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Communications Processor CP 541
EWA 4NEB 812 6188-02
The CP 541 has three LEDs to indicate the operational state of the CP 541
and any errors.
Table 1-1
LED Indicators of the CP 541
LED
Color
Position
Meaning
RUN
Green
Left
Operational state
ERR
Red
Middle
Error in CP 541 or at PG/PLC connection
BF L2
Red
Right
Error at L2 connection or SINEC L2 not
yet activated
The CP 541 has a mode switch with three settings. The meanings of the dif-
ferent settings are given in Table 1-2.
Table 1-2
Mode Switch of the CP 541
Switch Setting
Meaning
RUN
The CP 541 is in normal operation. Data will be ex-
changed between the PLC and SINEC L2.
STOP
You can assign parameters to the CP 541 with a PG
and read out the diagnostics block.
0
The CP 541 is switched off.
The CP 541 has various connectors and terminals; these are listed in
Table 1-3.
Table 1-3
Connectors and Terminals of the CP 541
Designation
Type
Meaning
PG/PLC
15-pin sub. D female with
slide latch
For PG cable or connecting
cable to PLC
SINEC L2
- PLC-PLC
- DP
9-pin sub. D female with
screw-type connection
For L2 bus connector
L+
M
Screw terminals
24 V DC power supply
LED Indicators
Mode Switch
Connectors and
Terminals
Overview