Error Indications; Troubleshooting From The Pc - Omron SYSMAC C200H-CT001-V1 Operation Manual

Troubleshooting from the PC

5-1

Error Indications

5-2 Troubleshooting from the PC
Error List for Special I/O Units
Error
Waiting for Special I/O Unit
startup.
Too many Special I/O Units.
Error in Special I/O Unit.
80
When an error occurs, the ERROR indicator will light and the error flag will turn
ON. Error information is then output to IR word n+5 when READ ERROR is set.
READ ERROR can be set as many times as necessary to access further error
information. (Information for up to 30 errors will be saved in the system.)
Error information in IR word n+5 consists of the error location, which indicates
the last two digits of the DM address where the error originates, and the error
code, which classifies the error (Refer to Appendix A Error Code List). The error
location is held in bits 07 through 00; the error, in bits 15 through 08.
If the counter value overflows, the ERROR indicator will light and the counter
overflow flag will turn ON. The error flag will not turn ON for counter overflows,
and error information will not be output to IR word n+5.
If an error occurs, correct the cause of the error and clear all PC error flags. Error
information and the Counter Unit error flag will be cleared after all errors are read
out with READ ERROR.
Errors in the Counter Unit can be monitored from the PC. The Counter Unit is
monitored as a Special I/O Unit, and as such is treated the same as a Position
Control Unit or any other Special I/O Unit.
Possible cause and status
•
Special I/O Unit has a hardware
malfunction.
•
PC will not begin operation.
•
Same unit number has been
assigned to more than one Special
I/O Unit.
•
PC will not begin operation.
•
SR bit 25415 is ON.
•
Refreshing was not normally
executed between CPU and the
Special I/O Unit.
•
Only the malfunctioning Unit will
stop operation.
•
SR bit 25415 is ON.
Correction
•
Replace the Special
I/O Unit with a new Unit. (The malfunctioning Unit
displays only $s when I/O table is read.)
•
Set unit numbers so that each
is used only once (Unit numbers can be accessed
by reading I/O table.)
•
Obtain the malfunctioning Unit number by
reading AR bits 0000 to 0009, remove the cause
of the error, and then restart by turning OFF, ON,
then back off the appropriate restart flag (AR bits
0100 to 0109). If the Counter Unit does not
recover normal operation after restarting, replace
it with a new one.
Section 5-2