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Figure 4.3 RS-485/RS-422 Schematic
Please note that different companies use different terminology. For example, some use TxA and TxB to
describe 2- wire RS-485 connections. Some use Tx+ and Tx-. In general. TxA=Tx- and TxB=Tx+
For 2-wire RS-485, use Pin#7 = (+) and Pin#8 = (-).
Host Connections-TCP/IP over Ethernet via RJ-45 Shielded Jack
Ethernet
Figure 4.4 Ethernet Connections
ETHERNET COMMUNICATIONS
Ethernet communications can be established at either 10 BASE-T or 100 BASE-TX. The
Gateway’s RJ45 jack (Figure 4.4) is wired as a NIC (Network Interface Card). For example,
when wiring to a hub or switch use a straight-through cable, but when connecting to another
NIC use a crossover cable. Default IP Address is 192.168.1.10
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