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EX500 Serial System
5. How to operate EX500 - GDN1 ( DeviceNet )
5 -1. Connection style
DeviceNet unit can be connected by T branch, Multi branch and Branch line branch.
Total extension length of trunk and stay is different depending on communication speed and thickness of
communication cable.
EX500 series can be connected only by T branch.
Terminating resistance
Multi branch
Branch line
Node
・ ・ ・ ・ Wiring length
Max. length
Thick cable
of
Thin cable
Network
Total length of branch line
Terminating resistance
・ ・ ・ ・ Cable specification
Item
Conductor
section area
Color
Impedance
Propagation
delay
( Maximum )
500kHz : 0.25dB / ｆｔ
Attenuation
rate
125kHz : 0.13dB / ｆｔ
( Maximum )
1.00MHz : 0.40dB / ｆｔ
Conductor
resistance
( Maximum )
Multi branch
Node
Node
Node
125
500m or less
156m or less
Thick cable
Signal
2
0.82mm
Blue ( CAN-L )
White ( CAN-H )
120 ohms±10%
1.36ns / ft
6.9 ohms / 1000ft
T branch
Node
Branch line
Node
Branch line
Communication speed ( k bit / sec. )
250m or less
100m or less
78m or less
Note : Max. length of a branch line is up to 6m.
121 ohms, 1/2W ( TURCK p / n = RSM57TR2 )
Power
2
1.65mm
Red ( 24VDC ),
Black ( 0VDC )
-
-
500kHz : 0.50dB / ｆｔ
-
125kHz : 0.29dB / ｆｔ
1.00MHz : 0.70dB / ｆｔ
3.6 ohms / 1000ft
- 21 -
Main
Terminating resistance
Branch line branch
Max. 6m
Node
Multi
branch
Node
Node
250
100m or less
Thin cable
Signal
2
0.20mm
Blue, White
120 ohms±10%
1.36ns / ft
28 ohms / 1000ft
17.5 ohms / 1000ft
EX## - OME0008
500
39m or less
Power
2
0.33mm
Red, Black
-
-
-
1ft ≒ 0.3048m
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