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USB (Universal Serial Bus) Interface
Outline
•Full-speed transmission at 12 Mbps [bps: bits per second]
•Plug & Play, Hot Insertion & Removal
USB transmission specifications
USB function
Status transmission from printer with USB interface
In order to ensure that there is no lack of status data, it is necessary to periodically retrieve status
data at the host computer.
Unlike RS-232 transmission, status cannot spontaneously interrupt data transmissio
n to the host
computer.
The printer has a 128-byte status data buffer. Statuses that exceed the buffer capacity are
canceled.
Overall specifications USB 2.0
Transmission speed USB Full-Speed (12 Mbps)
Transmission method USB bulk transmission method
Power supply specifications USB self power supply function
Current consumed by USB bus 0 mA
USB packet size (with full-speed connection)
USB bulk OUT (TM) 64 bytes
USB bulk IN (TM) 64 bytes
USB device class Both vendor-defined class and USB printer class are
supported. Switching of the class can be set by DIP
switch on startup.
USB descriptor USB vendor-defined class USB printer class
Vendor ID 04b8h 04b8h
Product ID 0202h 0E08h
String Descriptor Manufacturer
Product
Serial number
EPSON
TM-L500A
Character string based on the product serial number
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