User`s manual

DeviceNet (Master) Function
8-4
8
[3] Cable length
(1) Maximum network length
The maximum network length will be the longest of the following:
1. The distance between the two termination resistances.
2. The distance between the two nodes in the network that are the farthest apart.
Ex.
The maximum network length possible will vary, depending on the type of cable used.
- The maximum network length is also limited by the communication speed. See section (3) below.
- When thick and thin cables are mixed in the same network, the following conditions must be met.
A: Thick cable length
B: Thin cable length
(2) Maximum branch line length
The maximum branch line length is 6 m.
- You can make a new branch line from a branch line.
However, the maximum distance between the branch point on the trunk and the end of the most
distant branch line should not be more than 6 m.
Ex.
(3) Communication speed and communication distance
The communication distance will vary, depending on the communication speed.
Termination
resistance
Termination
resistance
Node
Node
Node Node Node
1
2
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1
srotcudnoc5:elbackcihTm005
srotcudnoc5:elbacnihTm001
2
srotcudnoc5:elbacnihTm001
deepsnoitacinummoC htgnelkrowtenmumixaM
s/stibk005m001nahtsselsi)B+A(
s/stibk052m052nahtsselsi)Bx5.2+A(
s/stibk521m005nahtsselsi)Bx5+A(
Branch line length
(Maximum 6 m)
Branch line length
(Maximum 6 m)
Node
Node
Node
-cinummoC
deepsnoita
htgnelkrowtenmumixaM
hcnarB
htgnelenil
fohtgnellatoT
senilhcnarb
elbackcihT elbacnihT
s/stibk005sselrom001
sselrom001sselrom6
sselrom93
s/stibk052sselrom052sselrom87
s/stibk521sselrom005sselrom651