Emerson Rosemount 700XA Reference Manual page 76

Installation and start-up
June 2022
3. Make the digital input wiring connections on the backplane at TB7.
4. Route digital input/output (I/O) lines away from the sensitive detector lines (on the
76
Figure 4-19: TB7 on the backplane
Note
The discrete digital input terminals on the backplane are self-powered. Devices
connected to the digital input will be powered by the GC's dedicated isolated 24 V
power supply.
Note
The discrete digital input terminals are optically isolated from the GC's other
circuitry.
left side of the backplane) and away from the analog inputs and outputs.
There are connections for five digital inputs on the backplane at TB7, as indicated in
Table 4-2.
Table 4-2: Discrete digital inputs at TB7
TB7 Function
Pin 1 Digital input 1
Pin 2 Digital input return
Pin 3 Digital input 2
Pin 4 Digital input return
Pin 5 Digital input 3
Pin 6 Digital input return
Pin 7 Digital input 4
Pin 8 Digital input return
Reference Manual
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