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RS 485 REAPEATER 6ES7972-0AA01-0X0A MANUAL PLEASE

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Options for Adding Serial Ports The serial port is prevalent on PC's ...


Options for Adding Serial Ports
The serial port is prevalent on PC's as well as scores of industrial, scientific and consumer devices, making it a convenient starting point for communications. Since RS-232 itself is only suited to short connections (50 ft. max.) many applications require that it be adapted to fit requirements. RS-422, typically used for extending RS-232 communications, provides full duplex communications between two devices. It can also provide one way communications from one master to several slaves. RS-485 communications standard allows cable lengths up to 4000 feet. It also provides very high noise immunity. Multidrop connections up to 32 different nodes can be made over a single twisted pair cable along with a signal ground connection.
This article summarizes the choices a system designer has when adding a serial (RS-232, RS-422, or RS-485) communications device. There are many different ways to add additional serial ports to your Desktop PC, Palm, or Laptop PC. USB, PCMCIA, PCI and ISA are some of the methods that will be discussed.
The Universal Serial Bus (USB) provides a high data rate and Hot Swap connection for PCs, providing an easy connection to a wide variety of multimedia and network USB devices. Generally considered to be for home or office use, USB is finding its way into Industrial applications.
PCMCIA Serial Ports are yet another way to add serial ports to a PC that has PCMCIA Slots available. Most Laptops today offer only one (if any at all) DB9 type serial ports. A PCMCIA Serial Card is a good way to add a serial port (or ports) to any laptop that is low on available serial ports (RS-232, RS-422 or RS-485).
PCI Cards are becoming more popular as a way to add serial ports to desktop PC's. PCI type slots are becoming the "norm" in standard PC's today, and PCI Serial Cards are an excellent way to add serial ports. The standard Desktop PC may only come with one serial port standard (if any serial ports at all). PCI Serial Cards use Software Drivers to address the ports to the PC.
ISA Cards are yet another way to add serial ports to the older desktop PC's. ISA type slots are becoming scarce in standard PC's today, but are still an excellent way to add serial ports. The ISA Cards are typically addressed using dip switches and shunts or jumpers to set IRQ's for each port. No Software Drivers are required with ISA style serial cards.
Palm OS PDA's may be connected to RS-422 or RS-485 data circuits using Palm adapters. These adapters offer total portability for collecting data and field service chores. The Palm device and the adapter will usually slip into a shirt pocket. Some models use the PDA's connecting cable, some include a cable and some are cradles that allow the PDA to nest in place and connect directly to the Palm base socket. PalmTerm Freeware allows you to transmit and receive data from the Palm serial port.

on Sep 12, 2010 | Computers & Internet

1 Answer

I need the total wiring diagram for camera [8pin rj11]


8 pin RJ45 (8P8C) male connector
at the camera output

LG LVC-CY100NM Color Security Camera with 8-pin RJ45 (and other cameras for the LSP-M1017M Dual Quad Observation Systems by LG)
Pin
Number Pin
Name Description 8 SPK Speaker (Hot) 7 VID Video Out 6 GRN Ground 5 SPK- Speaker (cold) 4 AO Audio Out/Alarm Out 3 VDC 12VDC 2 N/C RS-485- 1 N/C RS-485+ Note: Pin numbers are labled backwards in the manual (corrected above).
The camera is adaptable for use in any composite video application with the use of a balun.
on the output. I had noise-less video and clean audio across a 350 foot run of cat 5e.

Jan 29, 2013 | LG LVCCy100NM Color Security Camera with...

1 Answer

All lights are on the control panel. The message reads"6700 REVC" can't turn anything on or off.


Most likely a problem in the RS-485 communication between inside and outside Circuit boards.

Email Jandyrepair@gmail.com for Help

Aug 09, 2011 | Jandy Aqualink Rs4 One Touch Control...

1 Answer

I´m looking for a typical


For connecting a RS-232 port with a RS-485 port you need a signal level adapter since they work with different voltage and signal types, RS-232 uses unbalanced signals and RS-485 uses balanced signals, if you want to build your own adapter please check the following schematic as a reference:


josema_sv_0.jpg

Feb 21, 2011 | Computers & Internet

1 Answer

What is error code 99 for a hobart HL 600 mixer?


error 99 stands for communication fault between timer board and the sr drive.there are 5 things that can cause this error.1.rs-485 cable disconnected or malfunction 2.1 con monitordisconnected or malfunction. 3.run/stop wiring disconnected or malfunction. 4.timer board malfunction. 5.sr drive malfunction. hope this helps, dont forget to vote, thanks, monomoy

Jan 29, 2010 | Hobart HL600 Legacy Stand Mixer

1 Answer

What do I need to hook up TM-T88IV to my computer to print out receipts?


Well according to EPSON the ways you can connect your printer to a computer are RS-232C, IEEE 1284 parallel; RS-485; high-speed USB; 10/100Base-T/TX; wireless. However the way they get you is you have to buy the interface from them. Contact EPSON and see what the cheapest one is. If you're only using it from one computer just a simple parallel cable will do the trick. If you live in the Washington DC area feel free to contact me and if you send me a picture of the back of the printer I can tell you what kind of connection it is. I'm at http://www.inovagent.com

Nov 04, 2009 | Epson TM-T88IV Thermal Printer -...

1 Answer

Can't fax


ndustrial RS-485 Guide

www.bb-elec.comRS-485 Industrial Conversion Solutions Made Easy - Free Guide

Jun 02, 2009 | Canon PIXMA MX310 All-In-One Printer

2 Answers

Advantech ADAM-4520 Serial Adapter


The ADAM-4520 is a converter between RS-232 and RS-485/RS-422

Look on this link for the FAQ for the ADAM-4520

http://www.advantech.com.tw/support/sr_detail.asp?SR_ID=1%2D1ZFWI0&SEARCH_TYPE=FAQ

But to answer your question about converting from 9,600 baud to  19,200 baud, I'm not sure I understand. The device should support those data rates. It all depends on what you need to do.

Oct 30, 2007 | Advantech ADAM-4520 (ADAM-4520-D2) Serial...

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