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3. POSITIONING SIGNALS
The user must not turn start accept flags ON/OFF.
• If a start accept flag that is ON is switched OFF with the sequence program or a peripheral
device, no error will occur but the positioning operation will not be reliable. Depending on the
type of machine, it might operate in an unanticipated manner.
• If a start accept flag that is OFF is switched ON with the sequence program or a peripheral
device, no error will occur at that time, but the next time an attempt is made to start the axis an
error will occur during a start accept flag being ON and the axis will not start.
2) When positioning control is executed by turning ON the JOG operation
command (M3202+20n or M3203+20n), the start accept flag goes OFF
when positioning is stopped by turning the JOG operation command OFF.
3) The start accept flag is ON while the manual pulse generator enable flag
(M2051 to M2053: ON) is ON.
The start accept flag is OFF while the manual pulse generator enable
flag (M2051 to M2053: OFF) is OFF.
4) The start accept flag is ON during a current value change initiated by a
CHGA instruction. It goes OFF on completion of the current value change.
CHGA
instruction
Start accept
OFF
instruction
(M2001n)
5) When M2000 is OFF, execution of a SVST instruction causes the start
accept flag to come ON; the flag goes OFF when M2000 comes ON.
PLC READY
(M2000)
SVST instruction
Start accept flag
REMARK
A numerical value corresponding to an axis number is entered for "n" in
"M2001 + n".
Axis No.
n
Axis No.
1
0
2
1
3
2
4
3
5
4
6
5
7
6
8
7
ON
Current value change
Processing in progress
OFF
ON
OFF
CAUTION
n
Axis No.
9
8
17
10
9
18
11
10
19
12
11
20
13
12
21
14
13
22
15
14
23
16
15
24
3 − 24
Goes OFF on completion of
current value change processing
ON
n
Axis No.
16
25
17
26
18
27
19
28
20
29
21
30
22
31
23
32
n
24
25
26
27
28
29
30
31
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