Questions tagged [rs232]

RS-232 (also known as EIA RS-232C or V.24) is a standard for serial binary data exchange between a DTE (data terminal equipment) and DCE (Data Communication equipment). It is commonly used in the serial ports of PCs.

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Running Windows XP rs232 software on Windows 10 PC

I have a piece of software that communicates with CNC machines using a usb to rs232 converter. The software communicates perfectly on Windows XP. I had to install the same software in compatibility ...
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RS232 to VGA adapter [duplicate]

I have some devices with an RS232-connection (e.g. a beamer, a TTL-to-RS232-adapter for my NanoPI R1 described here, etc). No i have found a RS232 to VGA adapter: Now i wonder, if I would have this ...
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Configure Serial port for ethernet

I have an unmarked cable that adapts an rs232 serial port to an Ethernet jack. How do I configure my ubuntu 18.04 machine to work with it?
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Weighing Scales connected by RS232 to USB keeps disconnecting

i have some weighing scales with a serial port (RS232) and are connected to Windows 10 PC with a Serial to USB Cable. The scales are detected (COM3) and drivers are installed correctly, and im able ...
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573 views

pyserial RS232 to Ethernet converter? will work?

If I use an RS232 to Ethernet converter like this and connect it to the lan network by transmitting data from a printer or any other serial device, is it possible that I can read the serial ...
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1answer
60 views

Can a single cat5e cable be used to transmit RS232 and 100BaseT?

Ive got a single cat5e cable running from point a to point b. I need to run RS232 and 100BaseT over it. I know i can get 100BaseT over the cable by using only 2 pairs. But can i use the remaining 2 ...
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1answer
26 views

Putty received data only shows after pressing Enter

I am working on an application which pulls data from an RS232-enabled device. I am able to connect to the device using Putty and send queries, however the response is not shown immediately in Putty. I ...
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1k views

Converting USB keyboard to RS232

In my workplace we use an old software that accepts keyboard input, but only from a keyboard that's connected to a COM port. We have an old converter that has a PS2 keyboard input and converts it to ...
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1answer
146 views

How to convert from an EasyLyte RJ-12 connector to and RS-232 serial connector

I have a device with an RJ-12 connector, I need connect to a computer by RS-232. This is document of device: Computer Connection: The EasyLyte systems can be interfaced with an external ...
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1answer
33 views

Cabling between inverter and single board computer

I'd like to interface an inverter with Gateworks GW5220. The inverter has an RS232 port shown below and GW5220 has a 5-pin RS232 Serial interface. The GW5220 serial connector is labeled as follows: ...
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736 views

How Can I Communicate RS485 Device With PC

I'm trying to communicate with a RS485 device with my PC. I connected RS485 device to RS485-RS232 converter. RS485-RS232 converter is connected to the USB-RS232 converter and USB-RS232 converter is ...
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Using an Rj45 to D9 RS232 Adaptor with a laptop to control an RS232 device

I've got an RJ45 to D9 RS232 Adapter that I want to use to control an RS232 device in the following config: Laptop RJ45 Ethernet port -> Cat6 patch lead -> D9 RS232 adapter -> RS232 Device Would ...
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Putty serial port access to RS-232 console showing double character display with USB/Serial cable

I am trying to access a Matrix Sense firewall administration console through its RS-232 interface and the display I get with Putty is weird. The hardware is a PC Engines APU4B4 motherboard. I am ...
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1answer
399 views

Adding RS232(Serial Port) to motherboard

I need to add a RS232(Serial Port) connection to my pc, and unfortunately I'm unable to use RS232 to USB adapter, only direct RS232 connection, I have seen this item: https://www.aliexpress.com/item/...
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Safely Transition from RS232 “Dumb Terminal” to RJ45 Telnet/SSH

An HPUX 11i network, running on new hardware, for what they call “mission critical” operations at a unique business, terminates for the user at Sherwood 7000STs. While functional (and lightning fast ...
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1answer
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Forward shell to serial on Linux

I'm trying to forward a shell to serial (USB to RS232) so I can use an old monochrome CRT terminal. How can I forward a shell to a serial port so the other end can send commands & read output ...
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1answer
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Can non IP data formats over cat5 / 6 (eg. RS232 etc..) damage an IP switch?

