N-Tron SER-485-FXC Quick Start Guide
SER-485-FXC_0710 R1
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SER-485-FXC Fiber Optic Converter
This Quick Start Guide
Additional Items Required but not included
o A 10 to 48 VDC Power Supply.
o Serial Cable
o Multi-Mode Fiber Optic Cable with ST
Connectors (62.5 / 125 micro-meter).
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1. Power, input /output (I/O) wiring must be in
accordance with Class 1 Division 2 wiring methods
[Article 501.10(B) of the National Electric code,
NFPA70] and in accordance with the local authority
having jurisdiction.
2. Maximum ambient air temperature 80° C.
3. WARNING – EXPLOSION HAZARD:
SUBSTITUTION OF COMPONENTS MAY IMPAIR
SUITABLITY FOR CLASS 1, DIVISION 2.
4. WARNING – EXPLOSION HAZARD: WHEN IN
HAZARDOUS LOCATIONS, TURN OFF POWER
BEFORE REPLACING OR WIRING MODULES
5. WARNING – EXPLOSION HAZARD: DO NOT
DISCONNECT EQUIPMENT UNLESS POWER HAS
BEEN SWITCHED OFF OR THE AREA IS KNOWN
TO BE NON-HAZARDOUS.
6. WARNING – THIS APPARATUS IS SUITABLE FOR
USE IN CLASS 1 DIVISION 2, GROUPS A, B, C,
AND D, OR UNCLASSIFIED AREAS.
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1. Power requirements are10 to 48 VDC @ 0.2A Follow polarity
shown on label.
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RS-485 2-Wire
Quick Start Guide
SER-485-FXC
Triple Isolated RS-232 to
Multi-Mode Fiber Converter
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Pre-defined timeouts are set using switches 8 through 11.
Resistor selectable baud rates are set by inserting a
through-hole resistor (R-9) on the circuit board.
Timeout selections are equal to one character time at the
indicated baud rate. Setting the converter to 9600 will
generally work at 9600 and higher baud rates. In RS-422
mode, timeouts are not required.
Put
N-Tron Corp.
820 S. University Blvd. Suite 4E, Mobile, AL 36609
PH: 251-342-2164 · FAX: 251-342-6353
RS-485 2-Wire Continued
RS-422/485 4-Wire
RS-232
Multi-drop Ring
Maximum Converters in a Multi-drop Ring
Baud Rate
RS-232
RS-422/485
≤19.2 kbps
32
32
37.4 kbps
16
24
115.2 kbps
2
8
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1. Configure the converter for RS-232.
2. Set DIP Switch position 12 to OFF.
3. Cross connect the fiber optic transmitter to the fiber optic
receiver.
4. Connect a PC to the serial port.
5. Using hyper terminal or similar program, connect to the
appropriate COM port. Ensure hyper terminal local echo is
off.
6. Transmit data. If the same character string is returned, the
test is good.
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Point-to-Point
SER-485-FXC_0710 R1
N-Tron Corp.
820 S. University Blvd. Suite 4E, Mobile, AL 36609
PH: 251-342-2164 · FAX: 251-342-6353
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