Omron 3G8F7-CRM21 User Manual page 211

Preparing and Mounting Flat Connectors on the Cables
3. Mounting the Cable
3-1 Place the cable on the Connector with its white line facing upward,
near the cover opening.
(Top view)
Cable
White line
For T-branch connections
For Cable extension or connecting a Terminating Resistor
Connector
Center of the
connector
(Cover opening)
White line
Section E-4
191