DAUDIN GX-CM111 Serial Communication Module User Manual

Ensure the device is used indoors only and kept away from high temperatures and humidity.
Avoid dropping or bumping the device to prevent damage to electrical components.

Electrical Connection

Connect the module to a power source with a working voltage of 24 VDC.
Use the recommended wire gauge range and terminals for proper electrical connection.

Communication Setup

Configure the communication protocol based on your requirements: Modbus RTU Master / Slave.
Set the baud rate within the range of 1200 to 115.2 kbps according to your communication needs.

Data Handling

Choose the appropriate data bits, stop bits, and parity check settings for your communication.
Customize the response timeout and polling interval as needed for efficient data transfer.

Frequently Asked Questions

Q: Can the module be used outdoors?
- A: No, the module is designed for indoor use only to prevent damage from environmental factors.
Q: What is the recommended working voltage for the module?
- A: The recommended working voltage is 24 VDC with a tolerance of -15% to +20%.
Q: How many communication channels does the module support?
- A: The module supports three communication channels for versatile connectivity.
Q: What safety certifications does the module have?
- A: The module is CE certified for safety compliance.

Introduction

The GX-CM111 Serial Communication Module for Plug-in I/O is compatible with GX Series couplers. With a variety of functional modules, it enables Modbus master-slave, serial communication. Compact and efficient, these modules are designed for straightforward data handling, fitting various serial communication needs across multiple applications.

Product Features

Multi-Protocol Support
Simplified system configuration, supporting standard industrial communication protocols including PROFINET, EtherCAT, EtherNetIP, and ModbusTCP when used with a coupler.
Two Communication Interfaces
Offers interface options for RS485 and RS232.

Supporting Two Communication Protocols
Modbus RTU/ASCII
Compact Design
Space-saving, compact structure.
Easy Diagnostics
Intuitive and clear channel status display for simplified monitoring and maintenance.

Straightforward Configuration
Quick and easy module configuration.
Convenient Installation
Designed for standard DIN 35 mm rail mounting with quick-connect terminals for fast and easy wiring.

Caution (ATTENTION):

THIS DEVICE IS FOR INDOOR USE ONLY, DON’T PUT OR USE IT IN HIGH TEMPERATURE AND HIGH HIGHMOISTURE ENVIRONMENTS.
AVOID FALLING AND BUMPING OTHERWISE THE ELECTRICAL COMPONENTS WILL BE DAMAGED.
DON’T TRY TO DISASSEMBLE OR OPEN THE COVER UNDER ANY CIRCUMSTANCE IN ORDER TO AVOID DANGER.

IF THE EQUIPMENT IS USED IN A MANNER NOT SPECIFIED BY THE MANUFACTURER, THE PROTECTION PROVIDED BY THE EQUIPMENT MAY BE IMPAIRED.
THE INSTALLATION THAT THE SAFETY OF ANY SYSTEM INCORPORATING THE EQUIPMENT IS THE RESPONSIBILITY OF THE ASSEMBLER OF THE SYSTEM.
USE WITH COPPER CONDUCTORS ONLY. INPUT WIRING: MINIMUM 28 AWG, 85°C, OUTPUT WIRING:MINIMUM 28 AWG, 85°C

FOR USE IN A CONTROLLED ENVIRONMENT. REFER TO MANUAL FOR ENVIRONMENTAL CONDITIONS.
DISCONNECT ALL SOURCES OF SUPPLY BEFORE SERVICING.
PROPER VENTILATION IS REQUIRED TO REDUCE THE RISK OF HAZARDOUS OR EXPLOSIVE GAS BUILDUP DURING INDOOR CHARGING. SEE OWNERS MANUAL.

PLEASE BE SURE TO USE CERTIFIED POWER SUPPLY WITH SELV OUTPUT OR CERTIFIED POWER SUPPLY PROVIDING DOUBLE INSULATION EVALUATED BY UL60950-1, UL 62368-1, OR UL61010-1 AND UL61010-2-201 STANDARDS.

