Communication

7193 Owner’s Guide

Parallel Interface

Parallel Protocol

The 7193 uses a standard PC-compatible parallel interface. The following illustration shows the timing diagram for the interface protocol.

1.ACK/ will not go high until STROBE/ goes high.

2.When the printer is not ready to receive more data, ACK/ will be sent, but BUSY will remain high.

3.When the power is turned on or the printer is reset, an ACK/ will be sent during initialization.

4.Typical time from STROBE/ to ACK/ is approximately 44 µ seconds.

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May 1996

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M-S Cash Drawer 7193 manual Parallel Interface, Parallel Protocol