Mitsubishi Electric M800VW Series Programming Manual page 503

M800V/M80V Series PLC Programming Manual (2/2)
12 Handling of M, S, T, B Functions
12.3 Miscellaneous Command High-Speed Output
Operation sequence with the "M function finish 2" signal (FIN2) for completing a miscellaneous com-
mand
The operation sequence where the "FIN2" signal is used is introduced below.
It is essential to program a sequence process that turns OFF the "FIN2" signal after ensuring an inactivation of the strobe
signal.
 In the case when completed by "FIN2"
The program proceeds to the next block after outputting the "M function strobe" signal. (It is the same as when "FIN1" is
enabled).
Machining program
M code data
NC PLC
Strobe (MFn)
PLC NC FIN2
Operation sequence where a series of miscellaneous commands are issued and when a previous mis-
cellaneous command is not completed
When a miscellaneous command is output with the method that does not wait for a finish signal from the PLC, if the previous
miscellaneous command (M, S, T or B) is not completed, a completion of the previous miscellaneous command will be waited
and then a new command code and a strobe signal will be output.
The operation sequences for "FIN1" and "FIN2" are shown below.
 In the case where a miscellaneous command output is waited (When "FIN1" is used)
The program proceeds to the next block when the previous miscellaneous command is completed. (Falling edge of FIN1)
Machining program
M code data
NC PLC
Strobe (MFn)
PLC NC FIN1
IB-1501668-B
Mxx
Next block
Mxx code data
Myy
Mxx
Mxx code data
Mxx strobe
482
Next block
Myy code data
Myy strobe