# Triggering Readers

Trigger via Photoeye:

- Port C2 corresponds to C0 input of the reader.
- Port C3 corresponds to C1 input of the reader.
- Each port has two different physical inputs that can be used PIN 2 / PIN 4.
- This selection can be made with “Trigger PIN” bit in “Trigger Control”.
- The trigger point on PE could be executed either on Leading or Trailing edge of the signal.
- This selection can be made with “Trigger Edge” bit in “Trigger Control”.
- There is a “Trigger Settings” bit that allows the two readers to be triggered simultaneously from one PE point from port C0.

Trigger via Fieldbus:

- Triggering can be executed from Profinet and Ethernet/IP.
- For that, the “Trigger Enable” bit should be true.
- When that bit is true, the PE signals are not considered, but signals can be read out via fieldbus for other purposes.
- The trigger point on industrial network could be executed either on Leading or Trailing edge of the signal.
- This selection can be made with “Trigger Edge” bit in “Trigger Control”.