Protech Systems SI-W709 User manual

USER
MANUAL
SI-W709
ThermocoupleI/OModule
SI-W709 M3

SI-W709
Thermocouple I/O Module
COPYRIGHT NOTICE & TRADEMARK
All trademarks and registered trademarks mentioned herein are the
property of their respective owners.
This manual is copyrighted in Nov. 2020. You may not reproduce
or transmit in any form or by any means, electronic, or
mechanical, including photocopying and recording.
DISCLAIMER
This user’smanual is meant to assist users in installing and setting up
the system. The information contained in this document is subject to
change without any notice.
CE NOTICE
This is a class A product. In a domestic environment this product may
cause radio interference in which case the user may be required totake
adequate measures.

FCC NOTICE
This equipment has been tested and found to comply with the limits for
a Class A digital device, pursuant to part 15 of the FCC Rules. These
limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is
likely to cause harmful interference in which case the user will be
required to correct the interference at his own expense.
You are cautioned that any change or modifications to the equipment
not expressly approve by the party responsible for compliance could
void your authority to operate such equipment.
WARNING: Some internal parts of SI-W709
may have high
electrical voltage. We strongly recommend that only qualified
engineers are allowed to service and disassemble SI-W709. If any
damages should occur on SI-W709 and are caused by
unauthorized servicing, it will not be covered by the product
warranty.

Contents
i
Contents
Revision History .............................................................................................ii
1Introduction.........................................................................................1-1
1.1 SI-W709 Introduction ................................................................. 1-2
1.2 Applications ................................................................................ 1-2
1.3 User Manual Structure ............................................................... 1-3
2Getting Started....................................................................................2-1
2.1 System Architecture .................................................................... 2-2
2.2 SI-W709 Overview ..................................................................... 2-3
2.3 Specifications ............................................................................. 2-5
2.4 About SI-W709 I/O Module ........................................................ 2-6
2.5 Block Diagram ............................................................................ 2-8
2.6 Quick Start.................................................................................. 2-9
2.7 Safety Precautions ................................................................... 2-10
3Hardware Configuration.....................................................................3-1
3.1 PIN Assignment .......................................................................... 3-2
3.1.1 I/O Channel Connector ....................................................... 3-3
3.1.2 RS-485 and Power Connector ............................................ 3-4
3.2 Application Wiring ...................................................................... 3-5
3.2.1 I/O Wire Connection............................................................ 3-5
3.2.2 Power Supply Wire ............................................................. 3-6
3.2.3 Communication Wiring ........................................................ 3-7
3.3 Mounting Support ....................................................................... 3-8
3.3.1 Installing DIN-Rail Mount .................................................... 3-8

Contents
ii
3.3.2Installing Wall Mount ........................................................... 3-9
3.4 Default Settings ........................................................................ 3-10
3.5 Technical Support ..................................................................... 3-11
4MODBUS RTU Protocol......................................................................4-1
4.1 Command Format ...................................................................... 4-2
4.1.1 READ Command ................................................................ 4-2
4.1.2 WRITE Command ............................................................... 4-3
4.2 Function List ............................................................................... 4-4
4.2.1 Function 0x03 – Read Analog Input Channel Value ........... 4-5
4.2.2 Function 0x04 – Read Analog Input Channel Value ........... 4-6
4.2.3 Function 0x06 – Write Analog Input Channel Value ........... 4-8
4.2.4 Function 0x41 – Read Module Setting ............................... 4-9
4.2.5 Function 0x42 – Write Module Setting .............................. 4-10
4.3 Address Mapping ..................................................................... 4-11
Appendix A Exploded Diagrams.................................................A-1
SI-W709 Assembly Exploded Diagram .........................................................A-2

Revision History
ii
Revision History
The revision history of SI-W709 User Manual is described below:
Version No.
Revision History
Date
M3
•
The Pin Assignment diagrams on Page
2-7, 3-2, 3-3, 3-4 has been revised.
•The analog input range for Value 02 has
been changed to
±
100mV on Page 4-12.
•The SI-
W709 System Exploded Diagram
and part no. table have been revised on
Page A-2 and Page A-3.
2020/11/24
M2
•The Response-1
table has been revised
on Page 4-9.
•The firmware version in Section 4.3
Address Mapping has been revised on
Page 4-11.
2020/2/12
M1
Initial Release
2019/10

