Moxa Technologies RS-232/422/485 to Fiber Converter dimensions Switch Settings, LED Description

Connecting 2-wire RS-485 Serial Devices

Data+	D+	RS
Data-	D-	-			485
GND	GND	485	Rx	Tx		GND	GND
			Tx	Rx	-	D-	Data-
					RS	D+	Data+
Serial Copper	TCF-142			Fiber	TCF-142		Copper Serial
Device							Device

Connecting RS-232 Serial Devices

Wavelength	TCF-142-S:	1310 nm
	TCF-142-M:	850 nm
TX Output	TCF-142-S:	> -5 dBm
	TCF-142-M:	> -5 dBm
RX Sensitivity	TCF-142-S:	-25 dBm
	TCF-142-M:	-20 dBm
Point-to-Point Transmission	Half or Full duplex
Multi-drop Transmission	Half duplex, fiber ring
Environmental
Operating Temperature	0 to 60°C (32 to 142°F), 5 to 95 % RH

DTR
DSR
RTS
CTS
PC Rx	Tx	RS-
Tx	Rx
		232
GND	GND

Copper

TCF-142

6. Switch Settings

				DTR
				DSR
				RTS
				CTS
Rx	Tx	232	GND	GND
			Rx	Tx
		-
Tx	Rx	RS	Tx	Rx
	Fiber	TCF-142		Copper Serial
				Device

Extended Operating	-40 to 75°C (-40 to 167°F)
Temperature (for -T models)
Storage Temperature	-20 to 85°C (-4 to 185°F), 5 to 95 % RH
Power
Input Power Voltage	12 to 48 VDC *
Power Line Protection	1 KV Burst (EFT), EN61000-4-4
	1 KV Surge, EN61000-4-5
Reverse Power Protection	Protects against V+/V- reversal
Over Current Protection	Protects against 2 signals shorted together: 1.1A
Power Consumption	100 mA at 12 VDC
Mechanical
Dimensions (W × D × H)	67 × 100 × 22 mm

There are 4 DIP switches on the top end of the TCF-142. SW1 and SW2 are used to set the serial interface. SW3 is used to enable or disable the 120 Ω termination resistor. SW4 is used to enable “Ring” mode or enable “Point to Point” mode.

								Built-in 120 Ω	SW3
			ON					Terminator
			1	2	3	4		Enable	ON
								Disable	OFF
Serial Connection	SW1					SW2			SW4
RS-232		ON				OFF		Ring mode	ON
								Point to Point
RS-422	OFF					OFF			OFF
RS-485 4-wire	OFF					OFF		mode
RS-485 2-wire	OFF						ON

ATTENTION

For Fiber Ring Users:

To avoid problems when setting up a fiber ring, each TCF-142 unit making up the ring must be powered down and set to “Ring mode.” Next, make sure all cables are connected properly, and then power up all devices connected to the ring. After powering up the TCF-142 units, if the Rx LEDs of the converters glow continuously, power down and then power up ONE of the TCF-142 units in the ring to return the network to normal operation.

NOTE “Ring Mode” can only be sued for half-duplex applications (e.g., RS-485 multi-drop communication).

The DIP switch array called DIP-2 is located inside the TCF-142. DIP-2 has two DIP switches used to adjust the pull high/low resisters.

NOTE: SW1 and SW2 should be set both to ON, or both to OFF.

Pull High/Low Resister	DIP-2 SW1	DIP-2 SW2
150K (default)	OFF	OFF
1K	ON	ON

NOTE When termination is enabled, we recommend using the 1K (ON/ON) setting.

7. LED Description

There are 3 LEDs on the front panel of the TCF-142.

LED	Color	Function
PWR	Red	Steady ON: Power is ON
Fiber Tx	Green	Blinking when fiber is transmitting data
Fiber Rx	Orange	Blinking when fiber is receiving data

8. Specifications

Model Name	TCF-142-S, TCF-142-S-T,
	TCF-142-M, TCF-142-M-T
Serial Communication
Signals for RS-232	TxD, RxD, SGND
Signals for RS-422	TxD+, TxD-, RxD+, RxD-, SGND
Signals for 4-wire RS-485	TxD+, TxD-, RxD+, RxD-, SGND
Signals for 2-wire RS-485	Data+, Data-, SGND
Baudrate	300 bps to 921.6 Kbps
Surge protection	15 KV ESD
Fiber Communication
Connector type	ST
Distance	TCF-142-S: Single mode fiber for 40 km
	TCF-142-M: Multi mode fiber for 5 km
Support Cable	TCF-142-S:
	8.3/125, 8.7/125, 9/125 or 10/125 μm
	TCF-142-M:
	50/125, 62.5/125, or 100/140 μm

	90 × 100 × 22 mm (including ears)
Material	Aluminum (1 mm)
Gross Weight	140g
Regulatory Approvals
CE	Class B
FCC	Part 15 sub Class B
TÜV	EN 60950
UL	UL 60950
EMI	EN55022 1998, Class B
EMS	EN61000-4-2 (ESD), Criteria A, Level 2
	EN61000-4-3 (RS), Criteria A, Level 2
	EN61000-4-4 (EFT), Criteria A, Level 2
	EN61000-4-5 (Surge), Criteria A, Level 3
	EN61000-4-6 (CS), Criteria A, Level 2
Free fall	IEC 60068-2-32

WARNING

1.This unit is not meant to be sold to consumers. It will only be shipped to manufacturers or factories.

2.The DC source should come from an external adapter or 12 to 48 VDC source (not from DC mains) by using a transfer device.

3.This unit should be installed or set up by a qualified service person.

Copyright © 2006

Moxa Technologies Co., Ltd.

All rights reserved.

Reproduction without permission is prohibited.

Tel: +886-2-8919-1230 www.moxa.com

Fax: +886-2-8919-1231 support@moxa.com

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