
59
Allocated Words in the DM Area
Section 4-4
4-4-1
Node Status (FL-net Unit to CPU Unit)
Note
Nodes 250 to 255 are reserved for maintenance purposes for FL-net Ver. 2.00
specifications.
The network connection status of remote nodes is stored in the following bits.
1.
Operation (Upper Layer)
The operating status (active/not active) of applications installed at the node
is stored.
2.
Error (Upper Layer)
The error status (error/no error) of applications installed at the node is
stored. These bits turn ON when a fatal or non-fatal error occurs in each
PLC, or when the routing tables are incorrect.
3.
Participation in Network
Network participation status is stored.
The operating status and error status data when not participating is invalid.
(The upper layer status when changing from participating to not participat-
ing is retained.)
4.
Mapping Error
Notifies that the settings do not correctly reflect the network data in the
PLC areas.
4-4-2
Number of Cyclic Transmission Receive Errors (FL-net Unit to
CPU Unit)
The number of times ($0 to $FFFFFFFF) inconsistencies occur in parameters
in communications frames (CBN, TBN, and BSIZE) during cyclic transmission
reception is stored.
These errors may occur due to the network configuration. If this error occurs
frequently, either extend the minimum allowable frame interval using the CX-
FLnet or FL-net Unit Support Software or reduce the number of Units using
cascade connections from the hub.
15
14
13
12
11
10
9
8 7 6 5 4 3 2 1 0
m
m+1
m+62
m+63
Node 3
Node 2
Node 1
(Always 0)
Node 7
Node 6
Node 5
Node 4
Node 248
Node 252
Node 249
Node 253
Node 250
Node 254
Node 251
Node 255
Bits
Meaning
15
11
07
03
1. Operation (upper layer)
ON: Operating; OFF: Stopped
14
10
06
02
2. Error (upper layer)
ON: Error; OFF: No error
13
09
05
01
3. Participation in network
ON: Participating;
OFF: Not participating
12
08
04
00
4. Mapping error
ON: Error; OFF: No error
15
14
13
12
11
10
9 8 7
6 5 4
3 2 1
0
m+64
m+65
Number of cyclic transmission errors H ($0000 to $FFFF)
Number of cyclic transmission errors L ($0000 to $FFFF)
Содержание CJ1W-FLN22
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