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2.6 Servo Command I/O Signal (SVCMD_IO)
2.6.2 Bit Allocation of Servo Command I/O Signal Monitoring
Details of I/O Signal Bits
The following table shows the details of the I/O signal bits.
Bit
2-24
Name
DEC
1
The status used to judge the state of the deceleration limit switch used for zero point
return operation
P_OT
Overtravel (OT) is a function that forcibly stops a movable machine unit if it moves beyond
2
its range of movement.
P_OT is the status used to judge if the movable machine unit is in the forward drive prohib-
ited state. The OT stop judgment is made based on ZSPD.
N_OT
Overtravel (OT) is a function that forcibly stops a movable machine unit if it moves beyond
3
its range of movement.
N_OT is the status used to judge if the movable machine unit is in the reverse drive prohib-
ited state. The OT stop judgment is made based on ZSPD.
EXT1
The status used to judge the state of the external latch 1 input signal
4
[Important]
The
-7F Integrated Servomotor (Model: SGF7
monitoring because it lacks external input signal 1. The value will be undefined.
EXT2
The status used to judge the state of the external latch 2 input signal
5
[Important]
The
-7F Integrated Servomotor (Model: SGF7
monitoring because it lacks external input signal 2. The value will be undefined.
EXT3
The status used to judge the state of the external latch 3 input signal
6
[Important]
The
-7F Integrated Servomotor (Model: SGF7
monitoring because it lacks external input signal 3. The value will be undefined.
ESTP
(HWBB)
7
When the HWBB1 or HWBB2 signal is input, the power supply to the motor is shut OFF
forcibly and the motor stops according to the setting of Pn001 = n.X.
BRK_ON
9
The holding brake is used in applications where the servo driver controls the vertical axis.
This is the status used to judge the state of the holding brake control signal (/BK). Note
that the logic is the inverse of that of the hardware output (/BK).
P_SOT
The software limit forcibly stops a movable machine unit if it moves beyond the software
10
limit range in the same manner as the overtravel function, with or without using P_OT and
N_OT (overtravel signals).
This is the status used to judge if the movable machine unit is in the Forward Software
Limit state (common parameter: 26).
Description
Zero Return Deceleration
Limit Switch Input
Forward Drive Prohibition
Input
Reverse Drive Prohibition
Input
External Latch 1 Input
External Latch 2 Input
External Latch 3 Input
Emergency Stop
Brake Application Output
Forward Software Limit
Value
Setting
0
OFF
1
ON
0
OFF
1
ON
0
OFF
1
ON
0
OFF
1
ON
-
2
) does not support
0
OFF
1
ON
-
2
) does not support
0
OFF
1
ON
-
2
) does not support
0
OFF
1
ON
0
Brake released
1
Brake applied
0
Range of motion
Drive prohibited due to forward
1
software limit
Continued on next page.
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