Flex System Module Cable Pinout
Cat 5 or Cat 6 cable is recommended for Flex System modules. The following table references standard conductor colors for those cable types with 8P8C (RJ45) connectors.
Note: The Flex System II Expander does not receive power from the connection cable. It must be powered separately.
| Pin Number | Name | Conductor Color |
| 1 | RS-485A | white and orange |
| 2 | RS-485B | orange |
| 3 | Ground | white and green |
| 4 | not used | blue |
| 5 | Ground | white and blue |
| 6 | not used | green |
| 7 | Power Positive | white and brown |
| 8 | Power Positive | brown |
Reference pictures:
