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PLC Communication Settings
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M2M Gateway PLC Communication Settings
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67
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9.
Modbus/RTU Connection
The following is a setting example for communication with Modbus/RTC support device.
This example describes how to install the Modbus simulator software on the viewing terminal for
checking the connection.
See below for the configuration example regarding communication conditions.
Device Connection Example
A connection example between the viewing terminal and the M2MGateway is illustrated below.
In this example, the USB/RS-485 converter is used to connect the viewing terminal and
the M2MGateway.
As for COM port number on Windows, check it in the "Control Panel" - "Device Manager".
- M2M Gateway
-Viewing and simulator terminal
IP address : 1
0
.1.1.200
Subnet mask : 255.0.0.0
IP address : 10.1.1.101
Subnet mask : 255.0.0.0
Device type : HoldingResister
Access range : 03E9h - 03F2h
Access cycle : 1 sec
Device type : Coil
Access range : 03E9h - 03F2h
Access cycle : 500 ms.
Modbus/RTU
*RS-485
Ethernet
*for viewing and settings
Modbus
Simulator
Modbus
Simulator
■
RS-485/USB converter
As for COM port number on
Windows, check it in the Device
Manager.
RS-485 lines
■DIP switch setting
Full duplex Terminator ON