Siemens SIMATIC NET CP 343-2 Manual page 112

7 Dealing with Problems / Error Displays
7.2 Error Displays/Remedying Errors
The following table lists the possible causes of errors that can occur when
operating the CP 343-2 and how to remedy the problem.
Table 10-1
Error
APF LED lit
PWR LED not lit
SF lights up without pressing the
button.
SF is lit when the SET button is
pressed.
CER LED is permanently lit.
112
Possible Cause
Power requirements of the AS-i
slaves are too high. Result: The
voltage on the AS-i cable is too
low.
Power requirements of the AS-i
slave too high.
The CP connection to the
backplane bus is faulty.
The CP 342−2 is in the protected
mode and an AS-i configuration
error has occurred (for example
slave failure).
The CP is defective. Internal
EEPROM error −> see signaling
S7−300 system diagnostic buffer.
A slave with address 0 exists
when there is a change to the pro-
tected mode.
The CP 343-2 module has not yet
been configured.
A configured AS-i slave has failed
(evaluate the slave display).
An unconfigured slave was con-
nected to the AS-i cable.
An AS-i slave was connected
whose configuration data (I/O con-
figuration, ID code) do not match
the values of the configured AS-i
slave.
Short circuit on the AS-i cable
Remedy
Check the power requirements of
the AS-i slaves. If necessary, sup-
ply the AS-i slaves with an exter-
nal voltage.
Check the power requirements of
the AS-i slaves. If necessary,
supply the slaves with power
externally.
Check whether the module is
plugged in correctly.
Eliminate the configuration error.
Replace the CP.
Remove the slave with address 0
from the AS-i cable.
Configure the CP 343-2 module
using the SET button on the front
panel.
Replace the defective AS-i slave
or reconfigure the CP 343-2 mo-
dule if the AS-i slave is not requi-
red.
Remove the AS-i slave or reconfi-
gure the CP 343-2 module.
Check whether the wrong slave
has been connected. If necessary,
reconfigure the CP 343-2.
Check the AS-i cable and the con-
nected AS-i slaves.
CP 343−2 / CP 343−2 P AS−Interface Master
Release 08/2008
C79000−G8976−C149−04