Procedures before operation
MELSEC-WS
122
*1 C device is used to check the operation of the communication program.
For details of data transmission and reception processing in a program for
reading input data sets in polling mode, refer to Section 8.2.2 (2).
Since the QJ71E71-100 treats application data in Little Endian format, the byte-
order needs to be swapped. Note that the byte order of the input data set 1 and
output data set 1 does not need to be changed because these data are one byte
long.
<Data need to be swapped>
Command and parameters (word data (16 bits))
Input data set 2 and 3 (double-word data (32 bits))
C device
*1
C0 Open
instruction
Number of executions
C1
Number of successes
C2
Number of failures
C10 BUFSND
instruction
Number of executions
C11
Number of successes
C12
Number of failures
C20 BUFRCV
instruction
Number of executions
C21
Number of successes
C22
Number of failures
C31 Verification
check
Number of successes
C32
Number of failures
C33
Number of response errors (writing)
C40 Close
instruction Number of executions
C41
Number of successes
C42
Number of failures
Содержание Melsec WS Series
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