Review Power Requirements
Review the power requirements of the modules drawing power from the chassis power supply.
1. The fixed 2-slot chassis supports 2 1746-INT4 modules. If combining an
INT4 module with a different type of module, refer to Considerations for a
Fixed Controller in Chapter 3 of the user manual.
2. For a modular system, compute the total load on the system power supply
using the procedure described in the SLC Installation and Operation Manual
for Modular Controllers (publication number 1747-UM011) or the SLC 500
Family System Overview (publication 1747-SO001).
DH-485 channel offers:
• configurable isolation via the 1747-AIC or 1761-NET-AIC interfaces.
• maximum network length of 1219 m (4000 ft).
• RS-485 electrical specifications.
• Belden 9842 or Belden 3106A cable connection between nodes (daisy-chain connection).

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