Module Specifications

Electrical Specifications

Electrical Specifications
Serial Communication Module	Working Voltage	24 VDC (-15%~+20%)
	Working Current	Max. 130mA @ 5VDC

General Specifications

General Specifications
Size (W x D x H)	Coupler	25 x 105 x 69mm
	I/O Module	12 x 105 x 69mm
Weight	Coupler	80g
	I/O Module	65g
Operating Temperature	0 … +60°C
Storage Temperature	-25˚C…+85˚C
Relative Humidity	RH 95%, non-condensing
Altitude Limit	< 2000m
IP Protection Level	IP 20
Pollution Degree	II
Safety Certifications	CE
Wire Gauge Range (IEC / UL)	0.2mm2 ~ 1.5mm2 / AWG 24~16
Recommended Terminals	DN00510D DN00710D

Communication Module Specifications

Serial Communication Specifications
Number of Channels	3
Communication Protocol	Modbus RTU Master / Slave
Communication Mode	Modbus Master, Slave, Free Port
Baud Rate Range	1200 to 115.2 kbps
Signal Type	RS232, RS485
Data Bits	7, 8
Stop Bits	1, 2
Parity Check	None, Odd, Even
Character Interval	1.5T~200T, default 3.5T
Response Timeout	Customizable, default 1000 ms
Polling Interval	Customizable, default 100 ms
Data Input Handling Mode	Retain last input value, clear input value
Data Output Mode	Polling, data change
Power-on Output Module Control Mode	Enable, disable
Output Module Control	Enable, disable
Output Module Control Mode	Polling (continuously active), rising-edge trigger (single activation)
Slave ID	Customizable, default 1
Slave Response Time	Customizable, default 50 ms
Free-Transmission Communication Mode	Auto-report, listening mode
System Indicators	1 Green LED(SP), 1 Red LED(AL)
Channel Indicators	3 Green LEDs, 3 Red LEDs

Module Panel Introduction

GX-CM111
Fig. 3.1 GX-RT200

NO.	Name			Description
1	Signal Terminal			Input/output signal interface, plug-in terminal
2	Channel Status Indicator			3 x Green LEDs, 3 x Red LEDs
3	System Bus Interface			Interface for communication and power supply
Status Indicators
Name		Label	Color	Status	Description
Communication Indicator		1A, 2A TX	Green	Flashing	Communication interface transmitting packets
				Off	No configuration or no packet transmission
		RA RX	Red	On	Module communication error, packet error, or response timeout
				Off	Normal module communication

Module Installation and Removal Instructions

Installation

Align each module unit’s side with the direction indicated by the arrow, and snap it onto the upper side of the DIN rail.
Once each unit is positioned, the clip automatically locks onto the rail.

Figure 4.1 Module Installation Diagram

Note: If the clip fails to engage, press the top of the clip to reset and secure it to the rail.

Removal

Use a screwdriver to pull down the metal hook on the bottom of each module unit. Following the reverse order of installation, remove each module unit from the DIN rail.

Module Dimensions

I/O and Functional Module Dimensions

Module Wiring Instructions

Communication Module

Parameter Setting and Configuration Instructions

Product Assembly Configuration
As shown in the image below, product configuration primarily involves couplers and I/O modules.

Quantity Limit for Configuration

A maximum of 64 physical I/O modules can be configured on the coupler.
The coupler supports up to 64 modules in total, including both expanded virtual and physical modules.

Virtual Module Limitations
Currently, only GX-CM111 applications are supported. For expanded commands, the virtual module configuration limit is set to 32.

Coupler Parameter Description

General Settings

Module Slot: Slot number (position); fixed at 0 for the coupler.
Device Name: Used for name recognition in Profinet network communication. Follow standard naming conventions for the settings.
Reset Time: Defaults to 0 if not set, meaning the reset function is disabled.
If the timeout parameter is set to 1000, it means that within 1 second, the module must exchange IO data with the host computer. If no data exchange occurs within this set time, the module will set the output channels to 0.

Hot Swap: Allows replacement of the same model module without powering down.

Network Settings

IP Address: Can be configured in IPv4 network address format, with a default factory setting of 192.168.1.20.

Subnet Mask: Configurable; default setting is 255.255.255.0.
Default Gateway: Configurable; default setting is 19.168.1.20.
Physical Address: Not configurable; MAC address is factory-set for network identification of different device modules.

