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Solve : Printer works through parallel but not serial? |
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Answer» This is my first post. First, I'll explain my exact situation... An easy way is to use a parallel printer switch or another parallel port in the computer this could need another pci card.Here's one: Rosewill 2 port Parallel (SPP/PS2/EPP/ECP) Universal PCI card Model RC-304The OP is using Windows 7, logically he has a modern PC with USB ports. The surprise is the is has a PP port. Those and almost an endangers species. At on time you could have two or three PP on one PC. Noways PP to USB adapters work very well and don not require drivers. The parralel port works...he's asking about the serial port...Quote from: patio on January 30, 2012, 02:07:45 PM The parralel port works...he's asking about the serial port... Geek: Parallel 0 1 0 1 0 1 0 1 Serial 01010101 Quote from: patio on January 30, 2012, 02:07:45 PM The parralel port works...he's asking about the serial port...I am suggesting he forget the serial port. Without a manual for the printer it is waster of time.At least two hours of work unless you have a smart serial adapter. Which costs more that a parallel por to USB adapter. EDIT: Here is a reason to avoid direct serial printers from now on. http://social.technet.microsoft.com/Forums/en-US/winserverTS/thread/ec414ad9-797c-4c35-aef5-cc58348f68f5/ I managed to find a manual online. I matched up the baud rate, parity, stop bits etc. I learned that the printer has a special feature to AUTOMATICALLY select parallel or serial depending on which one gets information first. With that in mind, I've power-cycled and tried again with just the serial cable plugged in and still no response. In the manual, it mentions something about serial cables: Quote To connect the printer to the host’s serial (RS-232C) interface use anFollowed by a chart showing rx---tx, tx---rx, shielding----shielding, etc. Am I correct in assuming I need a specially wired RS-232C?Quote from: JamesS85 on January 30, 2012, 03:25:13 PM rx---tx, tx---rx That sounds like a "null modem" cable. With a null modem connection the transmit and receive lines are crosslinked. This is a very common cable. I had a quick look at the diagrams in the manual (page http://www.studiomsoft.com/html/pdf/meto/mn-4%20Operators.pdf and they seem to correspond with the diagram here http://en.wikipedia.org/wiki/Null_modem Quote from: JamesS85 on January 30, 2012, 03:25:13 PM I managed to find a manual online. I matched up the baud rate, parity, stop bits etc.Yes. Can thou PROVIDE ether a photo of the diagram or a link to the manual. This might be a null modem cable. Which would be rather odd. But serial interface has many variations. images from gstatic.comIf the OP has a parallel port, I've got to think it's an older desktop PC. A MUCH simpler solution would be to add a parallel port card for a second parallel port. Then when you send something to print, you just select LPT1 or LPT2 as the target. Years ago I had two printers and this setup worked well for me. Newegg has several listed in the $10 range. I'm sure other companies have others also.Hi again Win7 has very poor printing speeds on serial why I don't know. The printer may work on the suggested USB to parallel adapter but as the printer seems to have limited support under win7 not really worth the risk. Those adapters need the device to follow the windows rules for printing. As both printers are working on parallel the second card is the safest option and if you don't feel like adding cards to the computer then the switch idea . There is so many of these being removed (switches) places should give them away .Right Salmon Trout. Didn't pointed ignore your post. In some cases the null modem cable does not work as expected. This is because of some vitiation in how the manufacture defined the handshake for the device. The article in the Wikipedia covers this detail. |
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