SER-485-IC_0710 R2
N-Tron Corp.
820 S. University Blvd. Suite 4E, Mobile, AL 36609
PH: 251-342-2164 · FAX: 251-342-6353
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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°
3.
WARNING – EXPLOSION HAZARD:
SUBSTITUTION OF COMPONENTS MAY IMPAIR
SUITABLITY FOR CLASS 1, DIVISION 2.
4.
WARNING –
EXPLOSION HAZARD:
WHEN IN
HAZARDOUS LOCATIONS, TURNING 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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SER-485-IC Serial Converter
This Quick Start Guide
Additional Items Required but not included
o
A 10 to 48 VDC Power Supply, 0.2A.
o
RS-232 cable. The converter is a DCE device.
o
RS-422/485 Cable.
Put
Quick Start Guide
SER-485-IC
Triple Isolated RS-232 to
RS-422/485 Converter
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Communications
Mode
1
2
3
4
RS-485
ON
ON
ON
ON
2-Wire
Half Duplex
RS-485
ON
OFF
OFF
OFF
4-Wire
Full Duplex
RS-422
OFF
OFF
OFF
OFF
Full
Duplex
Termination Resistor
5
Use the 120Ω
ON
Built in Termination
Use External
OFF
or no termination
Transmit Bias
6
Use the 1.2KΩ
Transmit
OFF
Bias Resistor
Use External or no
ON
Transmit Bias Resistor
Receive Bias
7
Use the 1.2KΩ Receive
OFF
Bias Resistor
Use External or no
ON
Transmit Bias Resistor
3
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Front Panel
1
Power TB
2 Position, Removable
2
RD LED
Red, Flashes when RS-422/485
Data Received
3
DB9 Female RS-232 (Wired DCE)
4
422/485 TB
5 Position, Removable
5
TD LED
Red Flashes when RS-422/485
Data Transmitted
6
Power LED
Red, ON When Power Applied
7
Dip Switch
12 Position
DB9 Female Pin out (DCE)
Pin
Signal
Direction
1
Receive Line Signal Detector (DCD)
---
2
Receive Data (RD)
OUTPUT
3
Transmit Data (TD)
INPUT
4
DTE Ready (DTR)
---
5
Signal Ground (SG)
---
6
DCE Ready (DSR)
---
7
Request to Send (RTS)
---
8
Clear to Send (CTS)
---
9
Ring Indicator (RI)
---
Note: Pin 1, Pin 4, and Pin 6 are tied together internally.
Pin 7and Pin 8 are tied together internally.
RS-422/485 Terminal Block
Terminal
RS-485 2-Wire
RS-422/485 4-Wire
A
GND
GND
B
Data B(+)
RDB(+)
C
Data A(-)
RDA(-)
D
---
TDB(+)
E
---
TDA(-)
