Rockwell Automation 1203-SM1 SLC to SCANport Communication Module - Manual (Page 14)

2–2 Installing the SLC to SCANport Module
Publication 1203–5.9 –– October 1996
Determine the Length of the SCANport Cable(s)
To connect your SLC to SCANport module to a SCANport device,
you need to use an Allen–Bradley SCANport cable. The maximum
cable length between any two peripheral devices connected to any
SCANport device cannot exceed 10 meters (33 feet). Therefore, in
Figure 2.1, A+B+C
≤
10 meters and D+B+C
≤
10 meters. However,
you would not add the length of cable E to cables A, B, C, or D
because it connects to a separate SCANport device (or channel).
Figure 2.1
Example of SCANport Cable Lengths
SCANport
Channel 1
Channel 2
Channel 3
CHANNEL 1
CHANNEL 2
CHANNEL 3
SLC 5/01 CPU
PC RUN
CPU Fault
FORCED I/O
BATTERY LOW POWER
A
B
C
D
E
Determine the Placement of the SCANport Cables
You must keep the SCANport cables away from high power cables.
If your SCANport cables are placed too close to the power cables or
run in parallel with power cables, you may introduce noise into the
communications system, which can cause problems to your system.
Make sure you physically mount and connect SCANport products
following the installation guidelines available for each product.