Epson TM-T88 Series User Manual

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Appendix
USB (Universal Serial Bus) Interface
Description
• Full-speed transmission at 12 Mbps [bps: bits per second]
• Plug & Play, Hot Insertion & Removable
USB transmission specifications
USB function
USB descriptor
Status transmission from printer with USB interface
In order to avoid lack of status data, it is necessary to periodically retrieve status data at the host PC.
Unlike RS-232, the USB bulk transmission method cannot interrupt data transmission to the host.
The printer has a 128-byte status buffer. Statuses that exceed the buffer capacity are canceled.
Overall specifications
Compliant to USB 2.0 specifications
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
2 mA
USB packet size (full-
speedconnection)
USB bulk OUT (TM)
64 bytes
USB bulk IN (TM)
64 bytes
USB device class
Vendor-defined class
USB vendor-defined class
Vendor ID
04B8h
Product ID
0202h
String Descriptor Manufacturer
EPSON
Product
TM-L90
Serial number
Character string based on the product serial number

Epson TM-T88 Series Specifications

General

Print Method	Thermal line printing
Interfaces	USB, Serial, Ethernet
Auto Cutter	Yes
Paper Width	80 mm / 58 mm (with paper width guide)
Power Supply	Internal (some models may use external)