What If I Need To Cover More Than 700 Feet (213 Meters) - GE 90-30 PLC Series Installation And Hardware Manual

What if I need to cover more than 700 feet (213 meters)?

You can cover much greater distances by using Series 90-30 communications option modules. For
example, Genius Bus Controller Modules (GBC) can communicate at distances up to 7,500 feet
(2,286 meters) over a shielded twisted-pair cable, as shown in Example 1 below. Or, serial
communications with Communications Coprocessor Modules (CMM) using the RS-485 standard
can cover up to 4,000 feet (1,219 meters), as shown in Example 2 below. And virtually unlimited
communication distances can be attained with modems and telephone lines or radio transmitters.
Also, there are numerous networking options available such as Ethernet or WorldFIP.
Figure 1-10. Connecting PLCs Using GBC or CMM Modules
GFK-0356Q Chapter 1 Overview of the Series 90-30 PLC
Example 1 - GBC
Series 90-30 PLC
CPU GBC
Shielded, Twisted-Pair Cable, 7,500
Feet (2,286 Meters) Maximum Length
Series 90-30 PLC
CPU GBC
Example 2 - CMM
Series 90-30 PLC
CPU CMM
Serial Cable, 4,000 Feet (1,219
Meters) Maximum Length
Series 90-30 PLC
CPU CMM
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