Page: 1-1
SI-W709 SERIES USER MANUAL
1Introduction
This chapter provides the introduction for SI-W709
module, applications list as well as the framework of the
user manual.
The following topics are included:
•SI-W709 Overview
•Applications
•User Manual Structure

Chapter 1 Introduction
Page: 1-2
SI-W709 SERIES USER MANUAL
1.1 SI-W709 Introduction
Thank you for purchasing our SI-W709 Industrial IoT (IIoT) Remote I/O Module.
SI-W709 Series is a set of data acquisition that can be remotely controlled by using
Modbus RTU protocol. The communication interface between the module and the
host is RS-485 serial bus. The baud rate is software programmable and transmission
speeds is up to 115.2 Kbps. SI-Wx09 Series provide Analog-to-Digital,
Digital-to-Analog, Digital Input / Output, Counters and other functions. SI-W709
modules can communicate with all computers and terminals. SI-W709 Remote I/O
Module has 8 channels of Analog Input include Voltage, Current and Thermocouple.
The RS-485 network only requires two wires, DATA+ and DATA-. A maximum of
256 SI-W709 modules can be connected to an RS-485 network, and the transmission
distance can reach up to 4000 feet. For the power requirements, the modules are
designed for standard industrial unregulated 24 VDC Power input; however, they
accept any power unit that supplies power within the range of +9 to +50 VDC.
1.2 Applications
Building Automation
Factory Automation
Machine Automation
Remote Maintenance
Remote Diagnosis
Testing Equipment

Chapter 1 Introduction
Page: 1-3
SI-W709 SERIES USER MANUAL
1.3 User Manual Structure
Chapter 1 Introduction
This chapter gives the brief introduction of SI-W709, applications list as well as the
framework of this user manual.
Chapter 2 Getting Started
This chapter describes the system architecture and system and I/O specifications,
illustrates the physical appearances, block diagrams, I/O module as well as quick
installation guide. Read the safety reminders carefully on how to take care of
SI-W709 properly.
Chapter 3 Hardware Configuration
This chapter describes the information of pin assignment, application wiring,
mounting support as well as default settings. It also provides technical support
information.
Chapter 4 MODBUS RTU Protocol
This chapter describes the command format, function list and address mappings
information for MODBUS RTU protocol.
Appendix AExploded Diagrams
This appendix provides the exploded diagrams and part numbers for SI-W709.

Page: 2-1
SI-W709 SERIES USER MANUAL
2Getting Started
This chapter describes the system architecture and system and
I/O specifications, illustrates the physical appearances, block
diagrams, I/O modules as well as quick installation guide. Read
the safety reminders carefully on how to take care of SI-W709
properly.
The following topics are included:
•System Architecture
•SI-W709 Overview
•System and I/O Specifications
•I/O Module
•Block Diagrams
•Quick Start
•Safety Precautions

Chapter 2 Getting Started
Page: 2-2
SI-W709 SERIES USER MANUAL
2.1 System Architecture
The System Architecture diagram is illustrated as below:
Host Computer/ Edge Controller Gateway
Any computer, terminal or Edge controller Gateway can transfer data with Modbus
RTUProtocol by using RS-232 or RS-485 serial interfaces. When only RS-232 is
available, an RS-232 to RS-485 converter is required to convert the signals to the
correct RS-485 data format. The Modbus protocol is easy to integrate Modbus
compatible equipment into monitoring and control applications.
Remote I/O Module
SI-W709 is the series of the Remote I/O Modules which are designed by Protech
Systems. The bottom side I/O of module include RS-485 interface and power supply.
The interface of communication is the RS-485 with 3-wire unregulated connector.
The modules accept any power unit that supplies power within the range of +9 to +50
VDC. For the standard power unit, they are designed for standard industrial
unregulated 24 VDC Power input.
The top side I/O of module is the I/O channels for monitoring and control. It
providesAnalog-to-Digital, Digital-to-Analog, Digital Input / Output, Relay output,
Counters and other functions.

