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8 USING STO FUNCTION
8.2 Functional safety I/O signal connector (CN8) and pin assignments
8.2 Functional safety I/O signal connector (CN8) and
pin assignments
Pin assignment
The pin assignments of the connectors are as viewed from the cable connector wiring section.
Signal (device) explanation
I/O device
Signal
name
Connector pin
No.
Description I/O
signal
interface
type
STOCOM CN8-3 Common terminal for the STO1 and STO2 input signals DI-1
STO1 CN8-4 Input the STO status of STO1.
STO state (base circuit shut-off): Open between STO1 and STOCOM.
STO release state (in driving): Close between STO1 and STOCOM.
Before turning off STO1, stop the servo motor in the servo-off state or with forced stop deceleration by turning
off EM2 (Forced stop 2).
DI-1
STO2 CN8-5 Input the STO status of STO2.
STO state (base circuit shut-off): Open between STO2 and STOCOM.
STO release state (in driving): Close between STO2 and STOCOM.
Before turning off STO2, stop the servo motor in the servo-off state or with forced stop deceleration by turning
off EM2 (Forced stop 2).
DI-1
TOFCOM CN8-8 Common terminal for the TOFB1 and TOFB2 output signals DO-1
TOFB1 CN8-6 Outputs the STO status of STO1.
STO state (base circuit shut-off): Closed between TOFB1 and TOFCOM.
STO release state (in driving): Open between TOFB1 and TOFCOM.
DO-1
TOFB2 CN8-7 Outputs the STO status of STO2.
STO state (base circuit shut-off): Closed between TOFB2 and TOFCOM.
STO release state (in driving): Open between TOFB2 and TOFCOM.
DO-1
CN8
TOFB2
STO2TOFB1
STO1
STOCOM
2 1
43
65
87
TOFCOM
Servo amplifier
Functional safety
I/O signal connector
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