Rockwell Automation 1747-DCM,D17476.8 Direct Communication Module - Manual (Page 24)

Chapter 2
Quick Start for Experienced Users
2–4
To wire the network, a 1/2 watt terminating resistor must be attached across line 1 and line 2 of the connectors at each
end (scanner and last physical device) of the network. The size of the resistor depends on the baud rate and extended
node capability, as shown below:
Baud Rate
Maximum Cable Distance
(Belden 9463)
Resistor Size
Us n xten e
57.6K baud 3048 meters (10,000 feet)
8
W 1 Using Extended
o e apab l t
115.2K baud 1524 meters (5,000 feet)
82
W 1/2 Watt
r Gr r G Node Capability
230.4K baud 762 meters (2,500 feet)
Brown–Green–Brown–Gold
ot Us n
57.6K baud 3048 meters (10,000 feet) 150 W 1/2 Watt
Not Using
xten e o e
115.2K baud 1524 meters (5,000 feet)
150 W 1/2 Watt
Brown–Green–Brown–Gold
Extended Node
Capability
230.4K baud 762 meters (2,500 feet)
82 W 1/2 Watt
Gray–Red–Black–Gold
6. Enter your ladder program. Reference
Define the application requirements. Write and enter the ladder logic program.
Chapter 6
(Programming)
Chapter 8
(Application
Examples)
7. Go through the system start-up procedure. Reference
Power up your system by performing standard start-up procedures as indicated in your processor
manual. No special start-up procedures are required when using the DCM module.
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