Omron CJ Series User Manual

A-31
Appendices
CJ-series PROFIBUS Master Unit Operation Manual for NJ-series CPU Unit (W509)
A-7 Slave Diagnostics Message
App
 Example of Extended Diagnostics
Below an example of Extended diagnostics data is given, using the definitions above. The 6 manda-
tory bytes preceding them are not shown.
The figure above shows the extended diagnostics of a slave device, which contains:
• Device related diagnostics: One header byte and three device specific diagnostics bytes are
shown in this example. The contents of the diagnostics is device specific.
• Module related diagnostics: One header byte and three module diagnostics bytes. The first of
three bytes indicates pending diagnostics in module1, the next byte indicates pending diagnostics
in module14.
• Channel related diagnostics: Two channel related diagnostics entries are shown: One for module
1 and one for module 14. In module 1, Input channel 4, has detected an overload. In module 14,
channel 8, has detected an high-limit exceeded event.
76543210
0 0 0 0 0 1 0 0
0 1 0 0 0 1
1 0 0 0 0 0 0 1
Device specific
diagnostics field
of length 3
1
1
1
0 1 0 0 0 1 0 0
0 1 1 0 0 1 0 0
1 0 0 0 1 1 1 0
0 0 0 0 1 0 0 0
1 0 0 0 0 1 1 1
Module 1 has diagnostics
Module 14 has diagnostics
Header byte
Channel 4 (Input)
Channel 8
Overload, bit oriented
High Limit exceeded, byte oriented
Device specific contents
0
Device related diagnostics:
Module related diagnostics:
Channel related diagnostics:
Channel related diagnostics:
Header byte
Module 1
Module 14

Omron CJ Series Specifications

General

Brand	Omron
Model	CJ Series
Category	Controller
Language	English