Datasheet

p/n 7207r4 485DRCI-0812ds page 2/5
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PRODUCT INFORMATION B&B ELECTRONICS
Package Contents
485DRCI Industrial RS-232 to RS-422/485 Converter
Datasheet
Power Terminal Block (installed)
RS-422/485 Terminal Block (installed)
If any item is missing or damaged, contact B&B
Electronics for a replacement
Special Precautions for
Class 1 Div 2 Environment
Special Instructions for Installation and Operation in a
Class 1 DIV 2 Environment.
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 Electrical Code, NFPA70] and in accordance
with the local authority having jurisdiction.
2. WARNING – EXPLOSION HAZARD: SUBSTITUTION
OF COMPONENTS MAY IMPAIR SUITABILITY FOR
CLASS 1, DIVISION 2.
3. WARNING – EXPLOSION HAZARD: WHEN IN
HAZARDOUS LOCATIONS, TURN OFF POWER
BEFORE REPLACING OR WIRING MODULES
4. WARNING – EXPLOSION HAZARD: DO NOT
DISCONNECT EQUIPMENT UNLESS POWER HAS
BEEN SWITCHED OFF OR THE AREA IS KNOWN TO
BE NON-HAZARDOUS.
5. WARNING – THIS APPARATUS IS SUITABLE FOR
USE IN CLASS 1, DIVISION 2, GROUPS A, B, C, AND D,
OR UNCLASSIFIED LOCATIONS.
Front Panel
1
Power TB
2 Position, Removable
2
RD LED
Red, Flashes when RS-422/485
Data Received
3
DB9 F
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
DIP Switch (SW1)
Pos
ON
OFF
1
RS-485
RS-422
2
Half Duplex
Full Duplex
3
2-Wire
4-Wire
4
2-Wire
4-Wire
5
Termination In
Termination Out
6
TX Bias In
TX Bias Out
7
RXBias In
RX Bias Out
8
2400 baud
9
4800 baud
10
9600 baud
11
19.2 k baud
12
38.4 k baud
RS-232 DB9F (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)
---
1. DB9 Female Connector is DCE.
2. Pin 2 (RD) is the Converter’s RS-232 Data Output.
3. Pin 3 (TD) is the Converter’s RS-232 Data Input.
4. Pins 1, 4, and 6 (DCD, DTR, and DSR) are
jumpered together internally.
5. Pins 7 and 8 (RTS and CTS) are jumpered
together internally.