Epson UB-U09, Руководство разработчика

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Rev. B Function Description 4-1
UB-U09 Developer's Guide
Confidential
Chapter 4
Function Description
The following functions are available when using the serial interface. Each function is described
below.
❏
DTR/DSR control
❏
XON/XOFF control
❏
Printer reset
DTR/DSR Control
The DTR signal indicates the BUSY/READY status of the TM printer; Space status indicates that
the TM printer is READY; and Mark status indicates the printer is BUSY. The handshaking
mode used by the TM printer to determine the conditions under which the printer becomes
BUSY is determined by a DIP switch setting on the printer, as shown below.
The DSR signal indicates whether the host can receive data: the Space status indicates that the
host is ready to receive, and the Mark status indicates that the host is not able to receive.
Table 4-1 TM printer BUSY conditions
Printer DIP Switch Setting Printer BUSY Condition
ON
•
During power on or resetting
•
While self-test is executing
•
When the receive buffer is full
OFF
•
At power on or reset
•
During self-test
•
When the cover is open
•
When feeding paper with the FEED button
•
When the printer has stopped due to being out
of paper
•
When an error has occurred
•
When the receive buffer is full