GFK-0356Q
Chapter 1 Overview of the Series 90-30 PLC
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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.
CPU
GBC
CPU
GBC
Shielded, Twisted-Pair Cable, 7,500
Feet (2,286 Meters) Maximum Length
Series 90-30 PLC
CPU
CMM
CPU
CMM
Serial Cable, 4,000 Feet (1,219
Meters) Maximum Length
Series 90-30 PLC
Series 90-30 PLC
Series 90-30 PLC
Example 1 - GBC
Example 2 - CMM
Figure 1-10. Connecting PLCs Using GBC or CMM Modules