OPENNET CONTROLLER USER’S MANUAL 27-1
27: TROUBLESHOOTING
Introduction
This chapter describes the procedures to determine the cause of trouble and actions to be taken when any trouble occurs
while operating the OpenNet Controller.
The OpenNet Controller has self-diagnostic functions to prevent the spread of troubles if any trouble should occur. In case
of any trouble, follow the troubleshooting procedures to determine the cause and to correct the error.
Errors are checked in various stages. While editing a user program on WindLDR, incorrect operands and other data are
rejected. User program syntax errors are found during compilation on WindLDR. When an incorrect program is down-
loaded to the OpenNet Controller, user program syntax errors are still checked. Errors are also checked at starting and dur-
ing operation of the OpenNet Controller. When an error occurs, the error is reported by turning on the ERROR LED on the
OpenNet Controller and an error message can be viewed on WindLDR.
ERROR LED
The OpenNet Controller CPU module has an error indicator ERROR.
When an error occurs in the OpenNet Controller CPU module, the
ERROR LED is lit. See the trouble shooting diagrams on page 27-10.
For error causes to turn on the ERROR LED, see page 27-4.
Reading Error Data
When any error occurs during the OpenNet Controller operation, the error codes and messages can be read out using
WindLDR on a computer.
Monitoring WindLDR
1. From the
WindLDR menu bar, select Online > Monitor. The monitor mode is enabled.
2. From the
WindLDR menu bar, select Online > PLC Status. The PLC Status dialog box appears.
The general error code stored in special data register D8005 is displayed in the error code box.
COM
POWER
RUN
ERROR
HSC OUT
OPENNET
CONTROLLER
ERROR LED
Details Button
Error Code Box
D8005 (general error code)
value in hexadecimal
System Program Version
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
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