Module Information

Firmware Version: Current module firmware version
Hardware Version: Module hardware design version

Product Serial Number: Unique identifier for Daudin products

As shown in Figure 6.2, all parameters (except MAC) can be configured as needed. After completing the settings, proceed to upload the parameters as shown in Figure 6.3.

Before proceeding with relevant settings, the system operation must be paused.

Factory Defaults

Apart from setting parameters through i-Designer, users can also reset system parameters using the reset button located inside the side casing.

Press Time/Mode	Application Mode
Light Press (<6 seconds)	Module restart (RESET)
Long Press (>6 seconds)	Restore default parameters (Application Mode)Note

Note: When the user presses the reset button for more than six seconds, the SYS light will illuminate red. After releasing the button, the red light will flash, indicating that the default parameters have been restored.

Error Code Lookup

Users can query system error information and identify timed-out physical modules via the error code module (virtual module).Once setup is complete, the error code module will automatically occupy the last three available slots. If no slots are available, the system will disregard it.

Error Code	Purpose	Length (Word)
System Error	System error information	2
Error Module (01-32)	Physical modules 1-32 triggering timeout	2
Error Module (33-64)	Physical modules 33-64 triggering timeout	2

System Error: System error log, 32-bit data ordered from HSB to LSB

Description	System Error [4 Byte]
Description	Bit 7	Bit 6	Bit 5	Bit 4	Bit 3	Bit 2	Bit 1	Bit 0
System Error [3]	Reserved
System Error [2]	Reserved						Err17	Err16
System Error [1]	Err15	Err14	Err13	Err12	Err11	Err10	Err9	Err8
System Error [0]	Err7	Err6	Err5	Err4	Err3	Err2	Err1	Err0

Err0: Reserved
Err1: Bit set to 1 (Coupler/IO module): Indicates the first boot, with no relevant data in memory Err2: Bit set to 1 (Coupler/IO module): Indicates memory exceeds the planned size

Err3: Bit set to 1 (Coupler/IO module): Indicates a Checksum error
Err4: Bit set to 1 (Coupler/IO module): Indicates boot failure
Err5: Bit set to 1 (IO module): Indicates that the power is not supplied to the load side of the IO module

Err6: Bit set to 1 (IO module): Indicates IO module over-voltage/over-current
Err7: Bit set to 1 (IO module): Indicates ADC read error in the analog module
Err8: Bit set to 1 (Coupler/IO module): Indicates memory write/erase operation failed

Err9: Bit set to 1 (Coupler): Indicates no saved station record in memory
Err10: Bit set to 1 (Coupler): Indicates the memory station record differs from the boot scan Err11: Bit set to 1 (Coupler): Indicates no module station number was detected in the boot scan Err12: Bit set to 1 (Coupler): Indicates communication timeout in Polling Mode for IO modules
Err13: Bit set to 1 (Coupler): Indicates station failure

Err14: Bit set to 1 (Coupler/IO module): Indicates data length in operating mode exceeds the set value
Err15: Bit set to 1 (Coupler): Indicates hot-swap function recovery failure
Err16: Bit set to 1 (Coupler): Indicates network initialization failure

Err17: Bit set to 1 (Coupler): Indicates register address exceeds the control range

Error Module (01-32) : Records IO module timeout information, 32-bit data ordered from HSB to LSB

Description	Error Module (01-32) [4 Byte]
Description	Bit 7	Bit 6	Bit 5	Bit 4	Bit 3	Bit 2	Bit 1	Bit 0
Module Error [3]	Slot32	Slot31	Slot30	Slot29	Slot28	Slot27	Slot26	Slot25
Module Error [2]	Slot24	Slot23	Slot22	Slot21	Slot20	Slot19	Slot18	Slot17
Module Error [1]	Slot16	Slot15	Slot14	Slot13	Slot12	Slot11	Slot10	Slot9
Module Error [0]	Slot8	Slot7	Slot6	Slot5	Slot4	Slot3	Slot2	Slot1

Slot1: IO module ID 1; Bit set to 1 indicates polling timeout for this module

Slot2: IO module ID 2; Bit set to 1 indicates polling timeout for this module
Slot3: IO module ID 3; Bit set to 1 indicates polling timeout for this module ：(and so on) ：
Slot32: IO module ID 32; Bit set to 1 indicates polling timeout for this module

