I/O Signal Detail Description - Mitsubishi A1SJ71PB92D User Manual

4. FUNCTIONS
4.2.2
(1) Exchange start request signal (Y00), exchange start end signal (X00)
(a) After the exchange start request signal (Y00) is turned on by the sequence program the
(b) The exchange start end signal (X00) turns off in either of the following cases.
Exchange start request signal (Y00)
Exchange start end signal (X00)
(c) An interlock is used for FROM/TO of the I/O data.
(d) Before the exchange start request signal is turned on the output data initial value must be
(2) Communication trouble detection signal (X01), communication trouble detection signal
reset (Y01)
(a) The communication trouble detection signal (X01) is turned on when a communication
(b) The communication trouble detection signal (X01) is turned off when the communication
(c) The communication trouble detection signal reset (Y01) is turned off by the sequence
(d) The following sequence is used.
Communication trouble detection signal reset (Y01)
Communication trouble detection signal (X01)

I/O signal detail description

exchange start end signal (X00) is turned on when cyclic exchange starts.
• When the exchange start request signal (Y00) is turned off
• When the parameters are written from the configurator to the AJ71PB92D/A1SJ71PB92D
written to the buffer memory.
trouble occurs. At the same time the RSP ERR.'s LED turns on. At this time the error code
and detailed data are stored in the buffer memory communication trouble area.
trouble detection signal reset signal (Y01) is turned on from the sequence program or when
communication failure is all resolved. At this time, the RSP ERR. LED is turned off.
program after it has been confirmed that the communication trouble detection signal (X01)
has been turned off.
FROM/TO
Exchange start
request
Exchange start end
Trouble detection reset
Trouble detection
The error code is read from the buffer memory to the PLC CPU.
4-6
MELSEC-A
Maximum 200 ms
Exchange
FROM