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5
FUNCTIONS
1)
Repeat interval timer expires.
2)
QJ71MT91 sends a request message
to the slave.
3)
Response monitoring timer starts.
4)
5)
Response monitoring timer stops.
6)
Corresponding bit of Automatic
communication operation status turns
off. (0: Normal is set)
7)
Repeat interval timer starts.
5 - 6
(c) Automatic communication operation flowchart
Using the set automatic communication parameters, the automatic
communication function operates according to the repeat interval timer and
response monitoring timer settings as shown below.
Slave's response condition
For normal response
QJ71MT91 receives a response
message from the slave.
For exception response
8)
Response monitoring timer expires.
9) Corresponding bit of Automatic
communication operation status turns
on. (1: Error is set)
MELSEC-Q
5 - 6
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