GE 90-30 PLC Series Installation And Hardware Manual page 270

Application Examples
Expansion System Cable Connections
The following example shows cable connections in a system that has expansion baseplates but no
remote baseplates.
PROGRAMMER
Each signal pair on the I/O bus must
be terminated at the end of the I/O
bus with120 ohm resistors. This
ter
mination can be done with the I/O
Bus Terminator Plug (IC693ACC307),
by using the 50 foot (15 meter) cable
(IC693CBL302/314) with built-in termi
nating resistors, or by building a
tom cable with the resistors cus
in the connector at the end of the bus. installed
Figure 10-21. Example of Connecting Expansion Baseplates
Remote and Expansion System Cable Connection Example
The following example shows cable connections in a system that includes both remote and
expansion baseplates. A system can have a combination of remote and expansion baseplates as
long as the distance and cable requirements are followed.
GFK-0356Q Chapter 10 Cables
SERIAL
EXPANSION BASEPLATE
DISCRETE/ANALOG/OPTION
EXPANSION BASEPLATE
DISCRETE/ANALOG/OPTION
EXPANSION BASEPLATE
*NOTE
EXPANSION BASEPLATE
DISCRETE/ANALOG/OPTION
CPU BASEPLATE
C
P
U
DISCRETE/ANALOG/OPTION
IC693CBL300, 3 FT. (1 METER)
IC693CBL301, 6 FT. (1.8 METERS)
IC693CBL302/314, 50 FT. (15 METERS) *
IC693CBL312, 0.5 FT. (.15 METERS)
IC693CBL313, 25 FT. (8 METERS)
* See NOTE
DISCRETE/ANALOG/OPTION
Cables
NOTE
TOTAL MAXIMUM
DISTANCE FROM
CPU BASEPLATE
TO LAST EXPANSION
BASEPLATE IS
50 FEET (15 METERS)
I/O EXPANSION CABLES
I/O BUS
TERMINATOR
PLUG (See *NOTE)
IC693ACC307
10
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