Table of Contents
Advertisement
Quick Links
Download this manual
See also:
User Manual
Advertisement
Table of Contents
Related Manuals for Patton electronics 2085
Summary of Contents for Patton electronics 2085
-
Page 1: User Manual
USER MANUAL MODEL 2085 High Speed RS-232 to RS-485 Interface Converter SALES OFFICE Part# 07M2085-D (301) 975-1000 Doc# 047033UD Revised 4/15/97 TECHNICAL SUPPORT C E R T I F I E D (301) 975-1007 An ISO-9001 http://www.patton.com Certified Company... -
Page 2: Warranty Information
However, there is no guarantee that interference will not occur in a particular installation. If the Model 2085 does cause interference to radio or television reception, which can be... -
Page 3: General Information
“echo”. RTS/CTS delay may be set for “no delay” or 8 mS. The Model 2085 is equipped with either male or female DB-25 for RS-232 connection. Options for twisted pair connection include terminal blocks with strain relief, RJ-11, RJ-45 and DB-25 male or female. -
Page 4: Dip Switch Configuration
For your convenience, the Model 2085 has an externally accessible DCE/DTE switch. If the device connected to the Model 2085 is a modem or multiplexer (or is wired like one), set the switch to “DTE”. This setting causes the Model 2085 to behave like Data Terminal Equipment and transmit data on pin 2. -
Page 5: Configuration Switch Applications
Low (120 Ohm) High (16 kOhm typical) S1-7 and S1-8: 2-Wire/4-Wire Modes Switches S1-7 and S1-8 are set together to determine whether the Model 2085 is in 2-wire or 4-wire operating mode. Note: 2-wire mode is half-duplex only. S1-7 S1-8... -
Page 6: Installation
4.0 INSTALLATION Once you have properly set the configuration switches, you are ready to connect the Model 2085 to your system. This section tells you how to properly connect the Model 2085 to the RS-485 and RS-232 interfaces, and how to operate the Model 2085. - Page 7 4.1.3 4-WIRE CONNECTION USING TERMINAL BLOCKS If your RS-485 application requires you to connect two pairs of bare wires to the Model 2085, you will need to open the case to access the terminal blocks. The following instructions will tell you how to open the case, connect the bare wires to the terminal blocks, and fasten the strain relief collar in place so that the wires won't pull loose.
-
Page 8: Star Topology
4.1.4 2-WIRE CONNECTION Most RS-485 devices employ a two-wire, half duplex configuration. When using this configuration, be sure to first set the Model 2085 to "two wire" mode—then use only the transmit (XMT) pair as shown on the following page. -
Page 9: Daisy Chain Topology
DB-25 port of the RS-232 device. Remember to insert and tighten the two captive connector screws. (Note: If you must use a cable to connect the Model 2085 to the RS-232 device, make sure it is a straight through cable of the shortest possible length—we recommend 6 feet or less). - Page 10 4- (RTS) Request to Send 5- (CTS) Clear to Send 6- (DSR) Data Set Ready 7- (SG) Signal Ground From Model 2085 Data Term. Ready (DTR) - 20 8- (DCD) Data Carrier Detect Copyright © Patton Electronics Company All Rights Reserved...