12 IOX-8DIO power and RS-485 wiring

Input 1

Input 2

Input 3

Input 4

Input 5

Input 6

Input 7

Input 8

Output 1

+12–24 VDC

or

0 VDC

+12–24 VDC

0 VDC

+V

0V

+12–24 VDC

RELAY

+

-

Output 2

Output 3

Output 4

Output 5

Output 6

Output 7

Output 8

( Set internal jumper )

Fig. 13 IOX-8DIO input/output wiring example

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IOX-8DIO – Digital Inputs/Outputs 19 (40)

6.4 Status Indicators

I1 I2 I3 I4

I7 I8I5 I6

O1 O2 O3 O4

O7 O8O5 O6

P R T

Inputs 1 – 8

Outputs 1 – 8

RS-485 Rx RS-485 TxPower

Fig. 14 IOX-8DIO Status Indicators

Power Indicates that the CPU is running.

RS-485 Rx Flashes to indicate that the unit has received a valid Modbus message.

RS-485 Tx Flashes to indicate that the unit has sent a Modbus message.

Inputs 1–8 OFF when the input is off, ON when the input is on.

Outputs 1–8 OFF when the output is off, ON when the output is on.

6.5 DIP Switch Settings

Switch Function Description

1–7 NODE ID Modbus Node ID — See Modbus Node ID Setting, p. 8

8

INVERT

ON = status of the inputs is inverted in the Modbus status register (30002)

9 MODE OFF (Slave)

0 BAUD RATE OFF = 9600, ON = programmed. See Communication Settings, p. 9.

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IOX-8DIO – Digital Inputs/Outputs 20 (40)

6.6 Jumper Settings

The digital inputs can be configured as NPN or PNP by changing the position of jumper LK1.

LK1 jumper setting

Position Function

NPN (default) Digital inputs operated by switching to -V (0 V)

PNP Digital inputs operated by switching to +V (+12 V to +24 V)

LK1

LK1

PNP NPN

PNP NPNPNP NPN

Fig. 15 LK1 jumper setting

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6.7 Data Registers

MODULE TYPE = 102

Modbus
Register

Register Name Low

Limit

High
Limit

Access Comments

10001 Digital Input 1 0 1 R

Status of digital inputs

10002 Digital Input 2 0 1 R

10003 Digital Input 3 0 1 R

10004 Digital Input 4 0 1 R

10005 Digital Input 5 0 1 R

10006 Digital Input 6 0 1 R

10007 Digital Input 7 0 1 R

10008 Digital Input 8 0 1 R

00017 Digital Output 1 0 1 R/W

Status of digital outputs

00018 Digital Output 2 0 1 R/W

00019 Digital Output 3 0 1 R/W

00020 Digital Output 4 0 1 R/W

00021 Digital Output 5 0 1 R/W

00022 Digital Output 6 0 1 R/W

00023 Digital Output 7 0 1 R/W

00024 Digital Output 8 0 1 R/W

30001 S/W Version /

Module Type

N/A N/A R High Byte = Software Version

Low byte = 102

30002 Digital Inputs N/A N/A R Digital inputs in lower 8 bits. 8-1.

40003 Digital Outputs N/A N/A R/W Digital outputs in lower 8 bits. 8-1.

40004 Counter 1 MSB 0 65535 R/W

Counter MSB and LSB combine to give a
32-bit counter with range 0-4294967295.

40005 Counter 1 LSB 0 65535 R/W

40006 Counter 2 MSB 0 65535 R/W

40007 Counter 2 LSB 0 65535 R/W

40008 Counter 3 MSB 0 65535 R/W

40009 Counter 3 LSB 0 65535 R/W

40010 Counter 4 LSB 0 65535 R/W

40011 Counter 4 LSB 0 65535 R/W

40012 Counter 5 MSB 0 65535 R/W

40013 Counter 5 LSB 0 65535 R/W

40014 Counter 6 MSB 0 65535 R/W

40015 Counter 6 LSB 0 65535 R/W

40016 Counter 7 MSB 0 65535 R/W

40017 Counter 7 LSB 0 65535 R/W

40018 Counter 8 MSB 0 65535 R/W

40019 Counter 8 LSB 0 65535 R/W

30100 DIP Switch 0 65535 R Status of DIP Switch on Front Panel

40101 Watchdog Timer 0 255 R/W Timer in seconds. 0 = disabled. 1–255 =

enabled.

