B+B SmartWorx 422PP9R, 422PP9TB Quick Start Manuals

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QUICK START
GUIDE

Document Number: 710-10806-00_422PP9R&422PP9TB_2117qsg

Recommended Accessories

DB9 Male to DB9 Female Cable
6 feet (1.8 m) length

# 9PAMF6

12VDC, 6W Power Supply, Stripped/
Tinned, International AC Input

(optional for 422PP9TB only)
# SMI 6 -12-V- ST

Before you begin, be
sure you have the following:

422PP9R

422PP9TB

Port-Powered RS-232 to RS-422 Converter

+ RS-232/422 Port-Powered Converter
+ DB9M to DB9F Adapter Cable (not included)
+ 12VDC, 6W Power Supply (not included,

optional for Model 422PP9TB only

Biasing Resistors

4

The biasing resistors for the RS- 422/RS -485 receiver are

4.7k Ohm resistors. These resistors are labeled R1 and
R2 (See Figure 2). Refer to B&B SmartWorx “RS -422 /485
Application Note” for further information on biasing.

External Power Supply Use
(Model 422PP9TB only)

5

When using an external supply, the supply should be

connected only to specically labeled power inputs (power

jack, terminal block, etc.).

Connecting an external power supply to the handshake lines
may damage the unit. Contact B+B SmartWorx technical
support for more information on connecting an external
power supply to the handshake lines.

Model 422PP9R - RS-422/485 Biasing Resistors

Model 422PP9TB - RS-422/485 Biasing Resistors

422PP9R connections to the RS-422 side of the converter
are made through a DB9 female connector (see Figure 1).

422PP9TB connections to the RS- 422 side of the
converter are made through terminal blocks (see Figure 2).

The RS- 422 side of the conver ter is pinned out as shown
in Table 2:

When connecting to an RS- 422 system, the converter must
be connected with the proper polarity (see Figure 1, Figure

2. When no data is being sent and the driver is enabled,
the RS-232 line is negative and the RS- 422 line TD(A) is
negative with respect to TD(B).

Product Overview

Getting Started

1

Models 422PP9R & 422PP9TB are por t-powered, t wo­channel RS-232 to RS-422 converters that convert TD
and RD RS-232 lines to balanced RS-422 signals and are

congured to transmit in both directions between an RS-232

and RS-422 system.

The converters are powered from the RS-232 handshake
lines DTR and RTS. At least one of these lines must be
present. The converter will work regardless of whether the
lines are high or low. The RS-422 driver and receiver are
always enabled.

(Model 422PP9TB c an also be powered externally via the
terminal block. See Step #5.)

RS-232

DB9 Female

Connector

RS-422
DB9 Female
Connector

Model 422PP9R

Model 422PP9TB

RS-232

DB9 Female

Connector

RS-422
Terminal
Block

RS-232 Pinout Connections

2

Connections to the RS-232 side are made through a DB9
female connector. The RS-232 side is pinned out to connect
directly into the COM port on your PC/computer/laptop or
any other DTE device (see Table 1).

To satisfy the requirements of some software, the RS-232
handshake lines are looped back (tied together). RTS is
connected to CTS, and DTR is connected to DCD and DSR.

Table 1. RS-232 PINOUTS

SIGNAL DB9 FEMALE PIN#

TD 3

RD 2

RTS 7

CTS 8

DTR 4

DSR 6

DCD 1

GND 5

Table 2. RS-422 PINOUTS (#422PP9R)

SIGNAL DB9 FEMALE PIN#

TD A (-) 8

TD B (+) 3

RD A (-) 2

RD B (+) 7

GND 4, 6

RS-422 Pinout Connections

3

Figure 1. 422PP9R - Connection to an RS- 422 System

Figure 2. 422PP9TB - Connection to an RS-422 System

SPECIFICATIONS

Communication RS-422

Data Rate 115.2 kbps maximum

Power

Port-powered from RS-232 handshake lines.
(Model 422PP9TB only: Optional external power
via on termina l block, 12-16 VDC @ 40 mA)

Temperature 0 to 70 °C (operating)

Dimensions

422PP9R: 6.1 x 3.3 x 1.7 cm (2.4 x 1.3 x 0.66 i n)
422PP9TB: 3.5 x 1.3 x 0.7 in (8. 9 x 3.3 x 1.7 cm)