Error Module (33-64) : Records IO module timeout information, 32-bit data ordered from HSB to LS

Description	Error Module (33-64) [4 Byte]
Description	Bit 7	Bit 6	Bit 5	Bit 4	Bit 3	Bit 2	Bit 1	Bit 0
Module Error [3]	Slot64	Slot63	Slot62	Slot61	Slot60	Slot59	Slot58	Slot57
Module Error [2]	Slot56	Slot55	Slot54	Slot53	Slot52	Slot51	Slot50	Slot49
Module Error [1]	Slot48	Slot47	Slot46	Slot45	Slot44	Slot43	Slot42	Slot41
Module Error [0]	Slot40	Slot39	Slot38	Slot37	Slot36	Slot35	Slot34	Slot33

Slot33: IO module ID 33; Bit set to 1 indicates polling timeout for this module
Slot34: IO module ID 34; Bit set to 1 indicates polling timeout for this module

Slot35: IO module ID 35; Bit set to 1 indicates polling timeout for this module ： (and so on) ：
Slot64: IO module ID 64; Bit set to 1 indicates polling timeout for this module

Serial Communication Parameters

Valid Mode Parameters

Serial Port Modes	Master	Slave	Free Port	Description
Function Parameters	Master	Slave	Free Port	Description
Communication Port	Port 1~3			RS485(Port 1,2), RS232(Port 3)
Serial Mode	●	●	●	Modbus RTU/ASCII Note 1
Transmission Format	●	●	●	Data bits: 7, 8 Parity bit: None, Odd, Even Stop bits: 1, 2
Baud Rate	●	●	●	1200 ~115200
Character Interval	●	●	●	1.5t~200t
Data Input Processing Mode	●			Retain last input value, clear input value
Data Output Mode	●			Polling, data change
Command Delay Time	●		●	Custom, default 100ms
Output Module Reset Time	●			Custom, default 0ms (disabled)
Output Module Control	●			Enabled/Disabled
Output Module Control Mode	●			Polling (continually active), rising edge trigger (single activation)
Power-on Output Module Control Mode	●			Enabled/Disabled
Command Reply Timeout	●		●	Custom, default 1000ms
Slave ID		●		Custom, default 1
Response Delay Time		●		Custom, default 50ms
Communication Return Mode			●	Automatic reporting, acknowledge mode

Note 1: ASCII Mode is currently not supported by the firmware version.

Function Parameter Description

(M/S/F) Operating Modes:
- Modbus Master: Used with virtual modules starting with SubM or SubMS_
- Modbus Slave: Used with virtual modules starting with SubS_ or SubMS
- Free Port Mode: Used with virtual modules starting with SubF_
(M/S/F) Communication Ports:
- Port 1: RS485 (labeled 1A.1B on the casing)
- Port 2: RS485 (labeled 2A.2B on the casing)
- Port 3: RS232 (labeled TX.RX on the casing)
(M/S/F) Serial Mode: Modbus Protocol Mode
- RTU
- ASCII
(M/S/F) Transmission Format:Supports eight modes based on data bits, parity bits, and stop bits.
- (N, 8, 1)
- (N, 8, 2)
- (E, 8, 1)
- (O, 8, 1)
- (E, 7, 1)
- (E, 7, 2)
- (O, 7, 1)
- (O, 7, 2)
(M/S/F) Baud Rate:Standard baud rate, default 9600bps.
- 1200 bps
- 2400 bps
- 4800 bps
- 9600 bps
- 14400 bps
- 19200 bps
- 38400 bps
- 57600 bps
- 115200 bps
(M/S/F) Character Interval:
Time interval for receiving packet data; T represents the time for a single character transmission, related to the baud rate, default is 3.5T.
- 1.5T
- 3.5T
- 5T
- 10T
- 10T
- 20T
- 50T
- 100T
- 200T
(M) Data Input Processing Mode:
Defines how input data is handled during a timeout while reading from devices. The default is to retain the last input value.
- Retain last input value
- Reset input value to zero
(8) (M) Data Output Mode:
In Master mode, this defines how the virtual output module sends commands.
- Polling Mode: Sends packets periodically
- Data Change: Sends write commands only when output data changes
(9) (M/F) Command Delay Time (ms):
Interval between Modbus command transmissions (from receiving a response packet from a device to sending the next command). Range: 1-65535 ms, default is 100ms.
(10) (M) Output Module Reset Time (ms):
If the CM111 module does not update data after the set time in communication with the coupler system, the output module control data will be set to 0.A setting of 0ms disables the reset function.
- 0: Function disabled
- Available range: 1-65535
(M) Output Module Control:
When it is necessary to control Modbus module commands, the content of SubM_Control_Output_xxDev should be used as a control value to determine whether the corresponding module sends commands for read/write control.
- Off
- On
(M) Output Module Control Mode:
The method used to control the output module. This control value is only valid when the output module control function is enabled.
- Polling (continually active)
- Rising edge trigger (single activation)
(M) Power-On Output Module Control Mode:
Sets the timing for when the output module sends commands.
- On: The CM111 module will send output module commands immediately after power stabilization.
- Off: The CM111 waits to send output module commands until communication control with the coupler is established.
(M/F) Command Reply Timeout (ms):
The time the master station waits for a response after sending a command to a slave device.Valid range: 1–65535 ms, default is 1000 ms.
(S) Slave ID:
When switching to Slave mode, this ID is the slave ID. The valid range is 1–247.
(S) Response Reply Time :
When switching to Slave mode, the time it takes for the module to respond after receiving a command. Valid range: 0–65535 ms, default is 50 ms.
(F) Communication Return Mode :
The module’s sending/receiving mode when switching to FreePort Mode.
- Autonomous Reporting: Displays received data in the configured virtual input module.
- Acknowledge Mode: Requires control of virtual output module commands (requests) via SubF_Control_Status to display received data in the configured virtual input module (response).