40105 Counter Mode 0 2 R/W 0 = Disable, 1 = Up Counting, 2 = Up/

Down Count

40106 Input Filter 0 65535 R/W 0 = Disable, >0 = Enable. (x10 ms)

40121 Baud Rate 2400 11520 R/W 2400, 4800, 9600, 19200,

38400,57600,115200

40122 Parity 0 2 R/W 0 = none, 1 = even, 2 = odd

40123 Stop Bits 1 2 R/W 1 = 1 stop bit, 2 = 2 stop bits

40124 Reply Delay 0 65535 R/W 0 = Disable, >0 = Enable. (x10 ms)

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6.7.1 Digital Input Register

The digital inputs can be read in a single register as follows:

MSB IOX-8DIO Digital Inputs LSB

Address

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

32768 16384 8192 4096 2048 1024 512 256 128 64 32 16 8 4 2 1 30002

— — — — — — — —

8 7 6 5 4 3 2 1

Digital Input Number

6.7.2 Digital Output Register

The digital outputs can be read/written in a single register as follows:

MSB IOX-8DIO Digital Outputs LSB

Address

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

32768 16384 8192 4096 2048 1024 512 256 128 64 32 16 8 4 2 1 40003

— — — — — — — —

8 7 6 5 4 3 2 1

Digital Output Number

6.7.3 Counter Registers

Counters are stored in two 16-bit registers: the High Register and the Low Register. To get the
actual 32-bit count value, the registers must be combined as follows:

Counter High Value Register 40003

Counter Low Value Register 40004

Counter Value (Counter High Value x 65535) + Counter Low Value

6.7.4 Output Watchdog Timer

The watchdog timer is used to switch off all outputs in the event of a communications failure.
When register 40101 is set to zero, the watchdog timer is disabled.

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7 IOX-DAIO – Digital and Analog Inputs/Outputs

7.1 Description

The IOX-DAIO module is a multi-purpose combination of inputs and outputs. It can accommo­date the following:

• 2- or 3-wire RTD sensors

• Current (0–20 mA) inputs

• Voltage (0–10 V) inputs

• Current (0–20 mA) output

• Voltage (0–10 V) output

• Digital inputs

• Digital outputs

7.1.1 RTD Inputs

The RTD resistance is read by the module circuitry, linearised and converted to degrees Cel­sius. No ranging is required, as the module covers the full range of the RTD, as indicated in the
RTD table. The value read from the Modbus register is the actual temperature with 0.1 °C reso­lution. i.e., a value of 3451 corresponds to a temperature of 345.1 °C.

The RTD type is set up by writing a value to the RTD Type register. The value is obtained from
the table below. For example, to select PT100 RTD, the value “1” must be written to the RTD
Type register. All 6 RTD inputs adopt the same RTD type.

A value of -32767 indicates downscale burnout.

As there is no inter-channel isolation, isolated RTD:s must be used in order to
prevent ground loops and read errors.

7.1.2 Analog Inputs

The Analog Inputs can be configured by internal jumpers as current inputs (0–20 mA), or as
voltage inputs (0–10 V). An input within these ranges represents an output value range of 0–
4095 (12 bits) in the corresponding Modbus register.

7.1.3 Analog Output

The single analog output can be configured by internal jumpers for a current output (0–20 mA),
or a voltage output (0–10 V).

The resolution is 12 bits, so writing a value to the Modbus register of 0–4095 would give an out­put current of 0–20 mA. A value of 819 ± 1LSB will give a current output of 4 mA.

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7.1.4 Digital Inputs

There are 4 digital inputs on the module. These share a common terminal and can be config­ured for common positive or common negative.

The inputs have counters associated with them, which operate in three modes:

Mode 0 All counters are disabled.

Mode 1 All counters are 32-bit counters allowing a count value 0–4294967295. The count

value can be cleared by writing a zero to the associated registers, or they can be
preset to any other value using the same method.

