User manual

Toolbox 32 User Manual 1.47d www.cse-semaphore.com/mykingfisher
Page
22
RS485 Wiring Diagram
(Can use Port 2 or an Isolated Serial Option Board for RS485 communications)
Each RTU can transmit/receive to any RTU, one at a time. Up to 32 RTUs (or other RS485 devices) can be
connected to the RS485 bus. Maximum RS485 Wire Length: 600 m.
120
Ohm
LINE+
LINE-
GND
...
120
Ohm
RS485 DEVICE
LINE+ LINE- LINE+ LINE- LINE+ LINE-
EARTH
100
Ohm
1/2 W
GND *
* If GND wire not available, each GND terminal can be tied to EARTH locally using a 100 ohm 1/2 W resistor or directly to
EARTH (if resistors not available).
TX+
TX-
RX+
RX-
GND
CP-xx ISOLATED
SERIAL PORT
TX+
TX-
RX+
RX-
GND
CP-xx ISOLATED
SERIAL PORT
TX+
TX-
RX+
RX-
GND
CP-xx ISOLATED
SERIAL PORT
GND wire can
be tied directly
to EARTH if
100 ohm
resistor not
available
RS422 4-Wire Wiring Diagram
(Can use Port 2 or an Isolated Serial Option Board for RS422 communications)
The master RTU can transmit/receive to any one outstation RTU at any time or each outstation can
transmit/receive to the master RTU, one at a time. Note: outstation RTUs cannot communicate with each
other. Up to 10 RTUs (or other RS422 devices) can be connected to the RS422 bus. Maximum RS422 Wire
Length: 1200 m
100
Ohm
100
Ohm
...
MASTER
Line termination
required
EARTH
100
Ohm
1/2 W
GND wire can
be tied directly
to EARTH if
100 ohm
resistor not
available
GND *
* If GND wire not available, each GND terminal can be tied to EARTH locally using a 100 ohm 1/2 W resistor or directly to
EARTH (if resistors not available).
TX+
RX+
TX
-
RX-
GND
OUTSTATION
CP-xx ISOLATED
SERIAL PORT
OUTSTATION
CP
-
xx ISOLATED
SERIAL PORT
CP
-
xx ISOLATED
SERIAL PORT
TX+
RX+
TX
-
RX-
GND
TX+
RX+
TX-
RX
-
GND
Line termination required