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
12.3.1.2 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 "High-speed M function finish" signal process and make the signal's
logic level the same as of the strobe signal. If a miscellaneous command is issued in the next block or later until the strobe
signal and the "High-speed M function finish" signal become the same logic level, the status will be in "completion standby".
The operation sequence where the "High-speed M function finish" signal is used is introduced below.
Operation sequence when the previous miscellaneous command is completed
 In the case where a miscellaneous command output is not waited
The program proceeds to the next block after outputting the "M function strobe" signal.
Machining program
M code data
NC PLC
Strobe
(MFn)
PLC NC MFINn
Designated M function process
Mxx
Next block
Mxx code data
479
Myy
Next block
Myy code data
IB-1501668-B