Click to expand.Unless you can be more specific then I'm afraid you're on your own. There is no single standard for RS232 on RJ45. There is a recognised standard in the form of TIA-561, and a (much more prelvalent) de facto standard in the form of Yost, but still many manufacturers do their own thing entirely.
If you can point us to a wiring standard for the terminal (or quote the make and model - we could possibly find out from that) then determining cable wiring is relatively straightforward. If not it would be nothing more than a wild stab in the dark.
Click to expand.Good morning, Firstly, I appreciate the help from all of you. The Printer is a Epson TM-T20. At has a serial interface with a DB9F connector. In the past, I used Epson TMU 220 with a serial interface and with a DB25M connector. The pin out for this cable: ECR Printer RJ 45 DB25M DSD 1 0-1 chGND DSR 2 2 DXD TXD 3 3RXD RXD 4 4RTS RTS 5 5CTS CTS 6 6DSR The pin out is: RJ 45 DBM 3 to 3 4 to 2 6 to 20 7 to 7 8 to 6 I am displaying this example just in the hope this would assist to overcome this problem. Thnks and regards.
Good morning, Firstly, I appreciate the help from all of you. The Printer is a Epson TM-T20. At has a serial interface with a DB9F connector. In the past, I used Epson TMU 220 with a serial interface and with a DB25M connector.
The pin out for this cable: ECR Printer RJ 45 DB25M DSD 1 0-1 chGND DSR 2 2 DXD TXD 3 3RXD RXD 4 4RTS RTS 5 5CTS CTS 6 6DSR The pin out is: RJ 45 DBM 3 to 3 4 to 2 6 to 20 7 to 7 8 to 6 I am displaying this example just in the hope this would assist to overcome this problem. Thnks and regards. Click to expand.It would really have been helpful if you had posted the complete pin-out for the RJ45. I also assume there's a typo in there: RJ45 pin 1 should be DCD (there is no DSD).
As I suggested may be the case, this follows no standard whatsoever. From this partial pin out and the details of the cable I infer the following, but double check it to make sure: Pin 1 DCD 2 DSR 3 TxD 4 RxD 5 RTS 6 CTS 7 GND 8 DTR From this I get the following wiring: EPOS (RJ45) Printer (9 pin DCE) 1 1.
2 6 3 3 4 2 5 7. 6 8. 7 5 8 4 Lines marked with an asterisk are ones not present in your existing cable, which links ground, TxD & RxD, DSR & DTR only. With a different printer it is possible the handshaking requirements are different, so I would connect them up even if I didn't think they were needed.
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That would suggest DCE wiring. It would really have been helpful if you had posted the complete pin-out for the RJ45. I also assume there's a typo in there: RJ45 pin 1 should be DCD (there is no DSD). As I suggested may be the case, this follows no standard whatsoever.
From this partial pin out and the details of the cable I infer the following, but double check it to make sure: Pin 1 DCD 2 DSR 3 TxD 4 RxD 5 RTS 6 CTS 7 GND 8 DTR From this I get the following wiring: EPOS (RJ45) Printer (9 pin DCE) 1 1. 2 6 3 3 4 2 5 7. 6 8. 7 5 8 4 Lines marked with an asterisk are ones not present in your existing cable, which links ground, TxD & RxD, DSR & DTR only. With a different printer it is possible the handshaking requirements are different, so I would connect them up even if I didn't think they were needed.
RS232 Control Codes Epson offers comprehensive projector control via RS232. This section covers RS232 control connectivity and Epson projector command codes. Also included is a TIPS section to highlight some techniques that are required to program Epson projectors. The Epson PowerLite 85 projector uses an ASCII based version for Epson Standard Codes. These can be controlled via RS232, USB or Ethernet control. It is referred to as ESC/VP21 and the list of codes are contained here.
Db9 To Rj45 Serial Cable
Llama gun serial numbers. Current revision is Rev P and was issued on January 28 of 2011 of the ESC/VP21 Command Users Guide for Business Projectors. A complete compatibility of models and codes is also provided for your convenience.
2: Important Note: To ensure proper programming, refer to programming wait times on page 6 of the PDF of ESC/VP21 Codes manual Rev P. Failure to insert proper wait times may compromise projector responsiveness. 3: 'Communication On' setting in the projector menu may have to be enabled for some communication. Refer to ESC/VP21 manual.
