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Troubleshooting
Refer to Table C-1 for a list of the problems that could occur with the TD 200 and possible
causes and solutions.
Table C-1
Troubleshooting Table
Problem
NO PARAMETER BLOCK
CPU NOT RESPONDING
HARDWARE ERROR
NETWORK ERROR
(TD 200 cannot establish a network
connection or enter an existing
connection or enter an existing
network.)
network.)
CPU BUSY
CPU IN STOP MODE
SIMATIC TD 200 Operator Interface
C79000-G7076-C205-04
Possible Cause
The TD 200 could not find a
parameter block in the programmable
logic controller.
The TD 200 found a parameter block
in the programmable logic controller,
in the programmable logic controller
but it contains errors.
Address of the CPU is incorrect.
CPU does not have power.
Cable problems.
Wrong baudrate configured.
Multiple CPUs at the same address.
May need network terminations.
Network too long or too many
devices on network.
TD 200 is inoperable.
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.
C
Solution
Configure a parameter block for the
TD 200 in the programmable logic
controller. Refer to Chapter 2.
Be sure the parameter block address
in the TD 200 matches the actual
address of the parameter block. Refer
to Section 3.8.
Be sure all fields are within range.
Be sure all addresses are legal for the
CPU. Refer to Section D.2.
Correct the address errors. Refer to
Section 3.8.
Power up the CPU.
Check the cable connections.
Correct the baud rate configuration.
Refer to Section 3.8.
Remove other CPUs and retry.
See SIMATIC S7-200 Programmable
Controller System Manual.
See SIMATIC S7-200 Programmable
Controller System Manual.
The TD 200 module could be
defective. Replace with a new
module.
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.
C-1
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