5

The PLC and I/O Fault Tables in a GMR System

Faults and alarms from I/O devices, Bus Controller faults, and bus faults are automati- cally logged into the Series 90±70 PLC'sI/OFault Table. Faults can be displayed with the programmer in either On±Line or Monitor mode.

PROGRM TABLES STATUS

 

LIB

SETUP

FOLDER UTILTY PRINT

1plcrun 2passwd 3plcflt 4io flt

5plcmem 6blkmem 7refsiz 8sweep

9clear 10zoom

02 481200 00301010200 0A02 01 01 02 9B03010000000000000000000000000000000000000

>

 

 

 

 

 

 

 

I / O

 

F A U L T T A B L E

 

 

TOP FAULT DISPLAYED: 0007

 

TABLE LAST CLEARED: 09±21 11:22:17

TOTAL FAULTS: 0007

 

ENTRIES OVERFLOWED: 00000

FAULT DESCRIPTION: SHORT IN USER WIRING

PLC DATE/TIME: 10±14 10:05:13

FAULT

CIRC

REFERENCE

FAULT

FAULT

DATE

TIME

LOCATION

NO.

ADDR.

CATEGORY

TYPE

M±D

H: M: S

___________ _____ _________ ___________________ ________________ _____ ________

0.3.1.1

 

%QI 00017

FORCED CIRCUIT

03±08 11:23:16

0.3.1.1

 

%QI 00017

UNFORCED CIRCUIT

03±08 11:23:16

0.3.1.1

 

%QI 00017

FORCED CIRCUIT

03±08 11:23:16

0.3.1.1

1

%Q

00019

CIRCUIT FAULT

DISCRETE FAULT 03±08 11:23:16

0.3.1.1

 

%QI 00017

FORCED CIRCUIT

03±08 11:23:16

0.3.1.1

3

%Q

00017

CIRCUIT FAULT

DISCRETE FAULT 03±08 11:23:16

0.3.1.1

2

%Q

00018

CIRCUIT FAULT

DISCRETE FAULT 03±08 11:23:16

ID:

RUN/OUT EN

3ms SCAN ONLINE

D:\P060\GMRSYS

PRG:SYS3

REPLACE

 

 

ACC: WRITE LOGIC

LOGIC EQUAL

The same fault table features are available in a GMR system, with the following additional types of messages:

HAutotest fault messages (I/O Fault Table)

HDiscrepancy fault messages (I/O Fault Table)

HPLC Fault Table messages for GMR

More fault information can be displayed by pressing CTRL/F, as described on the next page.

Clearing the Fault Tables in a GMR System

Although the Fault Tables seem to operate as they would in a non-GMR system, they are actually controlled by the GMR software, not the PLC firmware. Therefore, in a GMR application, the fault tables must be monitored and cleared from the application program logic.

Caution

Use these %M references to clear the PLC Fault Tables. Do not use the Logicmaster F9 key to clear the Fault Tables.

HTo clear the PLC Fault Table in a single PLC, set reference %M12259 to 1 for at least one PLC sweep in that PLC.

HTo clear the PLC Fault Table in all PLCs, set reference %M12264 to 1 for at least one PLC sweep in any PLC.

HTo clear the I/O Fault Table and corresponding fault contacts in all PLCs, set reference %M12258 to 1 for at least one PLC sweep in any PLC.

GFK-0787B

Chapter 5 Diagnostics

5-15

Page 75
Image 75
GE GFK-0787B user manual PLC and I/O Fault Tables in a GMR System, Clearing the Fault Tables in a GMR System