Virtual Module Settings and Descriptions

Master Mode
- Diagnostic Module
Module Status Input (SubMS_Status_xxDev): Available in four lengths: 08, 16, 24, and 32 Dev, each occupying 1, 2, 3, or 4 bytes of input space. Each bit corresponds to the index of a virtual module, with “0” indicating no error and “1” indicating an error in that module.
Module Error Code Input (SubMS_ErrorInfo_xxDev): Available in four lengths: 08, 16, 24, and 32 Dev, each occupying 8, 16, 24, or 32 words of input space. Each word contains an error message associated with a specific virtual module index, composed of the module’s function code and error code. Users can identify error causes based on these codes to determine corrective actions.

Master Error Codes
Error Code	Description	Solution
0x00	Operating normally	None
0xAA	Slave device timeout	Verify module serial port settings and connections to the slave device
0xXX	Slave device error code	Address issues based on the error codes from the slave device

Module Output Control (SubM_Control_Output_xxDev): Available in four lengths: 08, 16, 24, and 32 Dev, occupying 1, 2, 3, or 4 bytes of input space. Each bit acts as a control switch for a virtual module index. This setting takes effect only when the output module control function is enabled. In Polling Mode, when the control bit is set to 0, command transmission is disabled; when set to 1, command transmission is enabled. In rising-edge trigger mode, only the transition from 0 to 1 triggers command transmission.
Polling Time Input (SubM_Polling_Time): Occupies 3 words, representing polling times for Port1, Port2, and Port3.

Read Coil Module (SubS_Write_xxxBytes_01): Data length: 8 to 128 bytes

Read Discrete Coil Module (SubS_Write_xxxBytes_02): Data length: 8 to 128 bytes

Read Input Register Module (SubS_Write_xxxWords_04): Data length: 8 to 128 bytes

Read Holding Register Module (SubS_Write_xxxWords_03): Data length: 8 to 128 bytes

Write Coil Module (SubS_Read_xxxBytes_0F): Data length: 8 to 128 bytes

Supports Single Coil Writing (SubM_Write_xxxBits_05)

Write Holding Register Module (SubM_Write_xxxWords_10): Data length: 1 to 16 words

Supports single register writing (SubM_Write_xxxWords_06)

Slave Mode
- Diagnostic Module
Module Status Input (SubMS_Status_xxDev): Available in four lengths: 08, 16, 24, and 32 Dev, each occupying 1, 2, 3, or 4 bytes of input space. Each bit corresponds to the index of a virtual module, with “0” indicating no error and “1” indicating an error in that module.
Module Error Code Input (SubMS_ErrorInfo_xxDev): Available in four lengths: 08, 16, 24, and 32 Dev, each occupying 8, 16, 24, or 32 words of input space. Each word contains an error message associated with a specific virtual module index, composed of the module’s function code and error code. Users can identify error causes based on these codes to determine corrective actions.