ESC/VP21 Codes (ASCII Based) Size Format 626KB.
Example cables for connection from a PC to various Lantronix products with DB connectors are provided near the end of this FAQ Background: When RS232 was developed the idea was that there would be 2 kinds of devices, DTE (Data Terminal Equipment) and DCE (Data Communications Equipment). Everything would use DB25 connectors and everyone would always connect a DTE to a DCE using a straight-through cable and everything would be easy. However, as time went by folks wanted to connect two DTEs (or two DCEs) to each other, and connectors started being used, so alternative cable wirings were required. There are no hard and fast rules but in general a DTE will have a male DB25 or possibly a male DB9 connector and a DCE will have a female DB25 or DB9.
Other connectors may be used but these are the most common. A typical DTE is a serial port on a terminal, a Com port on a PC or the serial port on an EDS2100. A typical DCE is the serial port on a modem or on a UDS-10, UDS100 or UDS1100. If you're connecting a DB25M DTE to a DB25F DCE you can use a straight-through cable, i.e. Pin 1 wired to pin 1, pin 2 wired to pin 2, etc. Because of this DTE connectors are labeled according to the signal on the pin, DCEs are labeled according to the signal that should be coming from the DTE.
In other words a DCE and DTE are labeled identically even though the direction of their signals are opposite. The most common DB25 pinout is: 1 Protective ground 2 Transmitted data (Out) (TD or TXD) 3 Received data (In) (RD or RXD) 4 Request to send (Out) (RTS) 5 Clear to send (In) (CTS) 6 Data set ready (In) (DSR) 7 Signal ground (SG) 8 Carrier detect (In) (CD or DCD) 20 Data terminal ready (Out) (DTR) Originally all 25 pins of a DB25 were used but today the above pins are usually the only ones used. The most common pinout for DB9 serial connectors is: 1 Carrier detect (In) (CD or DCD) 2 Received data (In) (RD or RXD) 3 Transmitted data (Out) (TD or TXD) 4 Data terminal ready (Out) (DTR) 5 Signal ground (SG) 6 Data set ready (In) (DSR) 7 Request to send (Out) (RTS) 8 Clear to send (In) (CTS) 'Straight-through' cable So a cable for a connection from a DB25 DTE to a DB25 DCE is wired: DTE DCE DB25M DB25F DB25M DB25F TXD 2-2 TXD RXD 3-4 RTS CTS 5-20 DTR To connect a DB9M DTE (e.g. The Com Port on a PC) to a DB25F DCE (e.g.
Serial Cable Pinout Db9
How to Connect an Epson Serial POS Printer Beagle Hardware How to connect an Epson Serial POS Printer A serial connection is probably the most common way to connect an Epson printer to the computer. A serial connection involves a pair of wires (transmit and receiver) along with the status and handshaking wires. The data cable connects the serial port on the computer to the serial adapter card on the printer. If installing a Serial Buffer II,. Required Components.
Epson POS Printer with Connect-It serial adapter (UB-S01 or equivalent). Windows computer with serial port Epson Printers Covered. and Setting the Connect-It Serial Adapter Install the Connect-It serial adapter into the Epson TM series printer The adapter can replace the existing adapter and is held in place by 2 screws. The most common problem we've had with serial adapters and printers isn't the printer at all - it's the cable! There's a wide variety of connection schemes used to connect a serial printer. The most common is the null modem type connection where the transmit and received lines are crossed.
Epson also recommends crossing the DTR with the DSR and the CTS with the RTS lines. Very often the serial printer is attached using an internally wired adapter which converts the DB-25 connector to a phone type (RJ-11) connector. The connections can be wired inside the housing for custom wiring options. Note: The DB-25 cable connector on the printer is a serial connection while the serial interface connection on the back of most computers is not a DB-25 connector but a DB-9 male. The DB-25 connectors commonly found on the back of computers is the parallel interface.
This is confusing, but it's the way it is. D-Sub 25 (TM) D-Sub 9(PC) 2 TxD connected to 2 RxD 3 RxD connected to 3 TxD 20 DTR connected to 6 DSR 20 DTR connected to 8 CTS 6 DSR connected to 4 DTR 7 GD connected to 5 GD Tip: If unsure on which cable to use, first try a standard Null Modem cable.
