Microscan MS-820 User Manual page 38

User Defined Example
Example: An ACK/NAK protocol can be configured using User Defined. The scan-
ner will transmit data to the host when an ACK is received. If a NAK or
response timeout occurs, the scanner 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,f6>.
Example: To select an unpolled ACK/NAK User Defined protocol with
LRC disabled, send <Kf0><Kf6,,,,,,,^F,^U><Kc0>. ACK and NAK will
be displayed in the menu.Tip: To use User Defined Point-to-Point,
first select Point-to-Point
Example: To select an unpolled ACK/NAK User Defined protocol with
LRC disabled, send <Kf0><Kf6,,,,,,,^F,^U><Kc0>. ACK and NAK will
be displayed in the menu.
Serial Cmd: <Kf6,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.
From Host
Definition: Allows the handshaking protocol to be initiated from the host, if not con-
figured in an unpolled mode. Messages sent to the host will include the
scanner's defined protocol. The status of From Host determines if mes-
sages sent from the host to the scanner must include the defined proto-
col. If From Host is disabled, the defined protocol is not included. If
From Host is enabled, the defined protocol must be included.
Serial Cmd: <Kf 6,RES,address,REQ,EOT,STX,ETX,ACK,NAK,from
Default: Disabled
Options: 0 = Disabled
MS-820 Industrial Bar Code Scanner User's Manual
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Chapter 3 Communications
<Kf 0> and then User Defined <Kf6>.
1 = Enabled
host>
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