SCANTECH ID (Champtek company) Discovery SG-20 - Manual (Page 81)

Scantech-ID Discovery SG-20 73
Message 5: “Calculate total price”
Message 6: “One moment…”
This message appears on the display when waiting for a response after
sending data to the host system. If required, this message may be turned of.
Message 7: “Discovery Offline”
This message appears on the display when the control commands disables the
Discovery SG-20
Message 8: “Please scan again”
This message appears on the display when the Discovery does not get a
response from the back office after canning a barcode within the time interval
Twait
Message 9: “Please insert card”
Message 10: “Please remove card”
Message 11: “Please remove invalid card”
Display command characters
Introduction
The display of a Discovery can be programmed from the back office system.
Several parameters can be programmed, e.g. message text and cursor position.
Two types of data are available to program the display.
1. The first data type is the printable ASCII data. These characters are directly
printed on the display. These characters stand for the hexadecimal values $20 -
$7F (see the ASCII table in Appendix C).
2. The second data type is the display command data. These characters are
preceded by the <ESC> character ($1B hexadecimal).
The display commands and characters are summarised in the tables on the next
pages.
Display programming examples
The following examples give an impression of the way you can program the
display of the Discovery. The commands described in the table in this section
should be typed as ASCII characters. For instance, the hexadecimal value $1B is
the <ESC>-key on your keyboard. Refer to the ASCII table in Appendix C to make
the conversion from a hexadecimal value to an ASCII value.