Mode 2 The inputs are connected as up/down counters. Input 1 will count counter 1 up,

while input 2 counts counter 1 down.

The count values will be lost if power is disconnected.

The format of the registers allows the status of the inputs to be read either as single bits, or all
at once as a single register on the Modbus network.

7.1.5 Digital Outputs

The 2 digital outputs are of the type open collector (NPN). These may be used to drive lamps or
external relays when more drive capability is required. The outputs are isolated from the logic
and they share a common negative terminal.

The outputs are written to by a Modbus master device, such as a PC / PLC / HMI. Each output
on the module can be individually switched ON or OFF, or all outputs can be set up at the same
time by writing a single number to the output register that represents the status of all outputs.

An output watchdog timer can be configured to switch off all outputs if there has been no com­munication with the module for up to 255 seconds. A value of 0 seconds will disable this timer
and the outputs will remain in the last programmed state.

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IOX-DAIO – Digital and Analog Inputs/Outputs 25 (40)

7.2 Technical Specifications

Power supply Logic supply voltage 12–24 VDC

Logic supply current 115 mA @ 12 V / 58 mA @ 24 V

Field supply voltage 24 VDC

Field supply current 25 mA

RTD inputs Input points 2

RTD configuration 2- or 3-wire

Resolution 0.1 °C

Drift 100 ppm/°C typical

Line resistance effect < 0.1 °C balanced

Max. line resistance 100 Ω

Isolation 1500 Vrms between field and logic

RTD type Number Type Range Accuracy

1 Pt100 -200 to +850 °C ±0.3 °C IEC

751:1983

2 Ni120 -80 to +320 °C ±0.3 °C

3 Pt1000 -200 to +850 °C ±0.3 °C

4 Ni1000 (DIN) -200 to +850 °C ±0.3 °C

5 Ni1000

(Landis+Gyr)

-200 to +850 °C ±0.3 °C

6 Ohms 10–400 Ω ±0.05 %

7

Ohms 100–4000 Ω ±0.05 %

Current inputs Input points 2

Input current 0–20 mA

Input resistance 250 Ω

Input type Range Resolution

1 0–4095 12 bits

2 0–20 mA 1 µA

3 +/- 20 mA 1 µA

Drift 100 ppm/°C

Accuracy 0.2 % of span

Isolation 1000 Vrms between field and logic

Voltage inputs Input points 2

Input voltage 0–1 VDC or 0–10 VDC

Input resistance 190 kΩ

Input type Range Resolution

4 0–4095 12 bits

5 0–10 V 1 mV

6 +/-10 V 1 mV

7 0–1 V 0.1 mV

8 +/-1 V 0.1 mV

Drift 100 ppm/°C

Accuracy 0.2 % of span

Isolation 1000 Vrms between field and logic

Current outputs Output points 1

Output current 0–20 mA

Output type Range Resolution

1 0–4095 12 bits

Drift 100 ppm/°C

Accuracy 0.05 % of span

Compliance 500 Ω max. @ 12 VDC

1000 Ω max. @ 24 VDC

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Voltage outputs Output points 2

Output voltage 0 (2)–10 V

Output type Range Resolution

2 0–4095 12 bits

Drift 100 ppm/°C

Accuracy 0.05 % of span

Compliance 200 Ω min. load

Digital inputs Input points 4

Input voltage range 10–26 VDC

Input current per input 4 mA @ 12 V / 8 mA @ 24 V

Isolation 1500 Vrms between field and logic

Digital outputs Output points 2

Maximum voltage 36 VDC

Maximum current 100 mA per output

VCEon 1.1 V (max)

Isolation 1500 Vrms between field and logic

Counters Inputs 1 to 4

Resolution 32 bits

Frequency 50 Hz (max)

Pulse width 20 ms (min)

Temperature Operating temperature -10 °C to + 50 °C

Storage temperature -40 °C to + 85 °C

Connectors Logic power and comms. 4-pin connector on underside of unit

Outputs 18-way screw connector on front

7.3 Status Indicators

I1 I2 I3 I4

I7 I8I5 I6

O1 O2 O3 O4

O7 O8O5 O6

Inputs 1 – 8

Outputs 1 – 8

RS-485 Rx RS-485 TxPower

P R T

Fig. 16 IOX-DAIO Status Indicators

Power Indicates that the CPU is running.