Getting Initial Printer and Connect-it Adapter Settings - the Print the initial settings of the serial adapter by running the self test. Run the printer self test by holding down the feed button while turning on the printer. The printer will print a list of initial settings including baud rate, data bits, parity, stop bit, flow control (handshaking). These values will be needed when configuring the serial port in Windows.
Configuring the Computer Check the POS application to determine what the port settings should be on the computer. The POS application and the printer must have the same baud rate, data bits, parity, stop bit for the printer to print legibly. Also the handshaking must be set the same for the printer to print at all.
You can change the interface settings of the printer using the on the underside of the printer. See the for the model of printer you are using for specific switch settings. Verify the port you are using by checking the port in the Device Manager under the System applet in the Windows Control Panel.
To obtain the latest Device Drivers from Epson:. Download and Install Epson’s drivers available from. Click on TECHNICAL RESOURCES.
Select the printer model under the menu. Click the download drivers on the printer page. Configuring the Printer in Windows First off, it should be said that the serial printer is not Windows plug and play compliant. You need to make a few changes in the printer settings in Windows to get it to work with the serial adapter. Specifically you need to configure the serial port you are using to connect with the printer.
Installing the Epson in Windows Unpacking the Drivers After downloading the driver installer from Epson, the drivers need to be unpacked before the installer can run. Starting the Installation The installer walks you through selecting the model and interface you are installing drivers for in Windows. Add the Serial Printer Press the 'Add' button to add the new printer to Windows. Selecting the Printer and the Printer Port Choose the Epson model of the printer installed from the pull-down menu and choose the type of interface in use (Serial) for the port type. Setting the Port Settings for the printer Insert the baud, bits, flow control and parity settings from the printer obtained in the, above.
Also select the number of the COM port on the computer connected to the printer. Installing the Driver Files The installer will summarize the drivers selected. You can back up and change the driver here, if necessary. Completing the Driver Installation The drivers will now be installed with the model and port selected. This completes the installation of the Epson printer drivers. Open the printer in the Windows Printer Folder. Select the Ports Tab.
Turn off bidirectional support, if experiencing problems printing. You can try selecting the serial port in use (COM4 in the above example). Press the 'Configure Port' button to open the properties screen.
Enter the same settings as were printed out in the adapter self-test. We recommend that you run off the 'bidirectional printing' option on the Ports screen. Installing the Printer Driver in Windows After installing the drivers, the printer should be visible in the printers folder of the Windows Control Panel. You should now be ready to test the printer by printing some text or by pressing the 'Print Test Page' button in the General Tab of the printer properties. If the printer fails to print the test page then check:.
Power cable is installed and the printer is turned on. Data cable is installed on the printer and the computer. Port settings are set the same on the printer (from the ) and in Windows. The COM port selected in Windows is correct. The data cable has the right configuration for the printer and computer in use.
Using the wrong data cable is the most common problem with new installations. The printer will fail to print unless the cable is compatible.
Utilities to Run on the Computer You can verify connectivity by running the Epson Flash utility. Epson Flash Utility The Epson Flash Utility is normally installed along with the Epson printer drives.
It is used to upload bitmaps to Epson printers, but has a simple communication test which can check for basic connectivity between the computer and the printer. Pressing the 'Comm. Test' button on the Setup tab of the utility will give a go/no-go indication of basic connectivity. Running the TMNet configuration utility on the Computer The TMNet network utility is not compatible with the serial interface. Connectivity Problems, never printed. The data cable is incorrect. Typically serial printers need to use a.
This cable is not straight through - it crosses transmit and receive lines. The has not been installed for the serial adapter and printer in use. Buku persamaan ic dan transistor switching. Check the serial printer cable is plugged into a serial (COM) port on the computer side.
On the computer side this is typically a. The printer or the interface card is defective. Confirm printer operation. Confirm interface card by swapping with another interface card or printer. Prints Garbage. You didn't copy the DIP switch serial settings from the old printer to the new printer.
Serial Cable
The interface settings are not the same on both the printer and computer. Run the to show the current settings on the printer. Check the computer side to see that settings are the same. Settings can be changed on the printer using the. The printer selected in the software is not correct or the software doesn't support the printer in use. No longer prints.
The TM printer is turned off. Turn on the TM printer. Confirm the connection of the power supply unit or the voltage of the commercial power. The TM printer is offline. Turn the TM printer online. The ERROR LED of the TM printer is on or flashing.
