Operation Sequence For Normal Method; Operation Sequence Which Waits For A Finish Signal From The Plc During Miscellaneous Command Performance; Operation Sequence Which Does Not Wait For A Finish Signal From The Plc During Miscellaneous Command Performance - Mitsubishi Electric M800VW Series Programming Manual

M800V/M80V Series PLC Programming Manual (2/2)
12 Handling of M, S, T, B Functions
12.3 Miscellaneous Command High-Speed Output

12.3.2 Operation Sequence for Normal Method

12.3.2.1 Operation Sequence Which Waits for a Finish Signal from the PLC During
Miscellaneous Command Performance
Refer to "12.2 Miscellaneous Function Finish".
12.3.2.2 Operation Sequence Which Does Not Wait for a Finish Signal from the PLC
During Miscellaneous Command Performance
When a miscellaneous command (M, S, T or B), which is set not to wait for a finish signal with the parameter (#1401 to
#1418), is issued in a machining program, the NC outputs the miscellaneous command code data and the "M function strobe"
signal towards the PLC. As soon as the NC outputs the "M function strobe" signal, it completes the miscellaneous command
process and proceeds to the next block.
In the sequence process, it is necessary to perform the "FIN1" signal process or the "FIN2" signal process and make the NC
turn OFF the strobe signal. If a miscellaneous command is issued in the next block or later until the strobe signal turns OFF,
the status will be in "completion standby".
Operation sequence with the "M function finish 1" signal (FIN1) for completing a miscellaneous com-
mand
The operation sequence where the "FIN1" signal is used is introduced below.
It is essential to program a sequence process that turns OFF the "FIN1" signal after ensuring an inactivation of the strobe
signal.
 In the case when completed by "FIN1"
The program proceeds to the next block after outputting the "M function strobe" signal. (It is the same as when "FIN2" is
enabled).
Machining program
M code data
NC PLC
Strobe (MFn)
PLC NC FIN1
Designated M function process
Mxx
Next block
Mxx code data
481 IB-1501668-B