Led Displays On The 1Si 3964/Ascii And 1Si Modbus/Uss Serial Interface Modules - Siemens Simatic ET 200S Operating Instructions Manual

Alarm, error and system messages
8.1 Alarm, error and system messages on PROFIBUS DP
8.1.1.12

LED displays on the 1SI 3964/ASCII and 1SI Modbus/USS serial interface modules

1SI 3964/ASCII and 1SI Modbus/USS serial interface modules
LED displays on the 1SI 3964/ASCII and 1SI Modbus/USS:
①
②
Status and error displays by means of LEDs on the 1SI 3964/ASCII and 1SI Modbus/USS
The table shows the status and error displays on the 1SI 3964/ASCII and 1SI Modbus/USS.
SF
on
Only detected in the case of RS-422 interface connections when the default for the receive line is
1
set to R(A) 5 V/R(B) 0 V.
8-16
1
2
Group error (red)
Status displays for digital inputs (green)
Event (LEDs)
TX RX
Hardware fault
Firmware error
Parameter assignment error
Wire break or loose cable between
the module and the communication
peer
Communication error
on The module is sending data via the
interface.
on The module is receiving data via
the interface.
Cause
1
Action
Check the module.
Check the parameter assignment.
Evaluate the diagnostics.
Check the wiring.
Check the communication settings.
Operating Instructions, 12/2005, A5E00515771-03
ET 200S