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4. FUNCTIONS
4.8
Timing Chart
(1) When a request is output by the AJ71PB96F/A1SJ71PB96F:
This is shown when the request area No. 1 is used.
A minimum of 30ms is required from when Y00 turns on to when the data is actually transmitted.
A minimum of 30ms is required from when Y00 turns off till the X00 turns off.
Leave Y00 on until reading of the answer area and data area is completed.
The command is set in request area No. 1 by the PC CPU's TO instruction.
When necessary it is set in the request area No. 1.
Y00 is turned on to notify the AJ71PB96F/A1SJ71PB96F that the command ha
been set.
The PC CPU waits for an answer from the AJ71PB96F/A1SJ71PB96F.
After X00 is turned on, if necessary the FROM instruction is read from the answer
area No. 1 and data area No. 1.
Y00 turns off.
Request issued
Y00
Answer area and data area
setting complete
X00
FROM/TO
TO
Request
area set
TO
FROM
Data area set
Answer
area read
4-23
MELSEC-A
Request canceled
FROM
Data area
read
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