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Chapter 3 – Data Communications Interface
Host/TMS Communications (COM 1 - RS-485 2-wire)
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.
Host/TMS
RS485
TDA
TDB
RDA
RDB
MultiLoad II Mobile Installation Guide: Version C
Host/TMS
RS485
TDA
TDB
RDA
RDB
Figure 3.3
RS485 2-Wire, Host to a Single MultiLoad II/ RCU II
Figure 3.4
RS485 4-Wire, Host to Multiple MultiLoad II/ RCU IIs
MultiLoad II/
RCU II COM 1
MultiLoad II/
RCU II #1 COM
RDA
RDB
TDA
TDB
RDA
RDB
TDA
TDB
MultiLoad II/
RCU II #n COM 1
14
RDA
RDB
TDA
TDB
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