Mitsubishi Electric MELFA CR800 Series Instruction Manual page 27

2 INSTALLATION
(2) Unit connection (CR860 controller)
Connect the safety extension unit to the robot controller using the following steps.
1) Use the RIO cable (2F-SFRIOCBL05) to connect the safety extension unit to the robot controller.
2) Connect the terminator cap (2F-SFTM) to the RIO2 socket of the safety extension unit.
3) Locate the excess RIO cable in a space under the R800CPU module.
CR860 controller
CR800CPU unit
Safety extension unit (4F-SFUNIT2）
RIO cable（2F-SFRIOCBL05）
Terminator cap (2F-SFTM)
Fig. 2-10 Connection to the CR860 controller
Installation and Connection 2-17