Coordinate Position Check - Mitsubishi Electric M800VW Series Programming Manual

M800V/M80V Series PLC Programming Manual (2/2)
14 PLC Help Function
14.8 High-Speed Simple Program Check

14.8.4 Coordinate Position Check

This function is used to confirm that machine positions match for the operation start and end times of processing programs
when creating processing programs with reduced execution times by omitting reference point returns through the alignment of
operation start positions, or when creating the same workpiece by continuously repeating the same program.
Differences between coordinate positions (workpiece coordinate position and command-machine coordinate position) at the
start and end times of processing programs can be checked when the NC reset signal is input during the high-speed simple
program check.
The coordinate position check is executed when the high-speed simple program check and coordinate position check enabled
signal (X713) is turned ON.
The high-speed simple program check and coordinate position check enabled signal (X713 is turned ON by turning ON the
high-speed simple program check and coordinate position check enable signal (Y76B) during the high-speed simple program
check.
Input/output Device No.
NC -> PLC Y76B SPSC
PLC -> NC X713 SPSCO
When there are differences between the start and end times of processing programs, the following operation errors are
generated.
When differences occur simultaneously for workpiece coordinate positions and machine coordinate positions, only the
operation error (M01 1215) appears.
 Workpiece coordinate position: Operation error (M01 1215)
 Machine coordinate position: Operation error (M01 1216)
Cycle operation for all part systems cannot start while operation errors have been generated. Clear the operation errors
before starting cycle operation.
The operation error will not clear if the high-speed simple program check mode signal (Y73E) is turned OFF and some other
mode is selected.
Operation errors are cleared by performing an NC reset.
The coordinate position check only checks control axes (*2) in the main part system when the main part system (*1) NC reset
signal is input. The coordinate position check is not performed for sub part systems (*3).
(*1) Refers to the first upstream part system in the flow of sub part system calls.
(*2) Refers to axes for which the part system has control rights.
(*3) Refers to part systems started by the sub part system start command. (Normal cycle operation is disabled.)
IB-1501668-B
Signal name
High-speed simple program check
Coordinate position check enable
High-speed simple program check
Coordinate position check enabled
600
Description
The coordinate position check enabled sig-
nal is turned ON during the high-speed
simple program check by turning ON this
signal during the high-speed simple pro-
gram check.
While this signal is turned ON, the coordi-
nate position difference check is enabled
during the high-speed simple program
check.