Siemens Simatic S7-1500 / ET 200MP - Page 47

Interrupts/diagnostic alarms
6.1 Status and error displays
Technology module TM FAST (6ES7554-1AA00-0AB0)
46 Equipment Manual, 04/2023, A5E52301130-AA
Meaning of the LED displays
The following tables explain the meaning of the status and error displays. Remedial measures
for diagnostic alarms can be found in the section Diagnostic alarms (Page 48).
Table 6- 1 Status and error displays RUN/ERROR/MAINT
LEDs
Meaning Remedy
RUN
ERROR
MAINT
Off Off Off
No voltage or too low voltage on back-
plane bus
• Switch on the CPU and/or the system
power supply modules.
• Check whether the voltage connect-
ors are inserted.
• Check whether too many modules
are inserted.
Flashes
Off
Off
Technology module not configured
—
On
Off
Off
Technology module configured but no
module diagnostics
On Flashes Off
Technology module configured and
module diagnostics (at least one error
present)
Evaluate the diagnostic alarms and elim-
inate the error.
Flashes
Flashes
Flashes
Hardware or firmware defective
Replace the technology module.
On Off On
FPGA debug interface enabled
Disable the FPGA debug interface (e.g.
via the commissioning editor) and re-
move the TM FAST Debug Connector as
soon as the commissioning of the mod-
ule is completed.
Table 6- 2 PWR/ERROR status displays
LEDs
Meaning Remedy
PWR
ERROR
Off Off
Supply voltage too low or missing
and "Missing supply voltage L+" not
activated
• Check the supply voltage.
• Make sure that the front connect-
or is correctly inserted.
• Activate "Missing supply voltage
L+" in the device configuration.
Off
Flashes
Supply voltage too low or missing
• Check the supply voltage.
• Make sure that the front connect-
or is correctly inserted.
On
Off
Supply voltage is present and OK
—
On
Flashes
Module diagnostics (at least one
error is present)
Evaluate the diagnostic alarms and
eliminate the error.