Protech Systems SI-W309 User manual

USER
MANUAL
SI-W309
8 Channels Digital Input and
8 Channels Digital Output
I/O Module
SI-W309 M3

SI-W309
8Channels Digital Input and
8Channels Digital Output 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-W309
may have high
electrical voltage. We strongly recommend that only qualified
engineers are allowed to service and disassemble SI-W309. If any
damages should occur on SI-W309 and are caused by
unauthorized servicing, it will not be covered by the product
warranty.

Contents
Contents
Revision History ............................................................................................ iii
1Introduction ......................................................................................... 1-1
1.1 SI-W309 Introduction ................................................................. 1-2
1.2 Applications ................................................................................ 1-2
1.3 User Manual Structure ............................................................... 1-3
2Getting Started .................................................................................... 2-1
2.1 System Architecture ................................................................... 2-1
2.2 SI-W309 Overview ..................................................................... 2-2
2.3 Specifications ............................................................................. 2-4
2.3.1 SI-W309 Specifications....................................................... 2-4
2.3.2 I/O Specifications ................................................................ 2-5
2.4 About SI-W309 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 (JCN1)........................................... 3-3
3.1.2 RS-485 and Power Connector (JCN2) ............................... 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
SI-W309 SERIES USER MANUAL
Page: i

Contents
SI-W309 SERIES USER MANUAL
Page: ii
3.3 Mounting Support....................................................................... 3-8
3.3.1 Installing DIN-Rail Mount .................................................... 3-8
3.3.2 Installing 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 0x01 – Read Discrete Coils ................................. 4-5
4.2.2 Function 0x02 – Read Discrete Inputs ............................... 4-7
4.2.3 Function 0x04 – Read Temperature and Humidity Value ... 4-8
4.2.4 Function 0x05 – Force Coil................................................. 4-9
4.2.5 Function 0x41 – Read Module Setting ............................. 4-11
4.2.6 Function 0x42 – Write Module Setting.............................. 4-12
4.3 Address Mapping ..................................................................... 4-13
Appendix A Exploded Diagrams.................................................A-1
SI-W309 Assembly Exploded Diagram ....................................................A-2

Revision History
SI-W309 SERIES USER MANUAL
Page: iii
Revision History
The revision history of SI-W309 User Manual is described below:
Version No.
Revision History
Page No.
Date
M3
•In Section 3.2.1 I/O Wire
Connection,the descriptions and
diagram of Digital Input Wire
Connection have been revised.
3-5
2020/11/25
•The SI-W309 Assembly Exploded
Diagram and part no. table have
been revised.
A-2 & A-3
M2
•In Section 4.2.5 Functional 0x41
–Read Module Setting, the
contents of Response-1 (The
channel address is 0x0000.) table
have been revised.
4-11
2020/02/11
•In Section 4.3 Address Mapping,
the firmware version has been
revised to “00-20191126”.
4-13
M1
Initial Release
-
2019/11/27

SI-W309 SERIES USER MANUAL
Page: 1-1
1Introduction
This chapter provides the introduction for SI-W309
module, applications list as well as the framework of the
user manual.
The following topics are included:
•SI-W309 Introduction
•Applications
•User Manual Structure

Chapter 1 Introduction
SI-W309 SERIES USER MANUAL
Page: 1-2
1.1 SI-W309 Introduction
Thank you for purchasing our SI-W309: Industrial IoT (IIoT) Remote I/O Module
with 8 Channels Digital Input and 8 Channels Digital Output. SI-W309 Series is a set
of data acquisition and control modules 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
speed is up to 115.2 Kbps. SI-Wx09 Series provide Analog-to-Digital,
Digital-to-Analog, Digital Input / Output, Counters and other functions. All digital
input channels can be used as 32-bit counters. SI-W309 modules can communicate
with all computers and terminals. They use RS-485 transmission standards and
communicate with Modbus RTU protocol.
The RS-485 network only requires two wires, DATA+ and DATA-. A maximum of
256 SI-W309 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
SI-W309 SERIES USER MANUAL
Page: 1-3
1.3 User Manual Structure
Chapter 1 Introduction
This chapter gives the brief introduction of SI-W309, 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-W309 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 A Exploded Diagrams
This appendix provides the exploded diagrams and part numbers for SI-W309.

SI-W309 SERIES USER MANUAL
Page: 2-1
2 Getting 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-W309
properly.
The following topics are included:
•System Architecture
•SI-W309 Overview
•System and I/O Specifications
•I/O Module
•Block Diagrams
•Quick Start
•Safety Precautions

Chapter 2 Getting Started
SI-W309 SERIES USER MANUAL
Page: 2-1
2.1 System Architecture
The System Architecture diagram is shown as below:
Host Computer/ Edge Controller Gateway
Any computer, terminal or Edge controller Gateway can transfer data with
Modbus RTU Protocol 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-Wx09 is the series of the Remote I/O Modules which are designed by
Protech Systems. The bottom side I/O of the 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 the module is the I/O channels for monitoring and control.
It provide Analog-to-Digital, Digital-to-Analog, Digital Input / Output, Relay output,
Counters and other functions.

