Mitsubishi Electric M700V Series Programming Manual page 324

13. Program Support Functions
(4) Order of command priority
If "M" is designated for the ASCII code address, the codes basically necessary for that
machine will be overlapped. In this case, commands will be identified with the following priority
using code values.
(a) M00 (program stop command), M01 (optional stop command)
M02, M30 (end command)
(b) When corresponding to miscellaneous code (M) call macro command
(c) When corresponding to ASCII code macro command
(d) Used as normal command
If "S", "T" and "B" are designated for the ASCII code address, commands will be identified with
the following priority using code values.
(a) When corresponding to miscellaneous code (S, T, B) call macro command
(b) When corresponding to ASCII code macro command
(c) Used as normal command
If the other addresses do not correspond to the ASCII code macro command, they will be
identified as normal commands. If the command to be used overlaps with an ASCII code
macro command, it must be commanded in the program macro-called with the ASCII code.
Note that there are cases where the command will be unconditionally handled as a normal
command, as explained in (5) below.
(5) Conditions where the address set in ASCII code macro command is handled as a normal
command
(a) When there is a data setting command (G10) in the same block.
(b) When ASCII code macro call is executed after the G code macro call command in the
same block (also applies for M, S, T, B and ASCII)
(Example) When address "D" (G65 type) is set in the ASCII code macro, and M50 is set
(c) When inputting parameters
(d) When there is a comma (,) before the address. (Example) ",D", ",R", etc.
(e) When commanded in fixed cycle
(f) When commanded in macro subprogram called with G code macro call
(Also applies when macro is called with M, S, T, B or ASCII)
in the macro call (G65 type).
M50 D200 ; Execute M code macro with argument (Set 200 in #7)
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13.5 User Macro Specifications