Miscellaneous Command High-Speed Output - 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 Miscellaneous Command High-Speed Output
The miscellaneous command high-speed output shortens a processing time per miscellaneous function. There are two
functions that can be selected individually.
 Change miscellaneous command completion method
Select one of the following methods by the parameter.
 High-speed method (parameter "#1278 ext14/bit1" to 1):
The controller inverts a strobe signal logically at the time of outputting a miscellaneous command. The PLC performs the
designated operation and logically inverts the high-speed miscellaneous function finish signal (MFIN1 to 4, SFIN1 to 6,
TFIN1 to 4, BFIN1 to 4). The controller completes the miscellaneous function when the strobe signal and the high-speed
miscellaneous function finish signal become the same logic level.
 Normal method (parameter "#1278 ext14/bit1" to 0):
Conventional method (Refer to "12.2 Miscellaneous Function Finish" for details.)
 Selecting miscellaneous command completion method
Select whether or not to wait for a finish signal from the PLC using the parameter.
 M command (parameter "#1401 M_mode")
0: Does not wait for the registered M code (M code registered to the parameters #1411 to #1418) to complete.
As for the other M codes, it waits for the complete.
1: Waits for the registered M code to complete, but not wait for the other M codes to complete.
As for the other M codes, it does not wait for the complete.
 S command (parameter "#1402 S_mode")
0: Waits for the completion signal from the PLC.
1: Does not wait for the completion signal from the PLC.
 T command (parameter "#1403 T_mode")
0: Waits for the completion signal from the PLC.
1: Does not wait for the completion signal from the PLC.
 2nd miscellaneous command (parameter "#1404 M2_mode")
0: Waits for the completion signal from the PLC.
1: Does not wait for the completion signal from the PLC.
CAUTION
If the method of not waiting for the completion signal is selected for miscellaneous command completion type, the
next block may be executed while the miscellaneous command is incomplete.
When an axis move command is inserted in the next block of an auxiliary command, the operations that are physi-
cally impossible to be simultaneously performed are performed, and unexpected operations such as the interfer-
ence between an external source operated by the auxiliary command and a moving axis will occur.
475 IB-1501668-B