IDEC MicroSmart - Manual (Page 481)

« FC4A M ICRO S MART U SER ’ S M ANUAL » 29-1
29: 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
MicroSmart .
The MicroSmart 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 MicroSmart , user program syntax errors are still checked. Errors are also checked at starting and during
operation of the MicroSmart . When an error occurs, the error is reported by turning on the ERR LED on the MicroSmart
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 CPU module, the ERR
LED is lit. See the trouble shooting diagrams on page 29-10.
For error causes to turn on the ERR LED, see page 29-4.
Reading Error Data
When any error occurs during the MicroSmart 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.
P
W
R
R
U
N
E
R
R
S
T
A
T
0 1 2 3 4 5 7 10 6 11
0 1 2 3 4 5 6 7 10 11 12 13 14 15
OUT
IN
ERR LED
Error Code Box
D8005 (general error code)
value in hexadecimal
Details Button
System Program Version
D8029