RS-485 Rx Flashes to indicate that the unit has received a valid Modbus message.

RS-485 Tx Flashes to indicate that the unit has sent a Modbus message.

Input/Output status LEDs are not available in the IOX-DAIO module.

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7.4 Wiring

Do not reverse the power/communications connections as this may damage the
unit.

1

3

4

2

12 VDC @ 115 mA

Pin Connection

24 VDC @ 58 mA

RS-485

-

+

A
B

Fig. 17 IOX-DAIO power and RS-485 wiring

RTD Input 1a

RTD 1bInput

RTD Input 2a

RTD 2cInput

Common/0V

Analog 1Input

Analog Input 2

Analog Out 1put
Common/0V

Digital 1Input
Digital Input 2

Digital 3Input

Digital Input 4

Digital CommonInput
Digital Output 1

Digital Output 2

RTD

3 Wire

+V

Common/0V

+24 VDC

0 VDC

+24 VDC

0 VDC

0 VDC

+24 VDC

or

+24 VDC

RELAY

+

-

+24 VDC

+

Two Wire Transmitter

0(4)–20 mA

-

Analog Load

0–20 mA

or

0–10 V

+

-

0 VDC

Fig. 18 IOX-DAIO input/output wiring example

7.5 DIP Switch Settings

Switch Function Description

1–7 NODE ID Modbus Node ID — See Modbus Node ID Setting, p. 8

8

—

Not used

9

—

Not used

0 BAUD RATE OFF = 9600, ON = programmed. See Communication Settings, p. 9.

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7.6 Jumper Settings

The two analog inputs and single analog output can be configured for current or voltage by
changing the position of jumpers J7–J11.

J7 (AI1)
J8 (AI2)

Current input

Voltage input

Fig. 19 Analog inputs jumper setting

J9

J10J11

Current output

Voltage output

I V

I V

Fig. 20 Analog output jumper setting

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7.7 Data Registers

MODULE TYPE = 112

Modbus
Register

Register Name Low

Limit

High
Limit

Access Comments

10001 Digital Input 1 0 1 R

Status of Digital Inputs

10002 Digital Input 2 0 1 R

10003 Digital Input 3 0 1 R

10004 Digital Input 4 0 1 R

00017 Digital Output 1 0 1 R/W

Status of Digital Outputs

00018 Digital Output 2 0 1 R/W

30001 S/W Version /

Module Type

N/A N/A R High Byte = Software Version

Low byte = 102

30002 Digital Inputs N/A N/A R Digital inputs in lower 8 bits. 8-1.

40003 Digital Outputs N/A N/A R/W Digital outputs in lower 8 bits. 8-1.

40004 RTD Input 1

– –

R

For ranges, see Technical Specifications,

p. 25.

40005 RTD Input 2

– –

R

40006 Analog Input 1 0 4095 R

40007 Analog Input 2 0 4095 R

40008 Analog Output 0 4095 R/W

40009 Counter 1 MSB 0 65535 R/W

Counter MSB and LSB combine to give a
32-bit counter with range 0-4294967295.

40010 Counter 1 LSB 0 65535 R/W

40011 Counter 2 MSB 0 65535 R/W

40012 Counter 2 LSB 0 65535 R/W

40013 Counter 3 MSB 0 65535 R/W

40014 Counter 3 LSB 0 65535 R/W

40015 Counter 4 MSB 0 65535 R/W

40016 Counter 4 LSB 0 65535 R/W

30100 DIP Switch 0 65535 R Status of DIP Switch on Front Panel

40101 Watchdog Timer 0 255 R/W Timer in seconds. 0 = disabled. 1–255 =

enabled.

