Advantech B+B SMARTWORX 485LDRC9 Quick Start Manual

Product Overview
Top View Bottom View
(RS-232 & Power Side) (RS-422/485 Side)
Terminal Block
Connectors
A – F
DB9 F Pins
Please Note:
Terminal block and DIP switch settings located on product.
1
Connect RS-232 Device
485LDRC9 Your Device 485LDRC9
TD
D E F D
RD
A B C A
GND
DTE
Computer
• Use a straight-through DB9 to DB9 if you are
connecting to a computer (DTE).
• Use a cross-over (null modem) DB9 to DB9 if you
are not connecting to a computer. (DCE)
+
Additional technical notes on RS-232 DTE DCE connections
are available on the B+B SmartWorx website.
2
Set RS-422/485 Converter Side
485LDRC9
G H
Terminal Block
Connectors
K L
G – M
DIP
Switches
1 – 8
RS-485 2-Wire Half-Duplex
RS-485 4-Wire Full-Duplex
RS-422 Full-Duplex
+
Additional RS-422/485 technical notes on are available
on the B+B SmartWorx website.
3
Set the Dipswitch Settings
for Baud Rate
Your Device
TD
E F
RD
B C
GND
+
For baud rates not listed above, see the B+B SmartWorx website.
DCE
Field Device
Termination Switch:
4
Set to OFF (recommended)
2 Wire 485 4 Wire 485/422
Your Device 485LDRC9
DATA
B (+)
J G H J
DATA
A (-)
M K L M
GND
SW-1 SW-2 SW-3
ON ON ON
ON OFF OFF
OFF OFF OFF
SW-6 SW-7 SW-8
2400 OFF OFF ON
4800 OFF ON OFF
9600 ON OFF OFF
19.2K ON ON ON
Use the 120Ω
Built-in Termination
Use External or
No Termination
Switch 5
+
Termination technical notes on are
available on the B+B SmartWorx website.
5
Connect Your Power Supply
Your Device External Power
Supply
RDA
(-)
RDB
(+)
TDA
(-)
TDB
(+)
GND
SW-4
ON
OFF
6
Loopback Test
OFF
• Configure for RS-485 4-wire, 9600 baud.
• Jumper terminals H to L, and G to K.
• Connect a PC to the RS-232 port (see
Step 1).
• Using HyperTerminal or similar program,
connect to the appropriate COM port
(remember to set the baud rate at 9600).
Timeout (MS)
Turn off HyperTerminal local echo.
• Start typing. If you can see the data
4.16
you are typing, you have a good loop-
back. If you cannot, contact B+B
2.08
SmartWorx technical support.
• LED Indicators: Power is ON when power
1.04
is applied. TD flashes when RS-422/485
data is sent. RD flashes when RS-
0.580
422/485 data is received.
7
LED Indicators
Transmit Data (Red)
Receive Data (Red)
Power (Red)
ON
+
OFF
With no devices attached, LEDs should be Off; Power On.
TIPS:
If LEDs are On before devices are attached, it may indicate the
Termination Resistor is On.
Using termination, with power ON, but no devices connected, may cause
the Receive LED to turn ON solid. The loading from the termination may
cause the Receiver Bias to go into an indeterminate state.
Terminal C:
(Ground/V (–)
Terminal F:
V (+)
Converter uses 0.5 W
Set DIP
Switches to:
L
1 ON
2 OFF
K OFF
3
4
OFF
H
5 OFF
6 ON
G
7 OFF
8 OFF
RS-485
4-Wire
Flashing - RS-422/485 data is transmitted
Flashing - RS-422/485 data is received
On - when power applied