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4. FUNCTIONS
4.6
I/O Signal List
The configuration of the I/O signal to be used to receive and send data with AJ71PB96F/
A1SJ71PB96F and the PC CPU is shown below.
Signal direction: AJ71PB96F/A1SJ71PB96F
Device No.
X00
X01
X02
X03
X04
X05
X0C
X0D
X0E
X1A
X1B
X1C
X1D
X1E
X1F
Remark
• WDT: Watchdog timer
• The Y unused area can be used in place of the internal relay M.
• Refer to the PC CPU User's Manual for information regarding the relationship between the I/O
No. and slot.
• UCS: Unconfirmed Service
(1) A request process end signal (X00 to X02) and the request request signal (Y00 to Y02) are
used as the handshake signals when the PC CPU matches PROFIBUS communication.
Refer to the Section covering the usage method. X03 and Y03 are used as unconfirmed
service receive only.
(2) PROFIBUS I/F communication Ready signal (X1B)
This is turned on when the AJ71PB96F/A1SJ71PB96F communication preparation ends. Program
the PC CPU so that this signal turns on when PROFIBUS communication is conducted.
(3) PROFIBUS I/F error signal (X1C)
This turns on when the AJ71PB96F/A1SJ71PB96F detects an error.
Description
Request process end signal (Area No. 1)
Request process end signal (Area No. 2)
Request process end signal (Area No. 3)
UCS receive signal (Receive only area)
Network trouble signal
Usage not possible
PROFIBUS-FMS I/F WDT error signal
Usage not possible
PROFIBUS-FMS I/F communication
Ready signal
PROFIBUS-FMS I/F error signal
PROFIBUS-FMS I/F module Ready signal
Usage not possible
4-17
→ → → →
PC CPU
Signal direction: PC CPU
Device No.
Y00
Y01
Y02
Y03
Y04
Y05
Y06
Y07
Y0F
Y10
Y11
Y19
Y1A
Y1F
MELSEC-A
→ → → →
AJ71PB96F/A1SJ71PB96F
Description
Request request signal (Area No. 1)
Request request signal (Area No. 2)
Request request signal (Area No. 3)
UCS read end signal (Receive only area)
Network trouble read out end signal
Usage prohibited because used by system
Unused
Usage not possible
Unused
Usage prohibited because used by the
system
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