40102 Counter Mode 0 2 R/W 0 = Disable, 1 = Up Counting,

2 = Up/Down Count

40103 Input Filter 0 65535 R/W 0 = Disable, >0 = Enable. (x10 ms)

40104 RTD 1 Type 1 7

R/W

See Technical Specifications, p. 25

40105 RTD 2 Type 1 7

R/W

40106 AI 1 Type 1 8 R/W

40107 AI 2 Type 1 8 R/W

40108 AO Type 1 2 R/W 1 = 0–20 mA, 2 = 0–10 V

40109 Line Frequency 50 60 R/W Line frequency

40110 Units Type 1 2 R/W 1 = °C, 2 = °F

40121 Baud Rate 2400 11520 R/W 2400, 4800, 9600, 19200,

38400,57600,115200

40122 Parity 0 2 R/W 0 = none, 1 = even, 2 = odd

40123 Stop Bits 1 2 R/W 1 = 1 stop bit, 2 = 2 stop bits

40124 Reply Delay 0 65535 R/W 0 = Disable, >0 = Enable. (x10 ms)

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IOX-8AIV – Analog Voltage Inputs 30 (40)

8 IOX-8AIV – Analog Voltage Inputs

8.1 Description

The IOX-8AIV module has 8 analog voltage inputs. The inputs are isolated from the logic and
share a common negative terminal.

An input voltage of 0–10 V corresponds to an output of 0–4095 (12 bits) in the Modbus register.
If the OFFSET switch is switched on, 0–4095 represents 2–10 V.

If the jumper on the analog board is removed, the input range will be 0–5 V, or 1–5 V if the OFF­SET switch is on.

8.2 Technical Specifications

Power supply Logic supply voltage 12–24 VDC

Logic supply current 27 mA @ 12 V / 16 mA @ 24 V

Field supply voltage 12–24 VDC

Field supply current 8 mA @ 12 V / 15 mA @ 24 V

Voltage inputs Input points 8

Input voltage 0(2)–10 VDC or 0(1)–5 VDC

Input resistance 20 kΩ

Resolution 12 bits

Drift 50 ppm/°C

Accuracy 0.2 % of span

Isolation 1500 Vrms between field and logic

Temperature Operating temperature -10 °C to + 50 °C

Storage temperature -40 °C to + 85 °C

Connectors Logic power and comms. 4-pin connector on underside of unit

Outputs 18-way screw connector on front

8.3 Status Indicators

I1 I2 I3 I4

I7 I8I5 I6

Inputs 1 – 8

RS-485 Rx RS-485 TxPower

P R T

Fig. 21 IOX-8AIV Status Indicators

Power Indicates that the CPU is running.

RS-485 Rx Flashes to indicate that the unit has received a valid Modbus message.

RS-485 Tx Flashes to indicate that the unit has sent a Modbus message.

Inputs 1–8 OFF when the input is off, ON when the input is on.

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8.4 Wiring

Do not reverse the power/communications connections as this may damage the
unit.

1

3

4

2

- 12 VDC @ 27 mA

Pin Connection

+ 24 VDC @ 16 mA

+ Comms

- RS-485

Fig. 22 IOX-8AIV power and RS-485 wiring

Input 1

Common

Input 2

Common

Input 3

Common

Input 4

Common

+12–24 VDC

0 VDC

+V

0V/Common

Input 5

Common
Input 6

Common

Input 7

Common
Input 8
Common

+24 VDC

+

Voltage Source

0(2)–10 VDC

-

Sensor

Fig. 23 IOX-8AIV input wiring example

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8.5 DIP Switch Settings

Switch Function Description

1–7 NODE ID Modbus Node ID — See Modbus Node ID Setting, p. 8

8

—

Not used

9 OFFSET ON = inputs are scaled to accept a 2 V offset.

0 BAUD RATE OFF = 9600, ON = programmed. See Communication Settings, p. 9.

8.6 Data Registers

MODULE TYPE = 104

Modbus
Register

Register Name Low

Limit

High
Limit

Access Comments

30001 S/W Version /

Module Type

N/A N/A R High Byte = Software Version

Low byte = 102

30002 Analog Input 1 0 4095 R

Analog inputs in lower 12 bits.