Can various data formats can be run over a cat5 / 6 cable with RJ45 ends. These can include (not an exhaustive list) HDbaseT RS232 / RS485 (using an RJ45 to serial adaptor on the end) POE Cat6 (...
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Backup USB connection for Test Cell - USB splitter design?

This is a question for a project I am working on involving an unusual use of some USB equipment. Please see the diagram. Our existing setup consists solely of a single link between the device and the ...
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2answers
144 views

linux high speed character detection rs232

I have to do a code in C to detect the inter-characters time within a rs232 line on linux. Inter-characters time to detect could be 1ms. So I need something to timestamp very quickly an incomming ...
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0answers
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Interfacing With IEC 62056 - 21 port via RS232

I need to read energy meters (electricity prepaid meters or smart meters) information via the optical port in DLMS or IEC 62056-21 using RS232 interface. I already have the optical port and a ready ...
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1answer
537 views

Serial connection recieving continuous junk

I am trying to connect over a serial port to an HP AM867A switch (more broadly it is a Brocade 8gb SAN switch). I got the switch used so I am trying to perform password resets. The switch is running ...
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1answer
267 views

RS232-to-Ethernet adapter configuration not working [closed]

I have a iPocket232 serial RS-232 to Ethernet adapter and whenever I try to configure the settings in a terminal window on Windows 10, it doesn't let me select an option. When I type in an option ...
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2answers
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Does this RS232 Serial Cable require an external Power Supply?

I have a device that supports USB and RS-232 protocols but the device comes with only USB cable. The device works just fine with USB cable, however, I need to use the RS-232. I've purchased RS232 ...
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Relationship of system serial drivers to RS-232

I am trying to strengthen my understanding of serial ports and device drivers. I was told that the serial port standard, RS-232, defines the electrical characteristics and timing of serial port ...
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2answers
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How does a RS-232 to USB converter work?

When I send some data using RS-232 cable a sender and receiver have UART. I can use RS-232 to USB converter to connect some device or other PC to my laptop. Does such converter has inbuilt UART? How ...
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windows 7 - serial port communication, setting stop bits

I have a program which reads/writes to a serial port (com). I suspect that the program sets 2 stops bits for the communication (it has some problems with reading messages). I can't change a ...
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1answer
602 views

Latencies in Ethernet to RS232 adapter

Requirement: I have a software running on my Windows which communicates to an external device using RS232 port. The hardware receives the commands sent from PC and responds back to PC. When using a ...
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1answer
389 views

Finding the address of a control register for a serial port in Ubuntu (or UBOOT)

I'm relatively new to Ubuntu and serial ports. I'm trying to find the address of the control register, that controls serial port 1 in Ubuntu. The Serial Port is using the RS232 method to communicate ...
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1answer
315 views

Lantronix ETS16P: Escape Sequence

I have an Lantronix ETS16P serial terminal server which I have configured to login via telnet and have access to the serial port of my servers, routers, switches. I have done this by configuring a ...
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105 views

Can a RS-232 COM port damage the motherboard's SATA controller?

We have a chromatograph connected to a computer through one of those old COM ports (RS-232 serial port). That COM port is onboard, connected directly to the motherboard's logic. The motherboard has 4 ...
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1answer
125 views

USB to Serial Connection - Danger to Motherboard from Electric Shock?

Last night I setup a machine that talks to our security system over Serial Connection. The serial cable goes through the roof of our building. The machine I setup this one, also hosts important VM's. ...
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725 views

Control Amplifier from Computer via RS232

I got a second hand Rotel RSX-1056 amplifier that I would like to control from my computer (because I don't have the remote). The amplifier has a serial port (RS232) and on the web I was able to find ...
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2answers
688 views

how to connect 2 computers using console cable

I know this is a weird question, however, I have a console (rollover) cable - the one used to connect to network devices' console port (e.g. cisco switches). I'd like to know if it's possible to use ...
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1answer
856 views

