Mitsubishi Electric FR-F740 EC Instruction Manual page 409

Parameter
RS485 terminal wiring method
● Wiring of one RS485 computer and one inverter.
PC
● Wiring of one RS485 computer and "n" inverters (several inverters)
Fig. 6-152: Connection to several inverter
Make connections in accordance with the manual of the computer used. Fully check the
terminal numbers of the computer since they change with the model.
Set only the terminating resistor switch of the remotest inverter to the "100Ω" position.
NOTE For branching, connect the wires as shown below.
To computer send
To computer receive
To computer ground
FR-F700 EC
PC
Communication operation and setting
Fig. 6-151:
Connection to one inverter
Station 0 Station 1 Station n
To receiving terminal
of the next inverter
To receiving terminal
of the next inverter
To next inverter
To earth terminal
I001216E
I001217E
6 - 259