Error description 237-18018

Error message

18018 SPI expansion module: error in module, number %4

Cause of error

- The SPI plug-in board (module for CC or MC) for controlling
analog axes or for reading analog actual values
cannot respond correctly.
- SPI plug-in module is defective.
- Wiring error on the SPI plug-in module

Error correction

- Check the external wiring, especially analog inputs and outputs
connected to the SPI plug-in module.
- Exchange the SPI plug-in board (module for CC or MC).
- Inform your service agency.