Remove the error cause. The printing port of the driver on the computer side is not specified correctly. Confirm the driver setting on the computer side.
The printer is not online in Windows. Check the status of the printer in the Windows Control Panel, the printer should show status as ready. Tip: try stopping and restarting the Print Spooler from the Services applet of the Control Panel. Printing is slow.
There are problems with the computer. Printing speed may go down due to problems with the network system or applications. Run the printer self test to confirm the printer is capable of printing at its normal speed. More Information Need more help on how to setup your Epson printer? Try our E-Mail: Copyright© 2016 Beagle Hardware.
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Toward the end, there’s a diagram of the pinouts for the cable. It’s a null modem cable without flow control. It uses 3 wires – GND, TxD, RxD. Instead of using a traditional serial cable – aka, a “null modem cable”, we use these adapters. They come in both DB9 to RJ11 and DB9 to RJ45 forms. I got the latter, but either one works.
Here’s what they look like: (pics from ) They appear to have putty colored ones. I got some cool looking black ones from Fry’s, but now regret it – you can’t write in black Sharpie on black plastic:(. You construct them by pushing the gold “holes” into the holes, which are numbered 1 to 9. In between these, you use phone cord, or in my case, some Cat-3 and RJ11 modular plugs. It’s easiest to use the plugs with only enough room for 4 wires, as that’s all you need. The reason for using a rolled cable or phone cord is that it’s totally standard.
If the equipment needs to be rearranged, and the cable is lost, it’s likely someone will recall that it looked like phone cord, and use phone cords to re-establish the connection. The phone cord will work. What I did was clip the white wires, leaving the colored ones. On one end, they’re arranged in order, and at the other end, in reverse order. The actual order doesn’t matter, but you can use Green-Blue-Orange-Brown (which recalls the EIA standard), and Brown-Orange-Blue-Green at the other end.
The RJ45 version should conform to this, as the RJ11 plug will also work with telephone cords that have four conductors. The RJ11 to DB9 is: 1 – NC 2 – RD 3 – GND 4 – GND 5 – TD 6 – NC I don’t have the colors for the wires coming from the RJ11, unfortunately. RJ45 just adds one conductor on each side, so the numbers should be: 1 – NC 2 – NC 3 – RD 4 – GND 5 – GND 6 – TD 7 – NC 8 – NC And on the DB9 side, using the standard colors: 1 – Blue 2 – Orange 3 – Black – 2 4 – Red – 5 5 – Green – 5 6 – Yellow – 3 7 – Brown 8 – White Both red and green wires need to be grounded to pin 5. If you don’t, you won’t get a signal in both directions. But you can’t put two pins into one hole. That’s a problem, and the solution is to solder the green wire onto the red one. Cut the green wire just below the “hole” – the gold thing that gets shoved into the hole.
Strip around 1/16th of an inch of insulation with your thumbnail. Take a toothpick and use it to put a tiny dab of flux on the wires, and then a tiny dab onto the red wire’s “hole” just north of where it gets crimped. This flux matters a LOT, and this won’t work without it. (If you don’t use flux, get some. It’s worth it.) Heat up your iron – a 15 watt one is fine.
Melt a tiny bit of solder on the tip, and then tin the stripped wire. The insulation will melt back a bit. Now, put some solder onto the red wire’s connector, right on the flux. Pull it away once it’s flowed. Now, using small pliers, hold the tinned wire and the tinned connector together, and heat them with the iron so they stick together. The trick is to solder them tight without leaving a big blob of solder. If you have a tiny peak of solder, that’s OK.
You can push that down with the pliers. Now, push this red wire into the hole for pin 5. You might need to push a bit with the pliers.
Once it’s done, I like to clip the unconnected wires, so it’s a neat install. Other folks just push them inside the shell. You can close up the shell by twisting the DB9 a couple times so the wires tend to coil up into the shell. If you put the “hole” into the wrong position, you can push it out with a paper clip.
You take a small paper clip and straighten out the end. Put the wire into the hole (as if it’s a male pin), and then, using pliers, hold the wire tight, and push the DB9 firmly toward the wire.
Don’t jam it – just hold the DB9 tight, and push, firmly. You’ll feel a “click” as the connector is released.
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