
2.CYCLIC TRANSMISSION SPECIFICATION B-64164EN/01
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2.3 NODE STATE MONITORING
2.3.1 Allocation of Local Node State
The state of the local node can be monitored by allocating the 8-byte
state code of the local node in the PMC E area or the PMC R area.
Related parameters
<1> Pa20: Local node status
Data structure
Local node information is allocated in the PMC E area or the PMC R
area as follows:
7 0
+0
Local node state
+1
FA link state
+2
Upper layer state
+4
Current RCT value
+6
Local node number
+8
NOTE
1 An 8-byte area is always used
2 When Pa20 (local node status) is not set, local node
information is not posted.
Local node state: 1 byte
7 6 5 4 3 2 1 0
+0
(Reserved)
<1> <2> <3> <4> (Reserved)
<4> Token monitoring time error flag (1: Error detected)
<3> Initialization error flag (1: Error detected)
<2> Reception wait state flag (1: Reception wait state)
<1> Duplicate node number flag (1: Duplicate node number
detected)
Pa20→