Advantech BB-422PP9TB User manual

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GUIDE
www.advantech.com
707 Dayton Road | PO Box 1040 | Ottawa, IL 61350 USA
Phone: [phone] | Fax: [phone]
www.advantech.com | E-mail: [e-mail]
Document Number: 20BB710-10806-00_r1_BB-422PP9R_BB-422PP9TB_4919qsg
Recommended Accessories
DB9 Male to DB9 Female Cable,
1.8 m length
Model# BB-9PAMF6
Power Supply, 12VDC, 6W,Stripped/
Tinned, International AC Input
(optional for BB-422PP9TB only)
Model# BB-SMI6-12-V-ST
Before you begin, be
sure you have the following:
BB-422PP9R
BB-422PP9TB
RS-422 Converter, Port-Powered
+ RS-232/422 Port-Powered Converter
+ DB9M to DB9F Adapter Cable (not included)
+ 12VDC, 6W Power Supply (not included,
optional for Model BB-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). For further information on biasing, refer to
the “RS-422/485 Application Note” on the website.
External Power Supply Use
(Model BB-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 Advantech B+B SmartWorx
technical support for more information on connecting an
external power supply to the handshake lines.
Model BB-422PP9R - RS-422/485 Biasing Resistors
Model BB-422PP9TB - RS-422/485 Biasing Resistors

BB-422PP9R connections to the RS-422 side of the
converter are made through a DB9 female connector (see
Figure 1).
BB-422PP9TB connections to the RS-422 side of the
converter are made through terminal blocks (see Figure 2).
The RS-422 side of the converter is pinned out as shown
in Table 2:
When connecting to an RS-422 system, the converter
must be connected with proper polarity (see Figures 1 and
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 BB-422PP9R and BB-422PP9TB are port-powered,
two-channel 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 BB-422PP9TB can also be powered externally via
the terminal block. See Step #5.
RS-232
DB9 Female
Connector
RS-422
DB9 Female
Connector
Model BB-422PP9R
Model BB-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 (#BB-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. BB-422PP9R - Connection to an RS-422 System
Figure 2. BB-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 BB-422PP9TB only: Optional external
power via on terminal block, 12-16 VDC @ 40 mA)
Temperature 0 to +70 °C (operating)
Dimensions BB-422PP9R: 6.1 x 3.3 x 1.7 cm
BB-422PP9TB: 8.9 x 3.3 x 1.7 cm