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3.3 I/O Signals to the Programmable Controller CPU
3.3.2 Functions of I/O signals
3
SPECIFICATIONS
(7) Blown fuse detection flag (X1F)
• Turns ON when a fuse blown of the external coincidence output part is detected.
• Even if the fuse is blown, the signal does not turn ON unless a voltage is applied
to the external coincidence output power supply terminal.
• For actions when a fuse is blown, refer to Section 8.1.4.
.
Figure 3.12 Operation of the blown fuse detection flag (X1F)
(8) Coincidence signal No.1 reset command (Y01), coincidence signal No.2
reset command (Y02)
• Use the signals for the coincidence output function. (Refer to Section 5.3.1.)
• Turn ON the coincidence signal No.1 reset command (Y01) to reset the counter
value coincidence No.1 (X02).
• Turn ON the coincidence signal No.2 reset command (Y02) to reset the counter
value coincidence No.2 (X05).
• Turn OFF the signal after the resetting is completed.
(9) Coincidence output enable command (Y03)
• Use the signal for the coincidence output function. (Refer to Section 5.3.1.)
• Turn ON the coincidence output enable command (Y03) to enable output from
the coincidence output No.1 terminal (EQU1) and the coincidence output No.2
terminal (EQU2) of the external device connector when the count value coincides
with the comparison point.
Figure 3.13 Operation of the coincidence output enable command (Y03)
0
860
OFF
ON
OFF
ON
ON
Operation by the QD64D2
External coincidence output
power supply terminal
External coincidence output
part fuse status
Blown fuse detection flag
(X1F)
Error code
(Un\G18)
Error occurrence
(X0D)
Normal
Fuse blown
OFF
ON
ON
ON
ON
ON
OFF
OFF
Operation by the QD64D2
Counter value coincidence No.1
(X02)
Counter value coincidence No.2
(X05)
Coincidence output enable command
(Y03)
Coincidence output No.1 terminal
(EQU1)
Coincidence output No.2 terminal
(EQU2)