EcLine EC-PM-530D Series, Руководство пользователя, Страница: 61 / 82

EC-PM-530D User's Manual
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(4) Time sequence of Parallel to transmit data (as shown by Figure 5-3):
5.2.3 USB Interface
1. The USB interface is a USB-B type connector (as shown by Figure 5-4):
USB2.0 (Full-Speed) interface connector A and B’s signal wire assignment is shown as the
following table:
2. The connection figure of printer and computer with USB interface (as shown in Figure 5-5).
Contact Number Signal Name Color
1 VBUS Red
2 D- White
3 D+ Green
4 GND Black
BUSY
/ ACK
DAT
/ STR
0.5
μ s
0.5
μ s
0.5
μ s
5
μ s
5
μ s
Figure 5-3 Time sequence of parallel to transmit data
Figure 5-4 USB-B type connector
2 1
3 4
* The “Direction” in the title column means the flow direction of printer signal to the printer.
* The “Return” in the title column means pair-twist return. You must confirm that the
interface cable is a pair-twist shielding line, and every signal line is looped with ground
line and pair-twisted together. Shielding line should be connected with the frame ground
of host computer and printer.
* All the interface state is based on TTL level. The rising and falling time of signal must be
less than 0.2 ms.
* The data transfer must comply with the specification of ACKING or Busy signal. Only
when the level of ACKING or Busy signal is low can data be transferred.