Processor
module
LED State Color LED = ON LED = OFF
C12, C13 Digital configu-
rable input/
output
Yellow Input/Output
is ON
Input/Output is
OFF
PM5072-T-2ETH
PM5072-
T-2ETHW
I0..I11 Digital input Yellow Input is ON Input is OFF
O0..O7 Transistor
output
Yellow Output is ON Output is OFF
C12, C13 Digital configu-
rable input/
output
Yellow Input/Output
is ON
Input/Output is
OFF
Table 8: State LEDs at Ethernet connector
LED Color OFF ON Flashing
Activity Yellow No activity --- Activity
Link Green No link Link ---
6.1.1.6 Diagnosis
The AC500 processor module can display various errors according to the error classes. The fol-
lowing error classes are possible. The reaction of the processor module is different for each
type of error.
Error class Type Description Example
E1
ERR-LED is ON
Fatal error A safe function of the oper-
ating system is no longer
guaranteed.
Checksum error in the
system Flash or RAM
error
E2
ERR-LED is ON
Severe error The operating system is
functioning without prob-
lems, but the error-free pro-
cessing of the user pro-
gram is no longer
guaranteed.
Checksum error in the
user Flash, independent
of the task duration
E3
ERR-LED is
ON/OFF *)
Light error It depends on the applica-
tion if the user program
should be stopped by the
operating system or not.
The user should determine
which reaction is neces-
sary.
Flash could not be pro-
grammed, I/O module
has failed
E4
ERR-LED is
ON/OFF *)
Warning Error in the periphery (e.g.
I/O) which may show an
impact in the future. The
user should determine
which reaction is neces-
sary.
Short-circuit at an I/O
module, the battery is run
down or not inserted
*) The behaviour if the ERR-LED lights up at error classes E3 or E4 is configurable.
Occurred errors can be displayed with the commands diagshow all in the PLC-Browser of
Automation Builder software.
Ethernet state
LEDs
Processor modules > PM50xx
2021/06/293ADR010635, 2, en_US74
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