Error Display Via The Group Error Leds - Siemens SIMATIC S7-300 FM 350-1 Manual

Errors and diagnostics

10.1 Error Display via the Group Error LEDs

10.1 Error Display via the Group Error LEDs
Where is the Fault Indicated?
If the red group error LED lights up, a fault has occurred either on the module (internal fault)
or at the cable connections (external fault).
Which Errors Are Displayed?
Table 10- 1
Type of error
Internal faults
External errors
Initiating a Diagnostics Interrupt
All faults except the EPROM test fault, can initiate a diagnostics interrupt provided you have
enabled the diagnostics interrupt in the relevant parameterization screen. You can see which
fault has caused the LED to light up from the diagnostics data sets DS0 and DS1. The
assignment of the diagnostic data records DS0 and DS1 is described in the next section.
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Error Types Displayed by the Group Error LED
Cause of the error
Fault in EPROM TEST
Fault in RAM TEST
Watchdog tripped
Lost hardware interrupt
Module parameterization missing
Coding plug wrongly connected
Auxiliary voltage 1L+/1M not connected
or 24 VDC encoder supply short-
circuited
5.2 VDC encoder supply short-circuited
or overloaded
Fault in 5 V encoder signals (wirebreak,
short-circuit, cable missing)
Module parameterization does not
match the position of the coding plug
Correction
Module replacement
Module replacement
Module replacement
Increase time between the interrupt
causes
Assign parameters and transfer
Correct the position of the coding plug
Correct connection
Correct connection
Correct connection
Correct parameterization and transfer,
or reconnect the coding plug
FM 350-1 Counter module
Manual, 05/2011, A5E03648639-01