Read serial input from RS232 to USB converter

I want to connect a barcode scanner to my PC and read its output from a selfmade program. I know that there are basically two methods of obtaining output from a barcode scanner: As Keyboard Wedge - ...
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1answer
757 views

Forward internet connection over RS-232 Port

I have a Campbell Scientific CR1000 board and have a wireless modem that I plug into the board's RS-232 Port. In order to save data, I would like to forward/bridge my internet connection from my ...
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2k views

Sending commands via serial connection

I've got a Sartorius GD-503 electronic lab scale that I'm trying to work into a control setup. I've got both the regular manual and the data interface description manual. So far I've got my laptop ...
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1answer
523 views

How do I find the Vendor ID of this RS-232 to USB-A 2.0 adapter? [closed]

I need to programmatically allow permissions for this USB device via its vendor ID, but I don't know what its vendor ID is: Does anyone know what the ID is, or how I can discover it?
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1answer
8k views

Receiving data from Serial Port

I want to receive data from RS232 Serial port to my terminal and with a directive to a file. It should be pretty straight forward. cat /dev/ttyS0 cat /dev/ttyS0 > file.txt Before that I've ...
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3answers
741 views

Can USB to RS232 converter completely “mimic” classic RS232 port on motherboard?

I bought notebook few days ago and of course it doesn't have serial port :) I'm interested in satellite technology and most satellite receivers use serial port for communication with computer. That's ...
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2answers
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How to communicate with two PC using RS232

I was just wondering that is this possible to communicate with two computers using RS232 using softwares like docklight and putty. Suppose if i send Hi from on pc will it recive in another PC and ...
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597 views

Linux server to send and receive from RS-232 using socat

I'm trying to bench test a configuration where a Linux server will send and receive RS-232 data from a Black Box RS-232 to Ethernet converter. I've followed this example. I've configured ser2net.conf ...
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1answer
651 views

Netgear Prosafe GSM7248 Console problems

Hey all this is my first time dealing with a managed switch and i seem to be having issues with trying to log into the RS232 console on it. First thing i did was reset it back to factory defaults (i ...
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1answer
539 views

How to transfer data between RS-422 and RS-485 ports?

I'm relatively new to behaviors of serial ports such as RS-232, RS-422, and RS-485. I'm wondering how do you initiate data transmission between a system and a device connected to each other by one ...
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1answer
1k views

RS232 serial Y splitter to Raspberry Pi (USB) and thermal printer sometimes blocks flow to printer

We are sniffing data from a restaurant point of sale system (RJ45 to DB9) to its thermal printer by using an RS232 splitter and a Raspberry Pi (DB9 to USB on the Pi). This has worked great 99% of the ...
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1answer
306 views

Setting RS-232 RTS pin

I am experimenting with my PC's RS-232 interface on Win7. I want to toggle the RTS line state with "mode com1: rts=on" command. However monitoring the RTS line with multimeter shows that the state of ...
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581 views

RS232-> convert to usb format and store to jump drive or other usb connected memory

I work with older (pre1997) machine tools. They use a RS232 port to transfer data to and from the machine. I would like to convert these serial signals into a USB format and store them on a jump drive....
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699 views

ATEN USB to Serial driver on Windows 8 - using Linux driver?

I'd like to use an ATEN UC232A USB to serial converter on my computer with Windows 8. I downloaded the appropriate driver which seems to work but after a while produces a blue screen because of the ...
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1answer
1k views

Telnet into a linux machine using an RJ45-RS232 cable

my linux machine doesn't have a RS232 port, only an RJ45. I also have my grandpa's old pentium machine running windows 95 that has an RS232 port. The only means of interfacing these two computers are ...
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2answers
732 views

RS232 Splitter For PC [closed]

I have two XP machines (I know), one is an industrial XP Embedded Beckhoff CX unit, the other is a run of the mill i3 PC. Both have serial ports and both have separate Symbol hand scanners. Does a ...
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1answer
3k views

Why isn't there any terminal program using USB?

I often use HyperTerminal in Windows XP. The problem is that it just supports COM and telnet. I know COM Port is very old-fashioned, but I can't replace it with USB because there is no such program ...