IDEC MicroSmart Pentra - Manual (Page 127)

W EB S ERVER CPU M ODULE U SER ’ S M ANUAL FC9Y-B1278 13-1
13: T
ROUBLESHOOTING
Introduction
This chapter describes the procedures to determine the cause of trouble and actions to be taken when any trouble occurs
while operating the Web server CPU module.
The Web server CPU module 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 devices and other data are
rejected. User program syntax errors are found during compilation on WindLDR. When an incorrect program is
downloaded to the Web server CPU module, user program syntax errors are still checked. Errors are also checked at
starting and during operation of the Web server CPU module. When an error occurs, the error is reported by turning on
the ERR LED on the Web server CPU module and an error message can be viewed on WindLDR. Error codes can also be
read on the HMI module.
ERR LED
The MicroSmart CPU module has an error indicator ERR. When
an error occurs in the MicroSmart, the ERR LED is lit. See
“Troubleshooting Diagram 3” on page 13-11.
For error causes to turn on the ERR LED, see “Error Causes and
Actions” on page 13-4.
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ERR LED