Siemens CP 243-2 - Manual (Page 132)

Dealing with Problems / Error Displays
6-4
SIMATIC NET CP 243-2 AS-i Master
C79000-G8976-C142/02
Table 6-1 Error Displays of the CP 243-2 / Remedying Errors
Error Remedy Possible Cause
The CP 243-2 does not switch
from the configuration mode to the
protected mode. The S7-200 CPU is in the “RUN”
mode. Switch the S7-200 CPU to
“STOP”. This sets the PLC_RUN
bit to 0.
The SET button was not pressed
long enough. Press the button for at least 0.5
seconds.
A slave with address “0” is con-
nected to the AS-Interface cable.
The CP 243-2 cannot change to
the protected mode as long as
this slave exists. Remove the slave with
address 0.
The CP 243-2 does not switch
from the protected mode to the
configuration mode. The S7-200 CPU is in the “RUN”
mode. Switch the S7-200 CPU to
“STOP”.
This sets the
PLC_RUN bit to ‘0’.
Button not pressed long enough Press the button for at least 0.5
seconds.
After failure of an AS-Interface
slave, the “AUP” display remains
off. The CP 243-2 is in the configura-
tion mode. “Automatic programming” is not
possible in the configuration
mode.
Program the address of the new
AS-Interface slave with the ad-
dressing unit.
More than one AS-Interface slave
has failed. Check the AS-Interface cable.
If “APF” is displayed at the same
time, check the power supply on
the AS-Interface cable.
If more than one AS-Interface
slave is defective, program the ad-
dress on the replaced AS-Inter-
face slaves using the addressing
unit.
The CP 243-2 has not detected
configured AS-Interface slaves. Remove the unconfigured AS-In-
terface slaves from the AS-Inter-
face cable.
The AUTO_ADDR_ENABLE flag
is not set. Set the bit with the appropriate
commands or by pressing the
SET button during AS-i Power
Fail.