Cpu Communication Ports - GE B90 Instruction Manual
Low impedance bus differential
system
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Also See for B90:
- Instruction manual (510 pages) ,
- Communications manual (532 pages) ,
- Instruction manual (440 pages)
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CHAPTER 3: INSTALLATION
WIRING
Figure 3-18: RS232 faceplate port connection
3
3.3.7 CPU communication ports
3.3.7.1 Overview
In addition to the faceplate RS232 port, there is a rear RS485 communication port.
The CPU modules do not require a surge ground connection.
B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
3-21
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