30003 Analog Input 2 0 4095 R

30004 Analog Input 3 0 4095 R

30005 Analog Input 4 0 4095 R

30006 Analog Input 5 0 4095 R

30007 Analog Input 6 0 4095 R

30008 Analog Input 7 0 4095 R

30009 Analog Input 8 0 4095 R

30010 Input Status 0 65535 R bit 2 = 0 (open circuit or <2)

bit 2 = 1 (over range)
bit 1 = 0 (OK)
bit 1 = 1 (error)

30100 DIP Switch 0 65535 R Status of DIP Switch on Front Panel

40121 Baud Rate 2400 11520 R/W 2400, 4800, 9600, 19200,

38400,57600,115200

40122 Parity 0 2 R/W 0 = none, 1 = even, 2 = odd

40123 Stop Bits 1 2 R/W 1 = 1 stop bit, 2 = 2 stop bits

40124 Reply Delay 0 65535 R/W 0 = Disable, >0 = Enable. (x10 ms)

8.6.1 Analog Input Registers

The analog inputs are read as a 12 bit value in the registers as follows:

MSB IOX-8AIVAnalog Inputs LSB

Address

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

32768 16384 8192 4096 2048 1024 512 256 128 64 32 16 8 4 2 1 300xx

— — — — x x x x x x x x x x x x

Analog Input: 12 bit value (0–4095)

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8.6.2 Analog Input Status

There are two status bits associated with each analog input. These bits are used to indicate if
the input is zero or open circuit, in the working range 0–4095, or over range. If the input is open
circuit or over range, the error bit will be set. When the error bit is set, the range bit is zero if the
input is open circuit, and is set if the input is over range.

Bit 1 – Error Bit 2 – Range Condition Status LED

0 Any Input working OK Off

1 0 Open circuit or zero On

1 1 Over range Flashing

MSB IOX-8AIV Analog Input Status LSB

Address

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

32768 16384 8192 4096 2048 1024 512 256 128 64 32 16 8 4 2 1 30010

AI 8 Range

AI 8 Error

AI 7 Range

AI 7 Error

AI 6 Range

AI 6 Error

AI 5 Range

AI 5 Error

AI 4 Range

AI 4 Error

AI 3 Range

AI 3 Error

AI 2 Range

AI 2 Error

AI 1 Range

AI 1 Error

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IOX-8AIIS – Isolated Analog Current Inputs 34 (40)

9 IOX-8AIIS – Isolated Analog Current Inputs

9.1 Description

The 8 current inputs in the IOX-8AIIS module are fully isolated from input to logic, and between
inputs. This module is ideal for monitoring current loops that are isolated from each other and
which cannot be connected to a common point of reference.

An input current of 0–20 mA corresponds to an output of 0–4095 (12 bits) in the Modbus regis­ter. If the OFFSET switch is switched on, 0–4095 represents 4–20 mA.

The module can also be configured for a 0–20 mA input range or a +/- 20 mA input.

9.2 Technical Specifications

Power supply Logic supply voltage 12–24 VDC

Logic supply current 58 mA @ 12 V / 31 mA @ 24 V

Current inputs Input points 8

Input current 0(4)–20 20 mA

Input type Range Resolution

1 0–4095 12 bits

2 0–20 mA 1 µA

3 +/- 20 mA 1 µA

Drift 100 ppm/°C

Isolation 1000 Vrms between field and logic

350 V peak between each input

Temperature Operating temperature -10 °C to + 50 °C

Storage temperature -40 °C to + 85 °C

Connectors Logic power and comms. 4-pin connector on underside of unit

Outputs 18-way screw connector on front

9.3 Status Indicators

I1 I2 I3 I4

I7 I8I5 I6

Inputs 1 – 8

RS-485 Rx RS-485 TxPower

P R T

Fig. 24 IOX-8AIIS Status Indicators

Power Indicates that the CPU is running.

RS-485 Rx Flashes to indicate that the unit has received a valid Modbus message.

RS-485 Tx Flashes to indicate that the unit has sent a Modbus message.

Inputs 1–8 OFF when the input is off, ON when the input is on.

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9.4 Wiring

Do not reverse the power/communications connections as this may damage the
unit.

