Watlow EZ-ZONE RUI/Gateway - Manual (Page 11)

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Warning:
Use National Electric (NEC)
or other country-specific
standard wiring and safety
practices when wiring and
connecting this controller to
a power source and to elec-
trical sensors or peripheral
devices. Failure to do so may
result in damage to equip-
ment and property, and/or
injury or loss of life.
Watlow EZ-ZONE ® RUI/Gateway • 8 • Chapter 2 Install and Wire
An RUI/Gateway allows for connectivity between dissimilar net-
works. In this case, Ethernet on one side and Standard Bus on the
other.
Wiring a Serial EIA-485 Network
Do not route network wires with pow-
er wires. Connect network wires in
daisy-chain fashion when connecting
multiple devices in a network.
A termination resistor may be re-
quired. Place a 120 Ω resistor across
T+/R+ and T-/R- of the last controller
on a network.
Note:
The RUI without a gateway in-
stalled, can communicate using
Watlows' Standard Bus only.
Note:
Do not route network wires with
power wires.
Note:
Excessive writes through the
gateway to other EZ-ZONE
family controllers may cause
premature EEPROM failure .
For more detail see the sec-
tion entitled “Saving Settings
to Non-volatile Memory .”
com
98
99
CF
CD
CE
B5
D6
D5
power
common
power
power
power
EZ-ZONE ST
ST_ _ - _ _ A _ -_ _ _ _
98 99 CF CD CE B5 D6 D5
Power
Supply
fuse
98 99
Slot C
power
CZ CE CX CY CD CF
T-/R-
T+/R+
common
98
99
CF
CD
CE
power
power
E8
E7
E6
E5
E4
E3
E2
E1
Ethernet
Switch
Standard Bus
Network
EtherNet IP and/or Modbus TCP
Network
PC HMI PLC PLC
T+/R+ T-/R-
T-/R-
T+/R+
EZ-ZONE PM
PM _ _ _ _ _ - A _ _ _ _ _ _
EZ-ZONE RUI/GTW
EZK _ - _ 3 _ _ - _ _ _ _
power
common
T+/R+
T-/R-
EZ-ZONE RMC
RMC _ _ _ _ _ _ _ _ _ A _ _
Standard Bus
Network