DAUDIN iO-GRIDm and SIEMENS PLC Modbus RTU Connection User Manual

DAUDIN iO-GRIDm and SIEMENS PLC Modbus RTU Connection

Product Information

The product is a remote I/O module system with Siemens PLC Modbus RTU connection. It includes various components such as a master Modbus RTU controller, digital input and output modules, power supplies, and interface modules. The main controller is responsible for managing and configuring I/O parameters. The power module and interface module are standard components that can be chosen based on user preference.

Remote I/O Module System Configuration List

Product Usage Instructions

Siemens S7-200 Smart Connection Setup
To connect the Siemens S7-200 Smart to the remote I/O module system, follow these steps:

Siemens S7-200 Smart Hardware Connections

1. The connector is located at Port 0 of the CPU module and uses RS485 connections.
2. Connect the RS485 (Signal B) pin (Pin No.3) of the S7-200 Smart to the RS485 (Signal B) pin (Pin No.2) of the interface module.
3. Connect the RS485 (Signal A) pin (Pin No.8) of the S7-200 Smart to the RS485 (Signal A) pin (Pin No.1) of the interface module.
4. Connect the RTS (TTL) pin (Pin No.4) of the S7-200 Smart to the Selects 10 bit communication protocol pin (Pin No.9) of the interface module.
5. Connect the Logic common port pins (Pin No.2 and Pin No.5) of the S7-200 Smart to the Connect or shell and Case grounding respectively.
6. Connect the D-Sub cable from the interface module (DM09-AP02CL) to the serial port 0 on the S7-200 Smart.
7. Connect the interface module (0170-0101) to the terminal block using a twisted pair cable.
8. Connect an Ethernet cable to the interface module to establish communication with the S7-200 Smart.

Siemens S7-200 Smart Connection Setup

1. Launch Step7-MicroWINSMART program.
2. Click on Commands > Bases > Modbus RTU Master menu.
3. Click to add a new MBUS_CTRL.
4. Configure the communication protocol settings including enable bits, Modbus mode, baud settings, and parity check.
5. Select the appropriate port (Port 0 for CPU’s RS485 port or Port 1 for communication module port).

Remote I/O Module System Configuration List

Product Description

1. The interface module can convert the S7-200 Smart’s RS485 port into a RJ45 connector.
2. The main controller is in charge of the management and dynamic configuration of I/O parameters and so on.
3. The power module and interface module are standard for remote I/Os and users can choose the model or brand they prefer.

Siemens S7-200 Smart Connection Setup

This chapter explains how to use the Step7-MicroWINSMART progam to connect S7-200 Smart to io-GRIDm.For detailed information, please refer to the S7-200 Smart Series Manual

Siemens S7-200 Smart Hardware Connections

The connector is at Port 0 of the CPU module. and uses RS485 connections

or shell

| Case grounding

Notes:
RS485 connection: Pin No.3—RS485 (Signal B) (+); Pin No.8—RS485 (Signal A) (-)

Connect the seriail port 0 on S7-200 Smart to the interface module (DM09-AP02CL) via a D-Sub cable. Connect the terminal block on the interface module to interface module (0170-0101) via a twisted pair cable with an Ethernet cable connecting it to io-GRIDm ’s port

Siemens S7-200 Smart Connection Setup

1. Launch Step7-MicroWINSMART and click on “Commands” on the right side of the program
   • Click on the “Commands” menu
   • Click on the “Bases” menu
   • Click on the “Modbus RTU Master” menu
   • Click to add a new “MBUS_CTRL”
2. Communication protocol settings
   Names & Definitions | Names| Function
   ---|---|---
   A| EN| Enable Bits
   B| Mode| With the mode set to “1”,

it is set to the Modbus protocol

C| Baud| Baud Settings

D

|

Parity

| Check

=0 (No check)

=1 (odd parity check)

=2 (even parity check)

E

|

Port

| Serial Port Settings:

“0” represent CPU’s RS485 port

“1” representsthe communication module port

F| Time| Timeout settings (ms)
G| Done| Completed bits
H| Error| Error Code

3. Command Memory Configurations
   • Click on the “Memory” menu
   • Set up a command’s starting address and once finished, click on “Confirm”
4. Reading of the communication register
   Names & Definitions | Names| Function
   ---|---|---
   A| EN| Enable Bits
   B| First| Every command must be triggered with a pulse
   C| Slave| Control modules’ station numbers
   D| RW| Read/Write     setting,     with     “0” representing “Read”

E

|

Addr

| Slave Station Number

The input module is set to “44097”, and Modbus 0X03 command

F| Count| Data count
G| Data| Address where the data is stored
H| Done| Completed bits
I| Error| Error Code

5. Writing of the communication register
   Names & Definitions | Names| Function
   ---|---|---
   A| EN| Enable Bits
   B| First| Every command must be triggered with a pulse
   C| Slave| Control modules’ station numbers
   D| RW| Read/Write     setting,     with     “1” representing “Write”

E

|

Addr

| Slave Station Number,

the input module is set to “48193”, Modbus 0X06 and 0X10 commands

F| Count| Data count
G| Data| Address where the data is stored
H| Done| Completed bits
I| Error| Error Code

Notes:

• io-GRIDm ’s first GFDI-RM01N has the register address at 1000(HEX) converted to 4096(DEC)+1 and the starting address at 44097
• io-GRIDm ’s first GFDO-RM01N has the register address at 2000(HEX) converted to 8192(DEC)+1 and the starting address at 48193

Sample Program

Control with one GFDI-RM01N and one GFDO-RM01N
When the first point of DI has received a signal and is triggered, the first point of DOwill output a signal as it is connected

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