Mitsubishi FR - S500 Instruction Manual page 51

(2) RS-485 communication
Use the RS-485 connector to perform communication operation from a personal
computer etc.
By connecting the RS-485 connector to a computer such as a personal computer,
Factory Automation unit (HMI etc.) or other computer, by the communication
cable, you can operate/monitor the inverter and read/write the parameter values
using user programs. For parameter setting, refer to page 116.
Conforming standard: EIA Standard RS-485
Transmission format: Multidrop link system
Communication speed: Max. 19200bps
Overall extension: 500m (1640.42feet)
<System configuration examples>
1) When a computer having a RS-485 interface is used with several inverters
Computer
RS-485
interface
Distribution
/terminal
terminal
Use the connectors and cables which are available on the market.
Introduced products (as of June, 2000)
*1. Connector :RJ45 connector
Example: 5-554720-3, Tyco Electronics Corporation
*2. Cable :Cable conforming to EIA568 (such as 10BASE-T cable)
Example: SGLPEV 0.5mm
Mitsubishi Cable Industries, Ltd.
(Do not use pins No. 2 and 8 (P5S)).
2) When a computer having a RS-232C interface is used with inverters
Computer
RS-232C
connector
RS-232C
cable
Converter*
RS-485
terminal
Commercially available converter is required. (*3)
Station 1
Inverter
RS-485
connector
(*1)
10BASE-T cable (*2)
Station 1
Inverter
RS-485
connector
Max. 15m
(*1)
Distribution
terminal
10BASE-T cable (*2)
Station 2 Station n
Inverter Inverter
RS-485 RS-485
connector connector
(*1)
4P (Twisted pair cable, 4 pairs),
Station 2
Inverter
RS-485
connector
(*1)
42
(Max. 32 inverters)
(*1)
Termination
resistor
Station n
Inverter
RS-485
connector
(*1)
Termination
resistor