4. FUNCTIONS
MELSEC-A
4-25
(3) When network trouble is detected:
Y04
X04
FROM/TO
FROM
X04 is turned on to notify the PC CPU that network trouble was detected in
the AJ71PB96F/A1SJ71PB96F.
The PC CPU uses the FROM command to read the network trouble
information area and then Y04 is turned on to notify the AJ71PB96F/
A1SJ71PB96F that the read has ended.
The AJ71PB96F/A1SJ71PB96F turns off.
The PC CPU turns off Y04.
Network trouble information
area read end
Read end reset
Network trouble
detection
Network trouble information read out