Epson RC90 Manual page 30

2. Installation
Trunk Line and Drop Line
Trunk line is a backbone cable of DeviceNet network with terminating resistors on the
both ends.
Drop line is a branch of the trunk line.
For DeviceNet, 5-wire cables are used for trunk lines and drop lines. Commercially
available DeviceNet cables can be used. There are two types of DeviceNet cables: Thick
cable and Thin cable. Environment-resistant cable and flexible cable are available. For
details of cables, see ODVA's Web site (http://www.odva.org/).
Thick Cable
Shield Wire
Communications Cable Signal
Signal wire
Power wire
Shield wire
18
Terminating
resistor
Trunk Line
11.2 to 12.1 mm outside diameter
Braid Shield
Signal Wire
(Blue/White)
Power Wire
(Red/Black)
Wire Type Color
Blue
White
Red
Black
-
Terminating
resistor
T-branch
Drop Lines.
- No limits on the number of T-branch
- Limits on the length of drop lines
Thin Cable
Shield Wire
Details of Signal
Signal
Signal
Communications Power Positive
Communications Power Negative
Shield
RC700 / RC90 Option Fieldbus I/O Rev.14
6.9 mm outside diameter
Braid Shield
Signal Wire
(Blue/White)
Power Wire
(Red/Black)
Wire Identity
Low CAN L
High CAN H
V+
V−
S