DAUDIN AH500 iO-GRIDM Modbus RTU Connection User Manual
- October 30, 2023
- DAUDIN
Table of Contents
DAUDIN AH500 iO-GRIDM Modbus RTU Connection
Product Information
The 2302EN V2.0.0 and AH500 Modbus RTU Connection Operating Manual provides information on the remote I/O module system configuration list and AH500 connection setup. The remote I/O module system includes a master Modbus RTU, digital input, digital output, power supply, and interface module. The interface module is used externally to convert AH500 RS485’s communication port (Modbus RTU) to an RJ45 connector. The main controller manages and configures I/O parameters. The power module and interface module are standard for remote I/Os, and users can choose the model or brand they prefer.
Product Usage Instructions
Remote I/O Module System Configuration List
To use the remote I/O module system, refer to the following list:
| Part No. | Specification | Description |
|---|---|---|
| GFMS-RM01S | Master Modbus RTU, 1 Port | Main Controller |
| GFDI-RM01N | Digital Input 16 Channel | Digital Input |
| GFDO-RM01N | Digital Output 16 Channel / 0.5A | Digital Output |
| GFPS-0202 | Power 24V / 48W | Power Supply |
| GFPS-0303 | Power 5V / 20W | Power Supply |
| 0170-0101 | 8 pin RJ45 female connector/RS-485 Interface | Interface Module |
AH500 Connection Setup
Follow these instructions to connect the AH500 with iO-GRIDM using the ISPSoft program:
AH500 Hardware Connection
- Locate the connection port on the top of the machine.
- Using AHCP510-EN with COM1 (RS232 pin) for demonstration, connect COM(RS485 1/6 pin) to the interface module (1/2) to convert it into an RJ45 connector, which will be connected to the main controller.
AH500 Connection Setup
-
Launch ISPSoft, create a new file and double-click HWCONFIG on the project management section on the left to enter the configuration page.
-
Right-click on the PLC icon and select Summary under Hardware Configuration.
-
Click on Communication Port and set COM1’s communication settings to RS-485, 115200bps, 8 data bits, None parity, and 1 stop bit (115200, 8,N, 1). The communication parameter setting must be consistent with iO-GRID M to enable communication.
-
Use the MODRW command to set up the reading/writing of
iO-GRID’s I/O module Reading/Writing:- S1: Connected device addresses: K1~K254
- S2: Communication function code
- S3: The address where data will be read/written
- S: The register where the data to be read/written is stored
- N: Length of the data to be read/written
-
iO-GRID M’s first GFDI-RM01N has the register address at 1000(HEX), and iO-GRID M’s first GFDO-RM01N has the register address at 2000(HEX).
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Refer to the programming example provided in the manual for communications and using RS485 communication to read/write the iO-GRID M module.
Right click on the PLC icon and select “Summary” under “Hardware
Configuration” 
For this demonstration, click on “Communication Port” and set COM1’s
communication settings to RS-485, 115200bps, 8 data bits, None parity and 1
stop bits (115200, 8,N, 1).
The communication parameter setting must be consistent with M to enable communication
Use the MODRW command to setup the reading/writing of iO-GRID ’s I/O
module
- iO-GRID M ’s first GFDI-RM01N has the register address at 1000(HEX)
- iO-GRID M ’s first GFDO-RM01N has the register address at 2000(HEX)
Programming Example:
This example is for communications and using RS485 communication to
read/write iO-GRID M module
