Related Manuals for Patton electronics 285
Summary of Contents for Patton electronics 285
- Page 1 RS-232 to RS-485 Interface Converters Revision C and above SALES OFFICE Part# 07M285-B (301) 975-1000 Doc# 047012UB Revised 9/29/93 TECHNICAL SUPPORT (301) 975-1007 http://www.patton.com...
-
Page 2: Radio And Tv Interference
However, there is no guarantee that interference will Communicate between RS-485 devices and RS-232C using the not occur in a particular installation. If the Model 285 does cause inter- Patton Electronics Model 285 Interface Converter. The Model 285... -
Page 3: Setting The Dte/Dce Switch
For your convenience, the Model 285 has an externally accessi- ble DTE/DCE switch (see Figure 2, below). If the device connected to the Model 285 is a modem or multiplexer (or is wired like one), set the switch to "DTE". This setting causes the Model 285 to behave like Data Terminal Equipment and transmit data on pin 2. -
Page 4: Configuration Switch Functions
The table and descriptions below detail the functions of the five configuration switches. Read this information carefully before setting The table below shows you how to set the Model 285's configu- the switches. ration switches to fit several common applications. If you have any... - Page 5 4.1.2 4-WIRE CONNECTION USING RJ-11 OR RJ-45 Once you have properly set the configuration switches, you are ready to connect the Model 285 to your system. This section tells you The RJ-11 and RJ-45 connectors on the Model 285's RS-485 side how to properly connect the Model 285 to the RS-485 and RS-232 are pre-wired for a standard TELCO wiring environment.
- Page 6 If your RS-485 application requires you to connect two pairs of shield at the computer end only to avoid ground loops. A ground wire bare wires to the Model 285, you will need to open the case to access is not necessary for proper operation of the Model 285.
-
Page 7: 2-Wire Connection
DB-25 port of the RS-232 device. After doing so, remember to insert and tighten the two captive connector screws. (Note: If you must use a cable to connect the Model 285 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 8: Specifications
STANDARD "DCE" SETTING DIRECTION Data Rate: Up to 115,200 bps 1- (FG) Frame Ground 2- (TD) Transmit Data To Model 285 Transmit Line: 2, 4 wire unconditioned twisted pair 3- (RD) Receive Data From Model 285 4- (RTS) Request to Send... - Page 9 BLOCK DIAGRAM...