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MELSEC-
A
12 CONTROL AUXILIARY FUNCTIONS
(b) AFTER mode
The M code ON signal [RXnD, RXnE] is turned ON at the positioning
completion, and the M code is stored in "Valid M code (RWrn+4,
RWrn+12)".
01 00
*
m1 m2
V
t
OFF
ON
OFF
OFF
ON
ON
Positioning start signal
BUSY signal
M code ON signal
Positioning
* m1 and m2 indicate set M codes.
Valid M code
Da. 1 Operation pattern
*
M code OFF request
[RXn4, RXn5]
[RY(n+1)0, RY(n+1)1]
[RXnD, RXnE]
[RY(n+2)6, RY(n+4)6]
[RWrn+4, RWrn+12]
OFF
ON
Fig. 12.38 M code ON/OFF timing (AFTER mode)
(2) M code OFF request
When the M code ON signal [RXnD, RXnE] is ON, it must be turned OFF by the
sequence program.
To turn OFF the M code ON signal, set ON (turn OFF the M code signal) in "M
code OFF request (RY(n+2)6, RY(n+4)6)".
Setting item
Setting
value
Setting details
Remote input/output
Axis 1 Axis 2
M code OFF request 1 Set "1: Turn OFF the M code ON signal". RY(n+2)6 RY(n+4)6
* Refer to section "3.4 Specifications of input/output signals for master module" for details on the setting details.
The next positioning data will be processed as follows if the M code ON signal is
not turned OFF. (The processing differs according to the "
Da.1 Operation
pattern".)
Da.1 Operation pattern Processing
00
Independent positioning control
(Positioning complete)
The next positioning data will not be executed until the M code ON
signal is turned OFF.
01 Continuous positioning control
11 Continuous path control
The next positioning data will be executed, but a warning "M code
ON signal ON start" (warning code: 503) will occur.