"Analogue input module CPX-E-4AI-U-I Dimensions W x L x H=18,9 mm x 76,6 mm x 124,3 mm, Grid dimension=18,9 mm, No. of inputs=4, Diagnostics via LED=(* Error per channel, * Error per module), Diagnostics via bus=(* Wire break, * Short circuit/overload in sensor supply, * Parameter error, * parameterisation error, * Overload at analogue inputs, * Upper limit value not observed, * Overflow/underflow, * Lower limit value not observed)