5

Displaying Additional Fault Information About I/O Faults (with CTRL/F)

Pressing the programmer CTRL/F keys provides more information about a fault. Entries that apply to the GMR system are described below.

Fault Description:

Code (Hex)

Meaning

00

Loss of Device

F0

Digital Input Autotest Fault

F1

Digital Input Discrepancy Fault

F2

Digital Output Autotest Fault

F3

Digital Output Discrepancy Fault

F4

Analog Input Discrepancy Fault

FF

GMRI/OFault

Fault Specific Data:

Lossof Device

Byte 1

= 84 (Hex)

 

 

Bytes 2 ± 5

= Always 0

 

 

 

 

 

DigitalInputDiscrepancy

Byte 1 ± 5

= Always 0

 

 

 

 

InputAutotest

Byte 1

= Master PLC (AA, BB, or CC (Hex)

 

Bytes 2 and 3

= Always 0

 

 

Byte 4

= Fail State :

(01 = input stuck at 0

 

Byte 5

= Always 0

(02 = input stuck at 1

 

 

 

 

 

 

AnalogInputDiscrepancy

Byte 1 ± 5

= Always 0

 

 

 

 

Output Autotest

Byte 1

= Master PLC (AA, BB, or CC (Hex)

 

Bytes 2 and 3

= Always 0

 

 

Byte 4

= Fault type (see below)

 

Byte 5

= Always 0

 

OutputDiscrepancy

Byte 1

= Master PLC (AA, BB, or CC (Hex)

 

Bytes 2 and 3

= Always 0

 

 

Byte 4

= discrepant PLC (AA, BB, or CC (Hex)

 

Byte 5

= Always 0

 

 

 

 

 

AnalogInputDiscrepancy

Byte 1 ± 5

= Always 0

 

 

 

 

GMRI/OFault

Byte 1

= Master PLC (AA, BB, or CC (Hex)

 

Bytes 2 and 3

= Always 0

 

 

Byte 4

= 1 (Logon fault)

 

 

Byte 5

= discrepant PLC (AA, BB, or CC (Hex)

 

 

 

 

Fault Type for Output Autotest

For Output Autotest, the Fault Type byte may have the following content (hex values):

11Block A & B short circuit to 0V

12Block C & D short circuit to +24V

13Block A cannot turn on

14Block B cannot turn on

15Block C cannot turn on

16Block D cannot turn on

17Loaddisconnection

18No Load connection on Block A

19No Load connection on Block B

1A No Load connection on Block C

1B No Load connection on Block D

1C Inconsistent No Load reporting

21Block A switch failed off

22Block B switch failed off

23Block C switch failed off

24Block D switch failed off

25Block A not connected to Block B

26Block C not connected to Block D

27Block A cannot turn off

28Block B cannot turn off

29Block A & B cannot turn off

2A Block C cannot turn off

2B Block D cannot turn off

2C Block C & D cannot turn off

30 Force override (spurious trip)

GFK-0787B

Chapter 5 Diagnostics

5-17

Page 77
Image 77
GE GFK-0787B user manual Fault Description Code Hex Meaning, Fault Specific Data, Fault Type for Output Autotest