
INTRODUCTION
I-E96-613A
5 - 1
SECTION 5 - TROUBLESHOOTING
INTRODUCTION
Troubleshooting the INFI-NET to Plant Loop remote interface
modules can be achieved by viewing the contents of the error
counters (faceplate LEDs) and the module status report from
any INFI 90 operator interface. Refer to the product instruction
for the operator interface used for information about accessing
module status reports. The
Function Code Application Man-
ual
also contains information about how to access module sta-
tus information.
ERROR COUNTERS
All INFI-NET communication modules have faceplate LEDs that
serve as error code displays. The NIS module has event and
error counters that are selectable (refer to Tables
and
INNIS01 ERROR CODES
The NIS module halts operation and displays an error code if a
module failure or hardware error occurs. Group A LEDs dis-
play error codes. Table
lists the types of error counters.
Group B LEDs are off when group A LEDs are displaying error
codes. Refer to Table
for a list of error codes and associated
corrective action.
Table 5-1. INNIS01 Error Codes
Code
LED
8
7
6
5
4
3
2
1
Condition
Corrective Action
13
0
0
0
1
0
0
1
1
ROM checksum error
Replace NIS.
16
0
0
0
1
0
1
1
0
Loopback test failure
Replace NIS, check cabling and ter-
mination unit.
31
0
0
1
1
0
0
0
1
Memory or CPU fault
Replace NIS.
32
0
0
1
1
0
0
1
0
Address or bus error
Reset IPT, replace NIS if error con-
tinues.
33
0
0
1
1
0
0
1
1
Illegal instruction
34
0
0
1
1
0
1
0
0
Trace/privilege violation
35
0
0
1
1
0
1
0
1
Spurious/unassigned exception
36
0
0
1
1
0
1
1
0
Divide by 0/checksum/format
error
37
0
0
1
1
0
1
1
1
Trap instruction
38
0
0
1
1
1
0
0
0
Invalid dipswitch setting on NIS Check dipswitch SW1 through SW4.
3E
0
0
1
1
1
1
1
0
NIS/device handshake failure
Verify that dipshunt exists between
NIS and IPT. If dipshunt exists,
replace NIS or IPT.
NOTE: 0 = LED OFF, 1 = LED ON.