Mitsubishi Electronics FR-S500 Wiring of RS-485 communication, System configuration examples

Handling of the RS-485 connector

1.7.2Wiring of RS-485 communication

Use the RS-485 connector to perform communication operation from a personal computer etc.

When the RS-485 connector is connected with a personal, FA or other computer by a communication cable, a user program can run and monitor the inverter or read and write to the parameters. For parameter setting, refer to page 130.

•Conforming standard: EIA-485 (RS-485)

•Transmission format: Multidrop link system

•Communication speed: Max. 19200bps

•Overall extension: 500m

Refer to page 130 for the setting related to RS-485 communication operation.

<System configuration examples>

(1) Connection of a computer to the inverter (1:1 connection)

Computer	Station 0				Computer		Station 0
	Inverter				RS-232C		Inverter
	RS-485				connector		RS-485
			RS-232C
RS-485	connector		cable			Max. 15m	connector
interface/				RS-232C RS-485
terminal				converter				RJ-45 connector 2)
		RJ-45 connector 2)
	10BASE-T cable 1)					10BASE-T cable 1)

Computer-inverter connection cable

Refer to the following for the cable (RS-232C⇔RS-485 converter) for connection of the computer having the RS-232C interface with the inverter.

Example of product available on the market (as of April, 2004)

Model	Maker
FA-T-RS40 *	Mitsubishi Electric Engineering Co., Ltd.

*The converter cable cannot connect two or more inverters (the computer and inverter are connected on a 1:1 basis). Since the product is packed with the RS- 232C cable and RS-485 cable (10BASE-T + RJ-45 connector), the cable and connector need not be prepared separately.

REMARKS

Refer to the following when fabricating the cable on the user side.

Example of product available on the market (as of April, 2004)

	Product	Model	Maker
1)	10BASE-T cable	SGLPEV-T 0.5mm × 4P	Mitsubishi Cable Industries, Ltd.
		* Do not use pins No. 2, 8 (P5S).
2)	RJ-45 connector	5-554720-3	Tyco Electronics Corporation

42