2 Nomenclature and Installation
2-10
CJ-series User Defined CAN Unit Operation Manual for NJ-series CPU Unit (W517)
The User Defined CAN Unit has several states. These states are visualized in the figure below. Events
will force the Unit to switch to a different state, these events can be user initialized or caused by system
behaviour (or error conditions detected in the system).
The different states are defined and described in the first table below. In the second table the events are
defined which will force the Unit into a different state. In normal operating mode the Unit is initialized,
and no start-up error occurrs. The states are refreshed during every Unit Cyclic refresh. Changed state
information is reflected as changes in device variables for CJ-series Units.
2-2-5
Unit States
Start
ST1
Initialise hardware
and software
ST3
Not
Configured
Startup error ?
No
Memory Area
Configured ?
No
ST2
Fatal Error
Yes
Yes
Power-on or Reset
ST5
Communicating
ST4
Unit configured
Enable CAN
communication
No
No
Yes
Can bus power
fails
CAN bus off
Yes
Yes
Disable CAN
communication
ST4
Yes
No
Yes
Can bus
powered?
Summary of Contents for CJ1W-CORT21
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Page 140: ...Appendices A 6 CJ series User Defined CAN Unit Operation Manual for NJ series CPU Unit W517...
Page 141: ...Index 1 CJ series User Defined CAN Unit Operation Manual for NJ series CPU Unit W517 I Index...
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