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 transmission to the host computer. The printer has a 128-byte status data buffer. Statuses that exceed the buffer capacity are canceled.
68 USB (Universal Serial Bus) Interface 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) USB bulk IN (TM) 64 bytes 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 Vendor ID Product ID String Descriptor Manufacturer Product Serial number USB vendor-defined class USB printer class 04b8h 04b8h 0202h 0E08h EPSON TM-L500A Character string based on the product serial number