2
GFK-2731
Chapter 2 Product description
2-7
UM
Green LED
Monitoring the supply voltage U
M
OFF:
Communications power is not present
Flashing at 1 Hz:
U
M
below the permissible voltage range (undervoltage)
ON:
U
M
present
P
Green LED
Status indicator for communication
OFF:
IC220SDL953 not parameterized
Flashing at 0.5 Hz: IC220SDL953 is parameterized, but safe communication is not running to at least
one satellite
ON:
Communication OK
IC220SDL953 is parameterized and safe communication is running without any
errors to all configured satellites.
If no satellites have been configured: IC220SDL953 is parameterized.
Corresponds to COK bit = 1 (see "Dev-Diag-LPSDO (LPSDO diagnostics)" on
OUT
0.1 - 3.2
Green/red LED
Status of each output
(see "Terminal point assignment" on page 3-3)
Green:
Output at logic 1
OFF:
Output at logic 0, no error
Red ON:
Short circuit/overload of an output
(This diagnostic message is stored temporarily on the module. The message is
stored in the volatile memory and will be lost after a voltage reset.)
Table 2-1
Local diagnostic and status indicators (continued)
In the event of an error (red LED ON), the output is switched off until the acknowledgment sent
by the controller is received by the safety module (see also "Safe digital output errors" on