Advantech BB-485DRCI-PH Manual de usuario
www.advantech.com
707 Dayton Road | PO Box 1040 | Ottawa, IL 61350 USA
Phone: 1 (888) 948-2248 | 1 (815) 433-5100
www.advantech.com | E-mail: support@advantech-bb.com
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www.advantech.com
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Document Number: 20BB710-10773-00_r3_485DRCI-PH_1021qsg
Before you begin, be
sure you have the following:
Model BB-485DRCI-PH
3-Way Isolated RS-232 to
RS-422/485 Converter
+ BB-485DRCI-PH Converter
+ 10 to 48 Vdc Power Supply
QUICK START
GUIDE
Connecting a Signal Ground
(common, reference) on the RS-422/485 side.
The specications for most RS-422 and RS-485
devices indicate that the device can withstand a
maximum VCM of -7 Volts to +12 Volts. The function of
the GND connection is to tie the signal grounds of all
nodes on a network to one common ground potential.
This ensures that the common mode voltage cannot
exceed the specied value.
A signal ground is required on Model BB-485DRCI-
PH because it is an optically isolated device. If you do
not have a signal ground (common, reference) on your
RS-422/485 device, you can connect to the DC power
ground of your RS422/485 device.
Caution: Make sure that this is connected correctly.
Note: Do Not use the shield drain wire as the signal
ground between RS-422/485 devices.
SUITABLE FOR USE IN CLASS I, DIVISION 2, GROUPS
A, B, C AND D HAZARDOUS LOCATIONS, OR
NONHAZARDOUS LOCATIONS ONLY.
CONVENANT À L’EMPLOI DANS LES SITES DANGEREUX
DE CLASSE I, DIVISION 2, GROUPES A, B, C ET D, OU
DANS LES SITES NON HASARDEUX SEULEMENT.
WARNING - EXPLOSION HAZARD - SUBSTITUTION OF
ANY COMPONENT MAY IMPAIR SUITABILITY FOR CLASS
I, DIVISION 2.
ATTENTION - DANGER D’EXPLOSION - LA
SUBSTITUTION DE COMPOSANTS PEUT ENTRAÎNER
UNE ADÉQUATION À LA CLASSE I, DIVISION 2.
WARNING - EXPLOSION HAZARD - DO NOT
DISCONNECT EQUIPMENT WHILE THE CIRCUIT IS
LIVE OR UNLESS THE AREA IS KNOW TO BE FREE OF
IGNITABLE CONCENTRATIONS.
ATTENTION - DANGER D’EXPLOSION - LA SUBSTITUTION DE
COMPOSANTS PEUT ENTRAÎNER UNE ADÉQUATION À LA
CLASSE I, DIVISION 2.
Field wiring connections must be made using 105 °C minimum
copper supply wires.
Les connexions de câblage sur site doivent être réalisées en
utilisant des câbles d’alimentation en cuivre de 105 °C minimum.
To be installed in accordance with control drawing 8512r001.
Pour être installé conformément au dessin de contrôle 8512r001.
UL Class 1/Div. 2 Information
7
Troubleshooting
6
For an explanation of RS-485 termination and biasing requirements,
refer to Advantech’s RS-422/485 Application Note. This publication
can be downloaded at: www.advantech.com
Switch position 8 is not used.
Set the DIP Switches
2
COMMUNICATIONS MODE
Switch 1 2 3 4
RS-485 2-Wire Half-Duplex ON ON ON ON
RS-485 4-Wire Full-Duplex ON OFF OFF OFF
RS-422 Full-Duplex OFF OFF OFF OFF
BUILT-IN TERMINATION RESISTOR SWITCH
5
Use Built-in 120Ω Termination ON
Use External or No Termination OFF
Data
LEDs
Power
LED
DB9
Port
Data
LEDs
Terminal
Block
DIP
Switches
10 to 48 Vdc
1.9 W max.
Grounding the unit is recommended.
Connect a grounding wire from the ground lug
to a good source of Earth Ground.
Ground
Lug
BUILT-IN TRANSMIT BIAS RESISTOR SWITCH
6
Use External or No Bias Resistor ON
Use Built-in 1.2KΩ Transmit Bias Resistor OFF
BUILT-IN RECEIVE BIAS RESISTOR SWITCH
7
Use External or No Bias Resistor ON
Use Built-in 1.2KΩ Receive Bias Resistor OFF
TERMINAL RS-485 2-WIRE RS-422/485 4-WIRE
A*** TDA (-)
B*** TDB (+)
CData A (-) RDA (-)
DData B (+) RDB (+)
EGND GND
DIP SWITCH RS-422/485 4-WIRE
1 234567
ON/OFF OFF OFF OFF *** *** ***
Position 1 = ON for RS-485, OFF for RS-422.
Positions 5, 6, 7 are used for termination and biasing.
DIP SWITCH RS-485 2-WIRE
1 2 3 4 5 6 7
ON ON ON ON x x x
Positions 5, 6, 7 are used for termination and biasing.
• Congure for RS-485 four-wire.
• Jumper terminals A to C and B to D.
• Connect a PC to the RS-232 port (see Step 3).
• Using HyperTerminal or a similar program, con-
nect to the appropriate COM port.
• Turn o HyperTerminal local Echo.
• Transmit data. The same data should be re-
turned. When data is sent and looped back, the
TD and RD LEDs will blink on both ports.
LEDs
Power LED Red = ON when power is applied.
Data LEDs Green = LEDs ash when data is present on port.
+
+
Wiring Converter & Device
3
Loopback Test
4
Check LEDs
5
Product Overview
1
DB9 PINOUTS
PIN SIGNAL DIRECTION
1DCD ***
2RD Output
3TD Input
4DTR ***
5GND ***
6DSR **
7RTS ***
8CTS ***
9RI ***
TERMINAL BLOCK
POSITION SIGNAL
AGround
BRDB (+)
CRDA (-)
DTDB (+)
ETDA (-)
RS-485 2-Wire RS-485/422 4-Wire
Your Device Your DeviceBB-485DRCi BB-485DRCi
A
DATA
B (+)
DATA
A (-)
GND
TDA
(-)
C
D
E
B
A
C
D
E
BTDB
(+)
RDB
(+)
RDA
(-)
GND
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