Chapter 2 Getting Started
SI-W309 SERIES USER MANUAL
Page: 2-2
2.2 SI-W309 Overview
Unit: mm
Front View Rear View
DO7 DO6 DO5 DO4 DO3 DO2 DO1
DO0
DO.PWR
DI5 DI4
1
DO.GND
DI7 DI6
DI3 DI2 DI1
DI0
18
1
(Y) DATA+ (G) DATA- GND.ISO (B) GND (R) +Vs
5
PWR R/W ERR MODBUS
SI-W309
90
Top View
Bottom View

Chapter 2 Getting Started
SI-W309 SERIES USER MANUAL
Page: 2-3
Left Side View Right Side View
113.9
40

Chapter 2 Getting Started
SI-W309 SERIES USER MANUAL
Page: 2-4
2.3 Specifications
2.3.1 SI-W309 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

220g
Dimensions (W x H x D)
113.9 x 90 x 40mm
Certificate

FCC/CE
Environment
Operating Temp.(with airflow)
-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-W309 SERIES USER MANUAL
Page: 2-5
2.3.2 I/O Specifications
Digital Input/ Counter
Channels

8
Type
Wet Contact, Source
On Voltage Level

Wet Contact, +3.5 ~ +50 V DC
Off Voltage Level
Wet Contact, +1V DC Max
Input Impedance

10KΩ, 0.5W
Counter
Channels : 8
Max. Count: 32-bits (0 ~ 4,294,967,285)
Max. Input Frequency : 50 Hz
Min. Pulse Width: 10 ms
Overvoltage Protection

70V DC
Digital Output
Channels

8
Type
Sink
Max. Load Current

700 mA/ channel
Load Voltage
3.5V ~ 50V DC
Overvoltage Protection

60V DC
Overload Protection
Yes
Short-circuit Protection

Yes
Power-on Value
Yes, Programmable

Chapter 2 Getting Started
SI-W309 SERIES USER MANUAL
Page: 2-6
2.4 About SI-W309 I/O Module
1. Common Specification of SI-W309 Series
Communication Interface:
RS-485 (3-wire) to Host
Speed: 9600, 19200, 38400, 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-W309 SERIES USER MANUAL
Page: 2-7
2. SI-W309 Digital Input and Digital Output I/O Module
SI-W309 Module provides 8 channels Digital Input and 8 Channels Digital
Output. For the Digital Input channels, the host computer can use digital
input channels to determine the states of safety switch and remote digital
signals or to be a counter. The Digital Output channels are sink type and
provide short-circuit and overvoltage protection and can be programmed
for power-on values. This is an excellent module for ON/OFF Control or
low-power switching applications.
Channels:
•8 Digital Input Channel
•8 Digital Output Channel
Digital Input:
•On Voltage Level: Wet Contact, +3.5V ~ +50VDC
•Off Voltage Level: Wet Contact, +1V DC Max
Digital Output:
•Load Voltage:+3.5V ~ +50VDC
•Overvoltage Protection:60V DC
DO.PWR
SI-W309
PWR R/W ERR MODBUS
1
(Y) DATA+ (G) DATA- GND.ISO (B) GND
(R) +Vs
5
DO7 DO6 DO5 DO4 DO3
DO2 DO1 DO0
DI5 DI4
1
DO.GND
DI7 DI6
DI3 DI2 DI1
DI0
18

Chapter 2 Getting Started
SI-W309 SERIES USER MANUAL
Page: 2-8
2.5 Block Diagram
Converter
DC / DC
MCU
EEPROM
9~50V
GND
+5V
RS-485
DO_0
DO_7
DO_PWR
DO_GND
DI_7
DO_PWR
DI_0
Data
Isolation

Chapter 2 Getting Started
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Page: 2-9
2.6 Quick Start
To install SI-W309 I/O module, follow the steps below:
1. Refer to Section 3.1 PIN Assignment 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 PIN
Assignment for terminal assignment.
4. Connect the pin 4 and pin 5 of the module (SI-W309) to the power supply
using the GND and +Vs terminals. See Section 3.1 PIN Assignment 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-W309 SERIES USER MANUAL
Page: 2-10
2.7 Safety Precautions
Before operating SI-W309, read the following information carefully to protect it from
damages, and extend the life cycle of SI-W309.
1. Check the Line Voltage
•The operating voltage for the power supply should be within the range of
9~50V DC; otherwise, SI-W309 may be damaged.
2. Environmental Conditions
•Place your SI-W309 on a sturdy, level surface. Be sure to allow enough
space around SI-W309 to have easy access needs.
•Avoid installing your SI-W309 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-W309 from any heating device.).
Or do not use SI-W309 when it has been left outdoors in a cold winter day.
•Avoid moving SI-W309 rapidly from a hot place to a cold place, and vice
versa, because condensation may occur inside SI-W309.
•Do not place SI-W309 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-W309.
•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.