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Overview
LED Indicators
Mode Switch
Connectors and
Terminals
1-6
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
RUN
Green
Left
ERR
Red
Middle
BF L2
Red
Right
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
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
PG/PLC
15-pin sub. D female with
slide latch
SINEC L2
9-pin sub. D female with
screw-type connection
- PLC-PLC
- DP
L+
Screw terminals
M
Meaning
Operational state
Error in CP 541 or at PG/PLC connection
Error at L2 connection or SINEC L2 not
yet activated
Meaning
Type
For PG cable or connecting
cable to PLC
For L2 bus connector
24 V DC power supply
Communications Processor CP 541
Meaning
EWA 4NEB 812 6188-02
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