16
1.15.2
USB interface
(1)
USB connector
Type
USB upstream port connector (USB type-B connector)
Pin assignments
Pin number
Signal name
1
VBUS
2
D-
3
D+
4
GND
Shell
Shield
(2)
USB communication specifications
(a)
USB functions
Overall specifications:
Complies with USB 2.0
Communication speed:
Full-Speed (12 Mbps)
Communication method:
USB bulk transmission method
Power supply specifications:
USB self power supply function
Current consumed by USB bus:
2 mA (provided entirely from the main unit)
USB packet size
With full-speed connection
USB bulk OUT:
64 bytes
USB bulk IN:
64 bytes
USB device class
USB vendor-defined class and USB printer class
Switching of the class can be set by the software settings on startup.
(For the setting method, see 3.5.2.)
(b)
Receiving the status from the printer
The status of the printer is sent to the host computer via the USB bulk transmission method.
The USB bulk transmission method is a host-controlled transmission method. Unlike RS-232 transmission,
it 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. In
order to avoid lack of status data, it is necessary to periodically retrieve status data at the host computer.
(c)
USB Device Requests of USB printer class
GET PORT STATUS
If this USB device request is requested, the printer returns the following statuses.
Bit
Field
Description
Reserved
Reserved
5
Paper Empty 0: Paper Not Empty
1: Paper Empty
4
Select
1: Select (Fixed)
3
Not Error
0: Error
1: Not Error
2, 1, 0 Reserved
Reserved
2
1
4
3
2
1
4
3
Содержание EU-m30 Series
Страница 1: ...Developer s Guide Includes information on OT BU30 M00139800 EN Rev A ...
Страница 9: ...2 Caution Caution Hot Surface See Appendix B Caution Sharp Edges See Appendix P ...
Страница 51: ...44 4 3 2 Bezel option equipped Units mm Figure 4 3 2 External Dimensions Bezel Option Equipped ...
Страница 52: ...45 4 4 Dimensions for Installing to Customer Device See Appendix M ...
Страница 73: ...66 Y direction Printer support X direction Printer support ...
Страница 75: ...68 Y direction Printer support X direction Printer support ...
Страница 79: ...72 Figure P 3 ...