Response-word error codes, Pccc command status codes – Rockwell Automation 1785-Vx0B, D17856.5.9 PLC-5 VME VMEbus Programmable Controllers User Manual User Manual

Page 252

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Appendix D

Troubleshooting

D-3

These are errors reported in the response word of the command block
when the command cannot be carried out successfully. The even byte of
the response word describes the type of error and the odd byte describes
the time or situation of occurrence.

Code

Explanation

00FFH

Command successfully completed

0200H

Bad address modifier in command block

0300H

Bad VME address in command block

0400H

Bad command word (word 0)

0500H

Bad data/packet size (word 10)

0600H

Local PCCC queue overflow; PCCC not processed

8000H

VMEbus error

The STS field contains errors found by the remote node receiving the
command. The following table contains error codes (in hex) that you may
find in the STS field and a general description of each.

Code (hex)

Explanation

00

No error

10

Illegal command or format

20

Host has a problem and will not communicate

30

Remote node host is missing, disconnected, or shut down

40

Host could not complete function due to hardware fault

50

Addressing problem or memory protect rungs

60

Function disallowed due to command protection selection

70

Processor is in program mode

80

Compatibility mode file missing or communication zone problem

90

Remote node cannot buffer command

A0

Not used

B0

Remote node problem due to download

C0

Cannot execute command due to active IPBs

D0

Not used

E0

Not used

F0

There is an error code in the EXT STS byte

Response-Word
Error Codes

PCCC Command
Status Codes

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