Microscan Quadrus EZ, User Manual, Page: 32 / 366

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Quadrus EZ Reader User’s Manual
RS-232/422 Host Port
Host Port Protocol
Point-to-Point (standard)
Point-to-Point with XON/XOFF
Usage:
In general, the point-to-point protocols will work well in most applications.
They require no address and must use RS-232 or RS-422 communications
standards.
Definition:
Protocols define the sequence and format in which information is trans-
ferred between the reader and the host, or in the case of Multidrop,
between readers and a concentrator.
Serial Cmd: < K140,protocol >
Default: Point-to-Point
Options:
0 = Point-to-Point
1 = Point-to-Point with RTS/CTS
2 = Point-to-Point with XON/XOFF
3 = Point-to-Point with RTS/CTS & XON/XOFF
4 = Polling Mode D
6 = User Defined
Usage: Used only with RS-232 or RS-422.
Definition:
Standard Point-to-Point requires no address and sends data to the host
whenever it is available, without a request or handshake from the host.
Serial Cmd: < K140,0 >
Usage:
If an XOFF has been received from the host, data will not be sent to the
host until the host sends an XON. During the XOFF phase, the host is free
to carry on other chores and accept data from other devices.
Used only with RS-232.
Definition:
This option enables the host to send the XON and XOFF command as a
single byte transmission command of start (^Q) or stop (^S).
Serial Cmd: < K140,1 >