TCF-142-S, TCF-142-M
RS-232/422/485 to Fiber Converter User's Manual
Second Edition, December 2003
1. Overview
Introduction
The TCF-142 series converter is equipped with a multiple interface
circuit that can handle RS-232, or RS-422/485 serial interfaces and multimode or single-mode fiber. TCF-142 converters are used to extend serial
transmission distance up to 2 km (TCF-142-M multi-mode fiber) or up to
20 km (TCF-142-S single-mode fiber). RS-232 or RS-422/485 interfaces
can’t be used to convert to Fiber on the same TCF-142 at the same time.
Why convert serial to Fiber?
Fiber communication not only extends the communication distance, but
also provides many good features as follows:
IMMUNE FROM ELECTRICAL INTERFERENCE: Fiber is not affected
by electromagnetic interference or radio frequency interference. It provides
a clean communication path and is immune to cross-talk.
INSULATION: Optical fiber is an insulator; the glass fiber eliminates the
need for electric currents for the communication path.
SECURITY: Cannot be tapped by conventional electric means and is
very difficult to tap onto optically. Furthermore, radio and satellite
communication signals can easily be captured for decoding.
RELIABILITY & MAINTENANCE: Fiber is immune to adverse
temperature and moisture conditions, does not corrode or lose its signal,
and is not affected by short circuits, power surges, or static electricity.
Reverse Power Protection
The Reverse Power Protection feature provides extra protection against
accidentally connecting the power cables to the wrong terminal. The
converter is designed to automatically detect which power wire is positive
and which is negative, and then adjust the power supply accordingly.
DIP Switch Selectable Terminator
For many products of this type, the termination resistor is set by a jumper
located inside the product’s casing, so that the user must open the casing
to disable or change the resistor’s strength. MOXA offers a better
solution. TCF-142’s terminator is set with a DIP Switch located on the
outside of the converter’s casing.
Auto Baud Rate Detection
TCF-142 incorporates a method for automatically detecting the serial
signal’s baud rate by hardware. This is an extremely convenient feature
for the user. Even if a device’s baud rate changes, the signal will still be
transmitted through the converter without any problem.
2. Features
• Extend RS-232/422/485 transmission distance:
up to 20 km with Single mode—TCF-142-S
up to 2 km with Multi-mode—TCF-142-M
• Convert RS-232/422/485 signal:
to ST Single-mode fiber with TCF-142-S
to ST Multi-mode fiber with TCF-142-M
• Plug & Play
• Compact size
• Decrease signal interference
• Protect against electronic degradation/chemical corrosion
• Support baud rate up to 230.4 Kbps
3. Package Checklist
Before installing the Converter, verify that the package contains the
following items:
Standard Accessory
• The RS-232/422/485 to Fiber Converter
• This User's Manual
• 7-contact terminal block connector x 1
• 3-contact terminal block connector x 1
* Notify your sales representative immediately if any of the above items is
missing or damaged.
4. Dimensions and Appearance
Note: TCF-142 series are hot swappable.
• Wear a grounding device for electrostatic discharge.
• Install the media cable for network connection.
Fig. 1: TCF-142’s dimensions and appearance
5. Wiring example:
Connecting the Power Supply
Before using the TCF-142, you need to connect the power supply. To do so,
connect the power supply to the power supply terminal block located on
the bottom side of TCF-142.
Note: TCF-142 uses a DC power supply.
Serial Device to PC
Fig. 2: Connecting RS-232 device and PC
—1— —2—
—3—
Fig. 3: Connecting RS-422 or 4-wire RS-485 device and PC
Fig. 4: Connecting 2-wire RS-485 device and PC
6. Switch Settings
There are 3 sets of DIP switches on the top of the TCF-142.
Fig. 5: DIP Switch position figure
Serial Connection SW1 SW2
RS-232 ON OFF
RS-422 OFF OFF
RS-485 4-wire OFF OFF
RS-485 2-wire OFF ON
Built-in 120 Ω Terminator SW3
Enable ON
Disable OFF
7. LED Description
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
Fig. 6: LED position figure
8. RS-422/485 circuit diagram
VCC
VCC
VCC
VCC
TXD0A
TXD0B
FRXD
FRXD
RXD0A
RXD0B
U7
SN75HVD07DR
1
2
3
45
6
7
8
R
ENR
ENT
TGND
D+
D-
VCC
U8
SN75HVD07DR
1
2
3
45
6
7
8
R
ENR
ENT
TGND
D+
D-
VCC
R22 150K
R23
120Ω
R30 10Ω
R29 10Ω
R31 10Ω
R32 10Ω
R18
10K
R24 150K
EN485T0
EN485R0
FTXD
EN485R1
TER_N0
TER_N1
9. Specifications
Model Name TCF-142-S, TCF-142-M
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
Baud Rate 300 bps to 230.4 Kbps
Surge protection 15 KV ESD
Fiber Communication
Connector type ST
Distance TCF-142-S: Single mode fiber for 20 km
TCF-142-M: Multi mode fiber for 2 km
Support Cable TCF-142-S:
8.3/125, 8.7/125, 9/125 or 10/125µm
TCF-142-M:
50/125, 62.5/125, or 100/140 µm
Wave length TCF-142-S: 1310 nm
TCF-142-M: 820 nm
Min.TX Output TCF-142-S: -9dBm
TCF-142-M: -16 dBm
Max.TX Output TCF-142-S: -6 dBm
TCF-142-M: -7 dBm
Environment
Operating Temperature
0 - 60°C (32 - 142°F), 5 to 95 % RH
Storage Temperature
-20 – 85°C (-4 - 185°F), 5 to 95 % RH
Power
Input Power Voltage 12 – 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 TCF-142-M: 70mA at 12 VDC
TCF-142-S: 145 mA at 12 VDC
Mechanical
Dimensions (WxDxH) 67 x 100 x 22 mm
90 x 100 x 22 mm (including ears)
Material Aluminum (1 mm)
Gross Weight TCF-142-S: 140g
TCF-142-M: 140g
Regulatory Approvals
CE Class B
FCC Part 15 sub Class B
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
Copyright 2003
Moxa Technologies Co., Ltd.
All rights reserved.
Reproduction without permission is prohibited.
Tel: +866-2-8919-1230
Fax: +886-2-8919-1231
www.moxa.com
support@moxa.com.tw
P/N: 18020014201
—4—
—5—
—6—
Loading...