Re: usbserial/printer

[Stan Hoeppner <stan@hardwarefreak.com>]

Leonardo Ruoso put forth on 4/18/2011 8:34 PM:
> I have a computer without the old rs232, it's like a netbook, but it's
> running lenny. I need to plug a termal serial printer to it. usb to serial
> adapter (prolific chip) should be okay, but didn't work. When back at home,
> just plugged the printer to the serial and it worked. Plugged through
> usbserial adapter and nothing happened again. Does anyone have any idea?
> 
> dmesg output when disconnecting and connecting back the usb2serial cable
> [ 1689.296172] usb 2-2: USB disconnect, address 2
> [ 1689.296404] pl2303 ttyUSB0: pl2303 converter now disconnected from
> ttyUSB0
> [ 1689.296423] pl2303 2-2:1.0: device disconnected
> [ 1693.224040] usb 2-2: new full speed USB device using uhci_hcd and address
> 3
> [ 1693.387033] usb 2-2: New USB device found, idVendor=067b, idProduct=2303
> [ 1693.387039] usb 2-2: New USB device strings: Mfr=1, Product=2,
> SerialNumber=0
> [ 1693.387044] usb 2-2: Product: USB 2.0 To COM Device
> [ 1693.387048] usb 2-2: Manufacturer: Prolific Technology Inc.
> [ 1693.390133] pl2303 2-2:1.0: pl2303 converter detected
> [ 1693.402159] usb 2-2: pl2303 converter now attached to ttyUSB0
> 
> PS: The printer is a thermal serial diebold/mecaf.

What serial parameters did you program into the Prolific converter's
serial port?  Do they match what is expected at the printer?

Have you confirmed the serial cable works properly?

Have you confirmed the Prolific converter itself is working properly and
not defective?

-- 
Stan