Diagnosis

E1..E4	d1	d2	d3	d4	Identifier 000..063	AC500-Display	<− Display in
Class	Comp	Dev	Mod	Ch	Err	PS501 PLC Browser
Class	Inter- face	Device	Module	Channel	Error- Identifier	Error message		Remedy
Errors for Onboard I/O
Light errors
3	8	255	2	0	3	MaxWaitRun for onboard I/O Module has expired, when PLC is put into RUN state		Reboot and try it again. If the error still exists, replace processor module for testing
3	8	255	3	0	26	Invalid configuration of onboard I/O Module, e. g. 2  input channels are configured as fast counter and interrupt input at the same time.		Correct PLC configuration
Warnings
4	8	1	2	1	2	Invalid configuration value for PWM channel. Frequency / cycletime for the PWM channel of the 8DI+6DO and 8DI+6DO+2AI+1AO module are common and if both channel are configured for PWM, the frequency of the second channel must be set to 0.		Correct frequency
4	8	1	2	0..1	4	PWM channel frequency or cycle time too high		Correct frequency or cycle time
4	8	1	2	0..1	7	PWM channel frequency or cycle time too low		Correct frequency or cycle time
4	8	1	2	0	52	Frequency on interrupt input pin too high and interrupt events are missed		Correct frequency
4	8	255	2	0	26	PLC was put into RUN state, although a configuration error is present, because parameter Run on config fault is set to YES		Correct PLC configuration
4	8	255	0	0	43	Unspecified or internal error occured		Replace processor module