
B-64164EN/01 SPECIFICATION 2.CYCLIC TRANSMISSION
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Table 2-1 Local Node State
Item Description
Token monitoring time
error flag
Set when transmission does not terminate
within the token monitoring time (Pa15) set
for the local node.
Initialization error flag Set when an initialization parameter or a
parameter set again is invalid.
Reception wait state
flag
Set when the node enters the frame
reception wait state without receiving any
frame during network initialization.
Duplicate node number
flag
Set when a node having the same node
number as for the local node is detected in
the network.
FA link state: 1 byte
7 6 5 4 3 2 1 0
+1
<1> <2> <3> <4> (Reserved) <5> <6>
<6> Node participation flag (1: Participate)
<5> Communication disable detection flag (1: Detected)
<4> Upper layer operation signal error flag (1: Error)
<3> Common memory data valid flag (1: Valid)
<2> Common memory setting complete flag (1: Complete)
<1> Duplicate address detection flag (1: Duplicate address
detected)
Table 2-2 FA Link State
Item Description
Node participation flag Set when the local node participates in the
network (communicating with another node).
Communication disable
detection flag
Set when communication is disabled because
a device in a different token mode is
detected.
Upper layer operation
signal error flag
Currently, not supported.
Common memory data
valid flag
Set when cyclic data is valid, in other words,
when PMC area allocation is normal.
Common memory
setting complete flag
Set when common memory setting for the
node is completed. This means that this
flag is set when the parameters related to the
common memory setting (Pa11, Pa12, Pa13,
and Pa14) are correct.
Duplicate address
detection flag
Set when a common memory setting for a
node connected to the network is duplicate,
in other words, when the value specified for a
parameter (Pa11, Pa12, Pa13, or Pa14) for
another device is specified for a parameter
related to the common memory setting
(Pa11, Pa12, Pa13, or Pa14).