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Epic 880TM Specifications and Requirements
USB Interface
The USB interface supports USB Version 2.0 High speed or full speed. The standard USB interface is implemented through a standard Series “B” receptacle as defined in the USB Specification. The printer is
The Standard USB Type B connector has the following pin functions:
Pin Signal
1 Vbus (+5 V dc1) (This is used to select between Interfaces) 2 Minus data
3 Plus data
4 Ground
Note: The standard USB interface does not have enough power to run the printer. It is not possible to power the printer with the USB cable alone.
USB Configuration
To allow the application to use a virtual serial port or a USB printer port to interact with the printer, the EPIC 880TM supports both ports, and can be configured to support a Virtual COM port or a USB Printer device. The USB section of the configuration allows USB Mode, USB Enumeration, and whether the printer will perform a normal Windows plug and play operation to be configured. The default is printer port, use description, with Windows PnP on.
You should configure these options based on how you want the printer to perform in your system. Typically only the Virtual COM or USB printer driver is required: to load the Transact Virtual COM port driver, disable the USB printer port. Typically you can use the description as the enumeration ID, representing how the printer is uniquely identified to the host. If you select a description, all Epic 880’s will be the same, and you can interchange printers without affecting the port location, subject to the limitation that no more than one Epic 880 can be connected to the same host. If that is a requirement, select ID by serial number or allow the ID number to be assigned by windows based on the connection.
You can also disable the Windows PnP sequence. This will prevent the Windows system from receiving the printer driver selection sequence. This will allow you to manually assign a driver to the USB printer connection and not have Windows keep asking for a printer driver.
The adapter will support a high speed USB interface if the host also supports high speed. If the host does not support high speed the printer will revert to full speed. It is possible to disable high speed operation by setting a configuration option. The printer does not support the USB low speed protocol.
1The Vbus signal is used to disable the serial port. If the USB is connected the RS232 serial port is not active.
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