Siemens SIMATIC TD 200 User Manual page 96

Troubleshooting
Table C-1 Troubleshooting Table
Problem
NETWORK ERROR
(TD 200 cannot establish a
network connection or enter an t k ti t
existing network.) existing network.)
CPU BUSY
CPU IN STOP MODE
CHARACTER SET ERROR
Display backlight blinks on and
off
C-2
Possible Cause
May be multiple masters with the
same address.
Cable problems.
Multiple CPUs at the same
address.
Some other master has locked
the CPU by uploading or
downloading a program to that
CPU.
RUN/STOP switch is in STOP.
A character set which has been
selected is not supported.
Software checksums are
incorrect.
Solution
Remove other masters and retry.
Check the cable connections.
Remove other CPUs and retry.
Wait — it disappears in a few
seconds.
Put CPU in RUN mode.
Use the TD 200 wizard to select
a valid character set.
TD 200 hardware is defective.
Replace with a new TD 200.
SIMATIC TD 200 Operator Interface
C79000-G7076-C272-01