Rockwell Automation 1785 PLC-5 User Manual download pdf (Page 49)

1785-6.5.19 November 1998

Appendix

Status LED Error Codes

Interpreting LED Error Codes When the status LED blinks red, it signals that a hardware or software

fault has been detected and it reports that error via a code. This code

is a two-digit fault code signalled by a flash sequence. First, the LED

begins the sequence with ten rapid flashes. Then the LED signals the

first digit of the code by a number of slow flashes. Approximately

two seconds after the LED displays the first digit, the LED displays

the second digit. This sequence repeats itself until the module is either

reset or replaced.

Code Description

01 General 68000 test failure

02 Bus error

03 Address error

04 Illegal instruction

05 Divide by zero

06 CHK instruction

07 TRAPV instruction

08 Privileged instruction

09 Trace trap

10 Line 1010 instruction

11 Line 1111 instruction

12 Hardware breakpoint

13 Coprocessor violation

14 Uninitialized interrupt

15 Format error

16 Autovector interrupts

24 Spurious interrupt

25 TRAP in instruction

26 Unassigned user

27 Unassigned reserved

31 OS area checksum not valid

32 Static RAM self-test failed

33 Jump table wrong

1 2 ... 44 45 46 47 48 49 50 51 52 53 54

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Rockwell Automation 1785 PLC-5 User Manual Page 49