4.2.2.3 Com 1 - Rs-232 - Host/Tms Communications; Figure 4.5 Rs485 4-Wire, Host To Multiple Multiload Ii/ Rcu Iis; Figure 4.6 Rs232, Host To A Single Multiload Ii/ Rcu Ii - Toptech MultiLoad II DIV-2 Installation Manual

MultILoad II / RCU II can be multridropped on the same communication line using RS485 – 2 Wire
on COM 1:
Host/TMS
RS485
TDA
TDB
RDA
RDB
Figure 4.5

4.2.2.3 COM 1 - RS-232 - Host/TMS Communications

The Host/TMS Computer System can be connected to the MultiLoad II/ RCU II via RS232 on COM
1.
The TX and RX are swapped at the Host/TMS.
Figure 4.6
RCU II #1 COM
RS485 4-Wire, Host to Multiple MultiLoad II/ RCU IIs
Host/TMS
RS232
TX
RX
GND
RS232, Host to a Single MultiLoad II/ RCU II
MultiLoad II/
RDA
RDB
TDA
TDB
MultiLoad II/
RCU II COM 1
MultiLoad II/ RCU
II #n COM 1
RX
TX
GND
RDA
RDB
TDA
TDB
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