CHAPTER 4– DATA COMMUNICATIONS INTERFACE
29 MultiLoad II/ RCU II Explosion Proof Lite (EXL) Installation Guide - Part # 6070
4.2.2.2 COM 1 - RS-485 2-Wire: Host/TMS Communications
The Host/TMS Computer System can be connected to the MultiLoad II/ RCU II via RS485 2-Wire
on COM 1.
The TD and RD pairs tied together at the Host/TMS and all MultiLoad II/ RCU IIs.
Figure 4.4 RS485 2-Wire, Host to a Single MultiLoad II/ RCU II
MultILoad II / RCU II can be multidropped on the same communication line using RS485 – 2 Wire
on COM 1:
Figure 4.5 RS485 4-Wire, Host to Multiple MultiLoad II/ RCU IIs
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