LSIS XBE-DC08A, User Manual

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Chapter 2 Built-in Cnet communication
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2.4.4 Modbus Client Service
Modbus protocol is specified open protocol used between client-server, which executes reading/writing data according to
function code. Communication between devices that use Modbus protocol uses Client-server function in which only one
client processes the data.
1) Channel setting
Cnet I/F module is available to define driver type for P2P service about each channel. However, active mode in the
standard settings should be set as “Use P2P settings”.
2) P2P block setting
There are two commands; Write (writes memory of self station to destination station’s memory area) and Read (reads
memory of destination memory and saves it in the memory area of self station)
Setting methods of both RTU and ASCII clients are same.
① ② ③ ④ ⑤ ⑥ ⑦ ⑧ ⑨
No. Type Block type Meaning
1 Channel Driver name changes according to driver set in the P2P Driver.
2
P2P
function
1. Read : when reading the destination station’s memory
2. Write: when writing self-station’s memory to destination station’s
memory.