1

3

4

2

12 VDC @ 58 mA

Pin Connection

24 VDC @ 31 mA

RS-485

-

+

A
B

Fig. 25 IOX-8AIIS power and RS-485 wiring

Input 1

Common 1

Input 2

Common 2

Input 3

Common 3

Input 4

Common 4

0 VDC

+24 VDC

+

Input 5

Common 5

Input 6

Common 6

Input 7

Common 7

Input 8

Common 8

Two Wire Transmitter

0(4)–20 mA

+24 VDC

+

Current Source

0(4)–20 mA

-

Sensor

-

Fig. 26 IOX-8AIIS input wiring example

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9.5 DIP Switch Settings

Switch Function Description

1–7 NODE ID Modbus Node ID — See Modbus Node ID Setting, p. 8

8 OFFSET ON = inputs are scaled to accept a 4 mA offset.

9 OUT OF RANGE Out of range is given when the input is too negative or too positive.

OFF = the analog value will be loaded with -32767 when out of range.
ON = the analog value will be loaded with 32768 when out of range.

0 BAUD RATE OFF = 9600, ON = programmed. See Communication Settings, p. 9.

9.6 Data Registers

MODULE TYPE = 104

Modbus
Register

Register Name Low

Limit

High
Limit

Access Comments

30001 S/W Version /

Module Type

N/A N/A R High Byte = Software Version

Low byte = 102

30002 Analog Input 1 0 4095 R

Analog inputs in lower 12 bits.

30003 Analog Input 2 0 4095 R

30004 Analog Input 3 0 4095 R

30005 Analog Input 4 0 4095 R

30006 Analog Input 5 0 4095 R

30007 Analog Input 6 0 4095 R

30008 Analog Input 7 0 4095 R

30009 Analog Input 8 0 4095 R

30010 Input Status 0 65535 R bit 2 = 0 (open circuit or <2)

bit 2 = 1 (over range)
bit 1 = 0 (OK)
bit 1 = 1 (error)

30100 DIP Switch 0 65535 R Status of DIP Switch on Front Panel

40101 Analog Input

Type

0 5

R/W See Technical Specifications, p. 34.

40121 Baud Rate 2400 11520 R/W 2400, 4800, 9600, 19200,

38400,57600,115200

40122 Parity 0 2 R/W 0 = none, 1 = even, 2 = odd

40123 Stop Bits 1 2 R/W 1 = 1 stop bit, 2 = 2 stop bits

40124 Reply Delay 0 65535 R/W 0 = Disable, >0 = Enable. (x10 ms)

9.6.1 Analog Input Registers

The analog inputs are read as a 12 bit value in the registers as follows:

MSB IOX-8AIIS Analog Inputs LSB

Address

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

32768 16384 8192 4096 2048 1024 512 256 128 64 32 16 8 4 2 1 300xx

— — — — x x x x x x x x x x x x

Analog Input: 12 bit value (0–4095)

Netbiter

®

IO Extender User Manual HMSI-27-228 3.1

IOX-8AIIS – Isolated Analog Current Inputs 37 (40)

9.6.2 Analog Input Status

There are two status bits associated with each analog input. These bits are used to indicate if
the input is zero or open circuit, in the working range 0–4095, or over range. If the input is open
circuit or over range, the error bit will be set. When the error bit is set, the range bit is zero if the
input is open circuit, and is set if the input is over range.

Bit 1 – Error Bit 2 – Range Condition Status LED

0 Any Input working OK Off

1 0 Open circuit or zero On

1 1 Over range Flashing

MSB IOX-8AIIS Analog Input Status LSB

Address

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

32768 16384 8192 4096 2048 1024 512 256 128 64 32 16 8 4 2 1 30010

AI 8 Range

AI 8 Error

AI 7 Range

AI 7 Error

AI 6 Range

AI 6 Error

AI 5 Range

AI 5 Error

AI 4 Range

AI 4 Error

AI 3 Range

AI 3 Error

AI 2 Range

AI 2 Error

AI 1 Range

AI 1 Error

Netbiter®IO Extender User Manual HMSI-27-228 3.1

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Appendix A: Regulatory Compliance 39 (40)

A Regulatory Compliance

This product is in compliance with applicable EU directives. The Declaration of Conformity is
available at www.netbiter.com/support.

Netbiter®IO Extender User Manual HMSI-27-228 3.1

last page

© 2017 HMS Industrial Networks AB

Box 4126
300 04 Halmstad, Sweden

[e-mail] HMSI-27-228 3.1.5925 / 2017-10-25