9
.
Program
41
●Send/Receive messages
Overview of send/receive messages
S: Relation between the first command word (CMND instruction operand) and the send
messages
D: Relation between the receive messages and the first response word (CMND instruction
operand)
Additional Information
Silent interval: Waiting time to recognize the first frame using the Modbus-RTU
communication. During the reception standby, the first received data is deemed as the first
byte of frame after the waiting time of 3.5 characters with actual baud rate.
Additional Information
Error check: 16-bit data is expressed with two 8-bit data for the Modbus-RTU communication.
Error check result is calculated by the calculation formula called CRC (Cyclical Redundancy
Check).
Содержание CJ2*-CPU Series
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