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7
1. Error Messages 7-1
Error Correction
1. Error Messages
There are five kinds of error messages displayed on the UG30 series:
1. Communication error
2. Check
3. Warning
4. SYSTEM ERROR
5. Touch switch is active
1. Communication Error
* If the above error messages are displayed on the POD without establishing communication
between POD and PLC, test the solution of remark “1.”
If the error occurs suddenly in communication, test the solution of remark “2.”
MENU
Communication Error
Time-Out
* When you go to [Comm. Parameter],
bring up the [Detail] tab window and set
[Continue] for [Comm. Error Handling],
a screen like the one shown below is
displayed.
Error Message Contents Solution Remarks
Timeout
Although a request to send is given to the PLC,
no answer is returned within the specified time.
1. Check the communication parameters.
2. Check the cables and wiring.
1
3. Data may be disrupted because of noise.
Fix noise.
2
Parity An error occurred in parity check.
1. Check the cables and wiring. 1
2. Data may be disrupted because of noise.
Fix noise.
2
Framing
Although the stop bit must be [1], it is detected
as [0].
1. Check the communication parameters.
2. Check the cables and wiring.
1
3. Data may be disrupted because of noise.
Fix noise.
2
Overrun
After one character is received, the next
character is received before internal processing
is completed.
1. Check the communication parameters. 1
2. Data may be disrupted because of noise.
Fix noise.
2
Check code error
The check code in the PLC response was not
correct.
1. Check the communication parameters. 1
2. Data may be disrupted because of noise.
Fix noise.
2