Microscan Quadrus EZ, User Manual, Page: 34 / 366

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Quadrus EZ Reader User’s Manual
RS-232/422 Host Port
User Defined Example
From Host
Definition:
Example: ACK/NAK protocol can be configured using User Defined. The
reader will transmit data to the host, when an ACK is received, it will carry on
with its business. If a NAK or response timeout occurs, the reader will re-
send the data to the host up to 3 more times before aborting.
Tip: To use User Defined Point-to-Point, first select Point-to-Point
<K140,0> and then User Defined <K140,6> .
Example: To select an unpolled ACK/NAK User Defined protocol with LRC
disabled, send
<K140,0><K140,6,,,,,,,^F,^U><K145,0> . ACK and NAK will
be displayed in the menu.
Serial Cmd: < K140,6 ,RES,address, REQ,EOT,STX,ETX,ACK,NAK ,from host>
Default: No assignment
Options:
Any ASCII character except a null. Control characters can be used to define
RES through NAK in serial commands.
Definition:
This option allows the handshaking protocol to be initiated from the host, if
not configured in an unpolled mode. Messages sent to the host will include
the reader’s defined protocol. The status of From Host determines if mes-
sages sent from the host to the reader must include the defined protocol. If
From Host is disabled, the defined protocol is not included. If From Host is
enabled, the defined protocol must be included.
Serial Cmd: < K140,6 ,RES,address,REQ,EOT,STX,ETX,ACK,NAK, from host >
Default: Disabled
Options: 0 = Disabled 1 = Enabled