PW      Signalizes applying operation voltage (Power).

 ER       Short flash at reboot.

             On at internal error.
             Blinks at initialization error.
             Blinks alternately with RD at wrong configuration
             of the master (project engineering error).
             Blinks simultaneously with RD at wrong
             parameterization.

 RD      On at "Data exchange" if Bus cycle is faster than

             PROFIBUS cycle.
             Off at "Data exchange" if Bus cycle is slower than
             PROFIBUS cycle.
             Blinks at positive self test (READY) and successful
             initialization.
             Blinks alternately with ER at wrong configuration of
             the master (project engineering error).
             Blinks simultaneously with ER at wrong
             parameterization.

 DE      (Data exchange) indicates PROFIBUS

             communication

1. Индикатор состояния процессорного модуля
2. Переключатель адреса
3. Разъем питания DC 24V
4. Интерфейс Profibus-DP slave