Emerson 1420 - Host System Integration

5 Connect to the host system
Procedure
1. Wire the Gateway’s Ethernet 1 (Primary) or Serial Output connection
to the Host System Network or Serial I/O.
2. For serial connections, connect A to A, B to B, making sure all
terminations are clean and secured to avoid wiring connection
problems.
Figure 5-1: Legacy Gateway Terminal Block Diagram
+
+
+
+
+
-
-
-
-
-
A B
S
S
S
S
24 VDC
(nominal)
Power Input
Serial
Modbus
Not Used
Not Used
Not Used
Not Used
Case
(Covered)
S
Ethernet 2
with Power
Ethernet 2
Ethernet 1
(Secondary) (Primary)
Figure 5-2: PoE Terminal Block Diagram
+
- A B
24 VDC
(nominal)
Power Input
Serial
Modbus
Case
S
Ethernet 2
Ethernet 1
(Secondary) (Primary)
CAUTION
Do not connect the Host System to the Ethernet 2 with power
(covered) port on the Gateway to avoid damaging the system.
September 2020 Quick Start Guide
Quick Start Guide 19