— 4 — — 5 — — 6 —
Connecting RS-422 and 4-wire RS-485 Serial Devices
PC
RS-422/485
Rx
Tx Rx
Tx
RS-422/485
Tx-
Tx+
Rx-
Rx+
GND
R-
R+
T-
T+
GND
TCF-142
TCF-142
Serial
Device
T-
R+
R-
GND
T+
Rx-
Tx+
Tx-
GND
Rx+
Copper CopperFiber
Connecting 2-wire RS-485 Serial Devices
PC
RS-485
Rx
Tx Rx
Tx
RS-485
GND
Data-
Data+
GND
D-
D+
TCF-142
TCF-142
Serial
Device
D-
GND
D+
Data-
GND
Tx-
GND
Data+
Copper CopperFiber
Connecting an RS-232 Serial Device to a PC
PC
Tx
Rx
GND
Copper CopperFiber
RS-232
Rx
Tx Rx
Tx
GND
Rx
Tx
RS-232
Tx
GND
CTS
RTS
DSR
DTR
Rx
Tx
Rx
CTS
RTS
DSR
DTR
GND
TCF-142
TCF-142
Serial
Device
6. Switch Settings
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
SW4
Ring mode ON
Point to Point mode OFF
Two additional DIP switches (SW1 and SW2) are located inside the
TCF-142. These switches are used to configure the pull high/low resistors.
Note that SW1 and SW2 must both be configured to ON or both must be
configured to OFF.
TCF-142-M/S-SC TCF-142-M/S-ST
Pull High/Low Resistor SW1* SW2*
150K (default) OFF OFF
1 K ON ON
* These DIP switches are located inside the TCF-142.
NOTE We recommend setting SW1 and SW2 to the 1 K option
(ON/ON) when termination is enabled.
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 Names
TCF-142-M-ST
TCF-142-M-SC
TCF-142-S-ST
TCF-142-S-SC
TCF-142-M-ST-T
TCF-142-M-SC-T
TCF-142-S-ST-T
TCF-142-S-SC-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 or SC
Distance TCF-142-S series:
Single mode fiber for 40 km
TCF-142-M series:
Multi mode fiber for 5 km
Cable Specifications TCF-142-S series:
8.3/125, 8.7/125, 9/125 or 10/125 μm
TCF-142-M series:
50/125, 62.5/125, or 100/140 μm
Wavelength TCF-142-S series: 1310 nm
TCF-142-M series: 850 nm
TX Output TCF-142-S series: > -5 dBm
TCF-142-M series: > -5 dBm
RX Sensitivity TCF-142-S series: -25 dBm
TCF-142-M series: -20 dBm
Point-to-Point
Transmission
Half or Full duplex
Multi-drop Transmission Half duplex, fiber ring
Environmental Limits
Operating Temperature
0 to 60°C (32 to 142°F), 5 to 95 % RH
Extended Operating
Temperature (T models)
-40 to 75°C (-40 to 167°F)
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
Physical Characteristics
Dimensions
67 × 100 × 22 mm
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
Freefall IEC 60068-2-32
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© 2008 Moxa Inc., all rights reserved.
Reproduction without permission is prohibited.
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