The Modbus IP Slave mode is used to connect one or more IP ports to the Internal Registers. The IP ports can use Modbus TCP, Modbus via TCP, and Modbus via TCP.
The external devices connected to the IP ports are modbus masters and the IP100 acts as a modbus slave.
A connection between an IP port and Internal Registers is configured using a row in the form. The connection is enabled using the first check box.
The configuration parameters are:
Protocol | Type of modbus and transport method to use. |
Count | Number of simultaneous connections. |
IP Port | IP port number. It is best to use 1024 and above since lower numbers are well-known ports. |
RTU ID | Modbus address. |
The example in this figure shows many IP masters with various protocols accessing Internal Registers. The RTU ID on the form is set to 1 and enabled using the check box.