RS422 mode

Notice

Differential and single-ended connection

The RS422 signal transmits a differential voltage, which makes the signal less sensitive to interference compared to a single-ended signal.

If the encoder signal is to be transmitted over longer distances or at higher frequencies, an encoder with RS422 signals is recommended.

Shielded and twisted pair cables should be used.

Connection of RS422 encoders with or without zero pulse

RS422 mode 1:
Connection of RS422 encoders with zero pulse in single-channel mode
RS422 mode 2:

Connection instructions

  • When using an encoder without zero pulse C, the module pins for the C track are not connected.

Connection of RS422 counters / pulse generators with or without zero pulse

RS422 mode 3:
Connection of RS422 counter / pulse generators with zero pulse in single-channel mode
RS422 mode 4:

Connection instructions

  • If a counter / pulse generator is connected, the B track determines the counting direction.
    In RS422 mode a differential signal is expected on the B̅ track.
  • When using a counter / pulse generator without zero pulse C, the module pins for the C track are not connected.