DAUDIN Delta PLC Modbus RTU Connection User Manual

June 9, 2024
DAUDIN

DAUDIN logo Delta PLC Modbus RTU Connection
User ManualDAUDIN Delta PLC Modbus RTU Connection 2302EN
V1.0.0

DAUDIN logo and Delta PLC
Modbus RTU Connection
Operating Manual

Remote I/O Module System Configuration 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

1.1 Product Description
I. The interface module is used externally to convert Delta PLC RS485’s communication port (Modbus RTU) to a RJ45 connector
II. The main controller is in charge of the management and dynamic configuration of I/O parameters and so on.
III. The power module and interface module are standard for remote I/Os and users can choose the model or brand they prefer.

Delta PLC Connection Setup

This chapter explains how to use the ISPSoft program to connect Delta PLC with DAUDIN logo.
For detailed information, please refer to ISPSoft User Manual
2.1 Delta PLC Hardware Connection
I. The connection port is at the bottom of the machine. Using DVP-14SS2 for demonstration, connect Port 2(RS485 A/B) to the interface module (1/2) to convert it into a RJ45 connection, which will be connected to the main controller.DAUDIN Delta PLC Modbus RTU Connection - Hardware
Connection 2.2 Delta PLC Connection Setup
I. Launch ISPSoft and set COM2’s communication settings to the RTU mode, 115200bps, 8 data bits, None parity and 1 stop bits (115200, 8,N, 1). Programming Example:
DAUDIN Delta PLC Modbus RTU Connection - parameter※The communication parameter setting must be consistent with DAUDIN logoto enable communication
II. Use the MODRW command to setup the reading/writing of DAUDIN
logo’s I/O module
DAUDIN Delta PLC Modbus RTU Connection - parameter 1S1: 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 tored
N: Length of the data to be read/written
DAUDIN logo ’s first GFDI-RM01N has the register address at 1000(HEX)
DAUDIN logo ’s first GFDO-RM01N has the register address at 2000(HEX)
※Note: When using the read command, please use register D1296 to start using the stored data
Use the “read” command above to set up D200 to read 2 registers with first point of DI as the example.

Register DATA Description
D200 (Low- order byte) “0” ADR 1 ADR 0
D200 (Highoder byte)
D201 (Low- order byte) CM D 3

C MD 0
D201 (High- order byte)| “3”
D202 (Low- order byte)| 44044| Data Bytes
D202 (High- order byte)| “2”
D203 (Low- order byte)| 44044| Content at the address 2100 I-1| PLC will automatically convert ASCII
characters into values and store them at D1296=H0001
D203 up| 4,019
D204 down| 44044
D204 up| 4414,
D205 down| 440,4| Content at the address 2101 1-1| PLC will automatically convert ASCII
characters into values and store them at D1297=1-10000
D205 up| 44044
D206 down| 4404,
D206 up| 440,4|
D207 down| LRC CHK 1|
D207 up| LRC CHK 0

Based on this table, users can use D1296 register to read the entire data (Word).
III.  rogramming Example:
This example is for communications and using RS485 communication to read/writeDAUDIN logo module
DAUDIN Delta PLC Modbus RTU Connection - parameter 2 DAUDIN Delta PLC Modbus RTU Connection - parameter
3

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