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13 USING STO FUNCTION
13.2 STO I/O signal connector (CN8) and pin assignment
13.2
STO I/O signal connector (CN8) and pin
assignment
Pin assignment
The pin assignment of the connectors is as viewed from the cable connector wiring section.
Signal (device) explanations
I/O device
Signal
name
Connector pin
No.
Description
I/O
division
STOCOM
CN8-3
Common terminal for input signal of STO1 and STO2
DI-1
STO1
CN8-4
Input STO state 1.
STO state (base circuit shut-off): Open between STO1 and STOCOM.
STO release state (in driving): Close between STO1 and STOCOM.
Be sure to turn off STO1 after the servo motor stops by the servo-off state or with forced stop deceleration by
turning off EM2 (Forced stop 2).
DI-1
STO2
CN8-5
Input STO state 2.
STO state (base circuit shut-off): Open between STO2 and STOCOM.
STO release state (in driving): Close between STO2 and STOCOM.
Be sure to turn off STO2 after the servo motor stops by the servo-off state or with forced stop deceleration by
turning off EM2 (Forced stop 2).
DI-1
TOFCOM
CN8-8
Common terminal for monitor output signal in STO state
DO-1
TOFB1
CN8-6
Monitor output signal in STO1 state
STO state (base circuit shut-off): Between TOFB1 and TOFCOM is closed.
STO release state (in driving): Between TOFB1 and TOFCOM is opened.
DO-1
TOFB2
CN8-7
Monitor output signal in STO2 state
STO state (base circuit shut-off): Between TOFB2 and TOFCOM is closed.
STO release state (in driving): Between TOFB2 and TOFCOM is opened.
DO-1
TOFB2
STO2
TOFB1
STO1
STOCOM
2
CN8
STO I/O signal connector
Servo amplifier
1
4
3
6
5
8
7
TOFCOM
Summary of Contents for MELSERVO-J4 series
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