Chapter 2 Getting Started
SI-W709 SERIES USER MANUAL
Page: 2-3
2.2 SI-W709 Overview
Unit: mm
Front View Rear View
Top View
Bottom View
90

Chapter 2 Getting Started
SI-W709 SERIES USER MANUAL
Page: 2-4
Left Side View Right Side View
40
113.9

Chapter 2 Getting Started
SI-W709 SERIES USER MANUAL
Page: 2-5
2.3 Specifications
System Specification
Communication Interface
RS-485
Baud Rate
9,600 bps ~ 115,200 bps (Max)
Communication Protocol
Modbus /RTU
Intra-module Isolation
3000V
Installation
DIN-Rail, Wall Mount
LED Indicator
Power LED, Green
R/W LED, Orange
Error LED, Red
Modbus LED, Green
I2C Interface
Temperature/ Humidity Sensor Module
Power Supply
9 ~ 50V DC In from terminal block
System Weight
220 g
Dimensions (W x H x D)
115 x 90 x 40 mm
Certificate
FCC/CE
I/O - Analog Input
Channels
8
Wiring
Differential
Sensor Type
Thermocouple
J, K, T, E, R, S, B
Voltage
±15 mV, ±50 mV, ±100 mV, ±500 mV, ±1V, ±2.5 V
Current
±
20 mA, 0 ~ 20 mA, +4 ~ 20 mA
Resolution
16-bit
Sample Rate
10Hz (Total)
Accuracy
0.1% of FSR
Input Impedance
>400 KΩ
Common Voltage Protection
25V DC
Overvoltage Protection
±120V DC
Environment
Operating Temperature
(with airflow)
-25°C ~ 75°C (13°F ~ 167°F)
Storage Temperature

-40°C ~ 85°C (-4°F ~ 185°F)
Humidity
20% ~ 90%

Chapter 2 Getting Started
SI-W709 SERIES USER MANUAL
Page: 2-6
2.4 About SI-W709 I/O Module
1. Common Specification of SI-W709 Series
Communication Interface:
RS-485 (3-wire) to Host
Speed: 9600, 19200, 38400, 57600, 115200 bps
Maximum Communication Distance: 4000 feet (1.2km)
Power and communication LED Indicator
PWR: Power indicator with Green LED
R/W: Data Read/Write indicator with Orange LED
ERR: Error indicator with Red LED
Modbus: Modbus communication indicator with Green LED
Up to 256 I/O modules per serial port
Power Requirement
Unregulated +9 ~ +50V DC
Mechanical
Case: ABS+PC
Plug-In Screw: Strip Length : 6~7mm
Suitable Electric Wire: AWG 14~28
Environment:
EMI: FCC Class A and CE
Operation Temperature: -25°C ~ 75°C (-13°F ~ 167°F)
Storage Temperature: -40°C ~ 85°C (-40°F ~ 185°F)
Humidity: 20% ~ 90%

Chapter 2 Getting Started
SI-W709 SERIES USER MANUAL
Page: 2-7
2. SI-W709 Thermocouple I/O Module
SI-W709 Module provides 8 channels Analog Input include voltage,
current input and thermocouple input. SI-W709 series provide a
programmable input range on all analog input channels. The range of
analog input is 16-bit at +/- 15mV, +/- 50mV, +/-100mV, +/-500mV, +/-1V,
+/-2.5V, 4~20mA, 0~20mA, -20~+20mA. This module is a cost-effective
solution for industrial measurement, monitoring and control applications.
Channels:
•8 Analog Input Channels
Analog Input:
•Type : +-15 mV, +- 50 mV, +-100 mV, +- 500 mV, +-1V, +-2.5V, ±20 mA,
0 ~ 20 mA, 4 ~ 20 mA
•Resolution: 16-bit
SI-W709
PWR R/W ERR MODBUS
15
(Y) DATA+ (G) DATA-
GND.ISO (B) GND (R) +Vs
Vin8-
18
Vin8+
Vin7-
Vin7+
Vin6-
Vin6+
Vin5-
Vin5+
Vin4-
Vin4+
Vin3-
Vin3+
Vin2-
Vin2+
Vin1-
Vin1+
1
AGND AGND

