APPENDICES
Appendix 1 Dedicated Instructions
Appendix 1.2 G(P). PPCVRD
App
- 3
APP
ENDIX
INDE
X
(1) Function
(a) Reads the periodic pulse count value.
(b) When reading the periodic pulse count value with the G(P).PPCVRD instruction,
consistency between the previous periodic pulse count value and the present
periodic pulse count value is retained. (Refer to Section 5.5.)
(c) Completion device (D) and completion status indication device (D) +1 are
available for the interlock signal of the G(P).PPCVRD instruction.
1) Completion device
2) Completion status indication device
Figure App.2 Timing chart of the G(P).PPCVRD instruction
(d) If the channels differ, the G(P).PPCVRD instructions can be executed
concurrently. For example, the G(P).PPCVRD1 instruction and G(P).PPCVRD2
instruction can be executed concurrently.
(e) The G(P).PPCVRD instruction can be executed while the module READY signal
is ON. If executed while the signal is OFF, the instruction is ignored.
(2) Error
There are no errors regarding the instruction.
Turns ON at END processing in the scan where the G(P).PPCVRD
instruction is completed, and turns OFF at the next END processing.
Turns ON/OFF according to the status on completion of the G(P).PPCVRD
instruction.
Normal completion: Remains OFF.
Error completion: Turns ON at END processing in the scan where the
G(P).PPCVRD instruction is completed, and turns OFF at the next END
processing.
Sequence program
END
processing
END
processing
END
processing
END
processing
ON
OFF
ON
OFF
ON
OFF
Completion device (D)
Completion status
indication device (D) + 1
Error
completion
Normal
completion
1 scan
Completion of the G(P).PPCVRD instruction
G(P).PPCVRD instruction