Two-Wire Type Connection - Mitsubishi Electric 800 Series Instruction Manual

NOTE
• For branching, connect the wires as shown below.
To computer ground
To computer receive
To computer send
3.4

Two-wire type connection

• If the computer is 2-wire type, a connection from the inverter can be changed to 2-wire type by passing wires across
reception terminals and transmission terminals of the RS-485 terminals.
NOTE
• A program should be created so that transmission is disabled (receiving state) when the computer is not sending and
reception is disabled (sending state) during sending to prevent the computer from receiving its own data.
GND TXD RXD
Computer
Transmission
enable
Reception
enable
SG
GND TXD RXD
To receiving terminal
of the next inverter
To sending terminal
of the next inverter
To next inverter
To earth (ground)
terminal
Inverter
TXD+
TXD-
RXD+
RXD-
Pass a wire
SG
WIRING AND CONFIGURATION
3
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