Chapter 2 Getting Started
SI-W709 SERIES USER MANUAL
Page: 2-8
2.5 Block Diagram
EEPROM
1x5
485+
485-
iso GND
Terminal Blocks
+5V
+9~+50V
DC in
iso GND
PWR
LED1
RW
LED2
ERR
LED3
GND
GND
CH1+
CH1-
CH2+
CH3+
CH4+
CH5+
CH6+
CH7+
CH8+
CH2-
CH3-
CH4-
CH5-
CH6-
CH7-
CH8-
SPISPI
16bits ADC
AD7712
RS-485
UART TX
UART RX
MCU
64KB flash ROM
SM59R16A5
+5V
ISO
I2C
Analog Mulplexer
Isolator
-5V
I2C wafer

Chapter 2 Getting Started
SI-W709 SERIES USER MANUAL
Page: 2-9
2.6 Quick Start
To install SI-W709 I/O module, follow the steps below:
1. Refer to Section 3.1 for the pin assignment of terminal block and
Section 3.2 for application wiring.
2. Open the Modbus utility for the host control.
3. Connect the module to the RS-485 network using the DATA+ and DATA-
(GND) terminals. If the host is only equipped with an RS-232 interface, an
RS-232 to RS-485 converter will be required. See Section 3.1 for terminal
assignment.
4. Connect the pin 4 and pin 5 of the module (SI-W709) to the power supply
using the GND and +Vs terminals. See Section 3.1 for terminal
assignment. Note that the voltage supplied to the module should be in the
range of +9 to +50 VDC.
5. Use the Modbus RTU Protocol and configure the module by using the
following commands:
Read the Baud Rate Setting from the Holding Register (0x0020) by
sending “01 41 00 20” command to the module. Check the settings of
the module and utility are the same.
To read data from Input channels by sending function code 02h to
read data from input channels.

Chapter 2 Getting Started
SI-W709 SERIES USER MANUAL
Page: 2-10
2.7 Safety Precautions
Before operating SI-W709, read the following information carefully to protect it from
damages, and extend the life cycle of SI-W709.
1. Check the Line Voltage
•The operating voltage for the power supply should be within the range of
9~50V DC; otherwise, SI-W709 may be damaged.
2. Environmental Conditions
•Place your SI-W709 on a sturdy, level surface. Be sure to allow enough
space around SI-W709 to have easy access needs.
•Avoid installing your SI-W709 in extremely hot or cold places.
•Avoid direct sunlight exposure for a long period of time (for example, in a
closed car in summer time. Also keep SI-W709 from any heating device.).
Or do not use SI-W709 when it has been left outdoors in a cold winter day.
•Avoid moving SI-W709 rapidly from a hot place to a cold place, and vice
versa, because condensation may occur inside SI-W709.
•Do not place SI-W709 too close to any radio-active device. Radio-active
device may cause signal interference.
3. Handling
•Avoid placing heavy objects on the top of SI-W709.
•Do not allow any objects to fall into this device.
•If water or other liquid spills into the device, unplug the power cord
immediately.
4. Good Care
•When the outside case gets stained, remove the stains using neutral washing
agent with a dry cloth.
•Never use strong agents such as benzene and thinner to clean the surface of
the case.
•If heavy stains are present, moisten a cloth with diluted neutral washing
agent or alcohol and then wipe thoroughly with a dry cloth.
•If dust is accumulated on the case surface, remove it by using a
special vacuum cleaner for computers.

SI-W709 SERIES USER MANUAL
Page: 3-1
3Hardware Configuration
This chapter describes the information of pin assignment,
application wiring, mounting as well as default settings.
It also provides technical support information.
The following topics are included:
•PIN Assignment
•Application Wiring
•Mounting Support
•Default Settings
•Technical Support