Slave Error Codes
Error Code	Description	Solution
0x00	Operating normally	None
0x01	Invalid function code	Module does not support the current function code; refer to the relevant function code module.
0x02	Invalid data address	Data exceeds module address range; modify the data starting position or length.
0x03	Invalid data length	Incorrect data length; adjust to the correct length.
0x04	Incorrect or invalid virtual module configuration	Refer to the settings for the corresponding virtual module.

Read Coil Module (SubS_Write_xxxBytes_01): Data length: 1 to 128 bytes

Read Discrete Coil Module (SubS_Write_xxxBytes_02): Data length: 1 to 128 bytes

Read Input Register Module (SubS_Write_xxxWords_04): Data length: 1 to 64words

Read Holding Register Module (SubS_Write_xxxWords_03): Data length: 1 to 64 words

Write Coil Module (SubS_Read_xxxBytes_0F): Data length: 1 to 128 bytes

Write Holding Register Module (SubS_Read_xxxWords_10): Data length: 1 to 64

Free Mode
- Status Control Module (SubF_Control_Status):

Control and Status Module Data Definition
Data Direction	Data Name	Data Variable Name	Data Type	Byte Offset
Input Data	Send Control Feedback	TransControl	uint16_t	0
	Send Status Feedback	TransStatus	uint16_t	2
	Send Length Feedback	TransLenth	uint16_t	4
	Receive Count Value	ReceiveCount	uint16_t	6
	Receive Length	ReceiveLenth	uint16_t	8
	Error Count Value	ErrCount	uint16_t	10
Output Data	Output Control	SendControl	uint16_t	0
Output Data	Send Length	SendLenth	uint16_t	2

Input Data Module (SubF_Read_xxxWords): Data length: 1 to 64 words

Output Data Module (SubF_Write_xxxWords): Data length: 1 to 64 words

Diagnostic Module

Appendix I: i-Designer Instructions

Installation

Download the i-Designer program from the official website, then click on the program (as shown in the figure) to install it.

After reading the user agreement, please check the box and click Start Installation.

During installation, the progress will be displayed.

Once the software installation is complete, you can choose to run it immediately by clicking the Finish button.

UI Screen Description

After installation, locate the program icon on the desktop and click it to open the settings screen (see the figure below).

The screen is organized as follows, from top to bottom:

Tab Area: Select different product series or switch languages.
Function Key Area: Displays different function keys based on the selected tab.
Display and Configuration Area: Shows the module status and settings.
Progress Display Area: Displays the progress of various functions in percentages, helping users understand the current execution status, such as configuration or updates.

Tab Area:

Homepage Tab: Provides information about i-Designer and options for switching the language.
Product Settings Tab: Used for setting parameters for variousproduct series.

Function Key Area:
The function keys displayed here vary based on the selected tab and product. The relevant descriptions are as follows:

i-Designer Information Verification

Click on the homepage -> About i-Designer

Language Settings

i-Designer currently supports three languages: Traditional Chinese, Simplified Chinese, and English. Use this feature to change the language.

COM Port Connection Settings

i-Designer communicates with thecoupler module primarily through the COM Port interface. Connection modes include automatic module search mode and manual COM Port connection mode.

Before setting up a custom connection with the, please confirm the COM Port number assigned to the coupler module to proceed with configuration.

Connection Setting Instructions

Once the connection is successful, the current connection mode will be displayed in the window, and the firmware version of all modules will be detected. If the system is running, a pop-up window will ask whether to stop the system to perform firmware version detection for all modules.

Only after the system is stopped can the module functions be configured.

When connecting to X series modules, if the listed modules do not match the actual modules, you can search for modules through the Auto Station Assignment function.

After configuring the module functions, you must click “Upload Parameters” to save the settings correctly.

You can view the IO point status through the online debugging feature.
Note: You must disconnect from the external master station before proceeding.