State LEDs

During the power ON procedure, the module initializes automatically. All LEDs (except the channel LEDs) are ON during this time.

LED	State	Color	LED = OFF	LED = ON	LED flashes
Inputs 00…07 and 08…15	Analog input	Yellow	Input is OFF	Input is ON (brightness depends on the value of the analog signal)	–
UP	Process voltage 24 V DC via terminal	Green	Process voltage is missing	Process voltage OK	–
CH-ERR2	Channel error, error messages in groups (analog inputs or outputs combined into the groups 2 and 4)	Red	No error or process voltage is missing	Severe error within the corresponding group	Error on one channel of the group
CH-ERR4		Red
CH-ERR *)	Module error	Red	–	Internal error	–
*) Both LEDs (CH-ERR2 and CH-ERR4) light up together