Mitsubishi Electric 800 Series Instruction Manual page 478

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 How to wire RS-485 terminals

• 1 inverter and 1 computer with RS-485 terminals

• Multiple inverters and 1 computer with RS-485 terminals

Make connection in accordance with the Instruction Manual of the computer to be used with. Fully check the terminal numbers of the computer

since they vary with the model.

For the inverter farthest from the computer, set the terminating resistor switch to ON (100 W side).

• For branching, connect the wires as shown below.

To computer ground

To computer receive

To computer send

• To connect multiple inverters using RS-485 distributors, refer to the following. Commercially available products (as of

October 2020)

Product name

RS-485 distributor

BMJ-8-28N (Pins No. 2 and No. 8 are not connected internally.)

(A plug with a terminating resistor is not used.)

DMDH-3PN (Pins No. 2 and No. 8 are not connected internally.)

DMDH-10PN (Pins No. 2 and No. 8 are not connected internally.)

To receiving terminal

of the next inverter

To sending terminal

of the next inverter

To next inverter

To earth (ground)

Manufacturer

HACHIKO ELECTRIC CO., LTD.

Diatrend Corp.

5.12 (N) Operation via communication and its settings

5. PARAMETERS

Chapters

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