Connection With A Computer - Mitsubishi Electric FR-A5NR Instruction Manual

COMPUTER LINK FUNCTION

4.2 Connection with a Computer

(1) Connection of one computer and one inverter
Computer Terminals
Signal
RDA Receive data
RDB Receive data
SDA
SDB
RSA Request to send
RSB Request to send
CSA Clear to send
CSB Clear to send
SG Signal ground
FG Frame ground
(2) Connection of one computer and "n" inverters (two or more inverters)
Computer
RDA
RDB
SDA
SDB
RSA
RSB
CSA
CSB
SG
FG
*1. The terminal resistor jumper should only be connected to the remotest FR-A5NR from the computer.
(Terminal resistor: 100Ω)
*2. Connect in accordance with the manual of the computer used.
Note that the computer terminal numbers depend on the model used.
Cable connection and signal direction
Description
Twisted pair cable (0.3mm
Send data
Send data
*2
*2
SG
Station 1
FR-A5NR
FR-A5NR
2 or more)
SDA
SDB
RDA
RDB
RDR
0.3mm 2 or more
SG
Terminal
resistor
jumper
(*1)
SG SG
Station 3
Station 2
FR-A5NR
FR-A5NR
9
*1: Terminal resistor
jumper