Modbus OPC Server R2018
User guide
 
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  • 2. Channels

2. Channels

 
Channels are Modbus Master instance created to poll/collect data from field devices. Channels support all Modbus protocols and make it easy to get up and running fast.
 
 
These are some of the features supported:
Multiple Sockets Support:
When using multiple Ethernet socket the server will position the necessary socket based on the device IP address, to poll information from. Once all requests are completed and the driver moves to the next device the driver will then reposition to the socket pertaining to the device IP.
 
Enron Modbus Support:
When Modbus Enron is selected only float, int32, double, and int64 data type will use this format. Enron registers are to be read and written as two continuous 16bit registers. When you request a float data type or an Int32 from a Enron Modbus device, the device will return 4 bytes per registers, two 16bit values.
 
Supported Modbus Functions:
1. Function 0x01 (Read Coils)
2. Function 0x02 (Read Input)
3. Function 0x03 (Read Holding Registers)
4. Function 0x04 (Read Input Registers)
5. Function 0x05 (Write Single Coil)
6. Function 0x06 (Write Single Register)
7. Function 0x15 (Write Multiple Coils)
8. Function 0x16 (Write Multiple Registers)