3
4
2.0 GENERAL INFORMATION
Thank you for your purchase of this Patton Electronics product.
This product has been thoroughly inspected and tested and is warrant-
ed for One Year parts and labor. If any questions or problems arise
during installation or use of this product, please do not hesitate to con-
tact Patton Electronics Technical Support at (301) 975-1007.
2.1 FEATURES
• Operates asynchronously, point to point or multipoint,
over 2 or 4 wires
• Up to 32 multipoint device drops in a polling environment
• Data rates to 115.2 Kbps
• Passes transmit & receive data
• Operates off 5V power supply
• Operates without “echo”
• Driver controlled as “constantly on”, “controlled by RTS”, or
“controlled by DTR”
• Compact size ( 3.8” x 2.10” x 0.8”)
• Twisted pair connection via strain relief, RJ-11 or RJ-45
• 2500 Vrms Optical Isolation
2.2 DESCRIPTION
The Model 2086 Series High Speed RS-232 to RS-485 Interface
Converter provides exceptional versatility in a compact package. The
Model 2086 Series supports asynchronous RS-232 data rates to 115.2
Kbps over one or two unconditioned twisted pair.
The Model 2086 Series can handle up to 32 terminal drops in a
multipoint polling environment. Carrier may be set to “constantly on” or
“controlled by RTS”, or “controlled by DTR” and the unit operates with-
out “echo”.
The Model 2086 Series is equipped with a DB-25 for the RS-232
connection. Options for twisted pair connection include RJ-11, RJ-45,
or Terminal Block. 2500Vrms optical isolators provide isolation
between the RS-232 and RS-485 interfaces.
3.0 CONFIGURATION
The Model 2086 Series is configured using a four position DIP
switch and two headers. Figure 1 (below) shows the location of the DIP
switch and the two headers on the board.
3.1 DIP SWITCH CONFIGURATION
The DIP switches control the transmit/receive signals on the Model
2086 Series. The table below shows the default configuration of the
switches. Following the default table is a chart showing the different
switch and jumper combinations that the Model 2086 Series has to
offer. Also included in this section is a description of the switches.
+XMT- G -RCV+
ON
OFF
Figure 1. Top View of Model 2086 Series board, showing Dip switch and jumpers
A
A
B
B
DIP SWITCH
JP4
JP3
Power
DIP SWITCH DEFAULT SETTING TABLE
Position
Function
S1
RTS Control
S2
DTR Control
S3
Reserved
S4
Transmitter Control
Default
Switch
Function
off
no RTS control
of transmitter
off
no DTR control
off
n/a
ON
Constantly ON
1
2
3
4
