Host/Tms Communications; Com 1 - Rs-485 4-Wire - Host/Tms Communications; Figure 4.1 Fcm / Pcm Connections; Figure 4.2 Rs485 4-Wire, Host To A Single Multiload Ii/ Rcu Ii (Recommended) - Toptech MultiLoad II DIV-2 Installation Manual

MultiLoad II
COM 0
TDA
TDB
RDA
RDB
4.2.2

Host/TMS Communications

A host/ TMS computer system can be connected to the MultiLoad II/ RCU II in various ways :
- RS485 4-wire on COM 1
- RS485 2-wire on COM1
- RS232 on COM1
- Ethernet on the ethernet port
4.2.2.1

COM 1 - RS-485 4-wire - Host/TMS Communications

A host/ TMS computer system can be connected to the MultiLoad II/ RCU II via RS485 4-wire on
COM 1.
The TD and RD pairs are swapped at the Host/TMS.
Host/TMS
Figure 4.2
MultiLoad II/RCUII can be multridropped on the same communication line using a RS485 – 4 Wire
on COM 1 to communicate to a host system.
Host/TMS
RS485
Figure 4.1
RS485
TDA
TDB
RDA
RDB
RS485 4-Wire, Host to a Single MultiLoad II/ RCU II (recommended)
RCU II #1 COM 1
FCM / PCM
#0
RDA
RDB
TDA
TDB
FCM / PCM Connections
MultiLoad II/
MultiLoad II/ RCU
II COM 1
RDA
RDB
TDA
TDB
MultiLoad II/ RCU
FCM / PCM
#n
RDA
RDB
TDA
TDB
II #n COM 1
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