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Chapter 13 Control Sub Functions
[4] Setting the M code output function
The following shows the settings to use the "M code output function".
(1) Set the M code No. in the positioning data "[Da.10] M code/Condition data
No./Number of LOOP to LEND repetitions".
(2) Set the timing to output the M code ON signal.
Set the required value in the following parameter, and write it to the Simple
Motion module.
The set details are validated at the rising edge (OFF
ON) of the PLC READY
signal [Y0].
Setting item
Setting
value
Setting details
Buffer memory address
QD77MS2
QD77MS4
QD77MS16
[Pr.18]
M code ON signal
output timing
Set the timing to output the M code ON signal.
0: WITH mode
1: AFTER mode
27+150n
n: Axis No.-1
: Refer to Section 5.2 "List of parameters" for setting details.
[5] Reading M codes
"M codes" are stored in the following buffer memory when the M code ON signal
turns ON.
Monitor item
Monitor
value
Storage details
Buffer memory address
QD77MS2
QD77MS4
QD77MS16
[Md.25] Valid M code
The M code No. ([Da.10] M code/Condition
data No./Number of LOOP to LEND
repetitions) set in the positioning data is
stored.
808+100n 2408+100n
n: Axis No.-1
: Refer to Section 5.6 "List of monitor data" for information on the storage details.
The following shows a sequence program example for reading the "[Md.25] Valid
M code" to the PLC CPU data register (D110). (The read value is used to
command the sub work.)
Read M codes not as "rising edge commands", but as "ON execution
commands".
M code ON signal
K1
D110
K808H0FROM
ON execution command
D110: valid M codes
[QD77MS4 program example]