User`s manual

Watlow Series SD ■ 19 ■ Chapter 2 Install and Wire

Ethernet Gateway

The EM00-GATE-0000 is a bridge that allows up

to 32 Watlow controllers to be directly connected to

an Ethernet network.

The gateway provides a bridge for Modbus mes-

sages between the Ethernet bus and EIA-485 or

EIA-232 links. The Gateway supports full product

configuration monitoring and configuration of run-

time parameters via MODBUS TCP over TCP/IP

using a software package such as Watlow’s

WATVIEW™.

The Series SD can be configured using WATVIEW

with or without the EM Gateway. Enhancements

are planned for the EM Gateway.

For more information, go to www.watlow.com and

search on EM Gateway.

Note: The 32 controller maximum is a functional limitation of the

Ethernet Gateway.

Note: The EM Gateway does not currently support the Series SD

profiling version.

Figure 19a — Connecting to the Watlow EM Gateway

(Ethernet to EIA/TIA 485 Serial Modbus connection).

Controllers must be wired in a daisy chain configuration.

Note: UL Approved, Class 2, power supply required as EM

Gateway power source: 24VÎ (dc), part 0830-0474-000.

T+/R+

T-/R-

Ethernet

RJ45

24Vı (ac/dc)