ACK/NAK Options

ACK/NAK Options

Definition:

These parameters take effect for ACK/NAK <K140,4> on the main RS-232 or RS-422 ports (not on the Auxiliary Port), and are completely independent of the Polling Mode Options <K148>.

The imager always follows the protocol in both directions (to and from the host). There is no option to disable it from either direction.

Serial Cmd:

<K147,RES,REQ,STX,ETX,ACK,NAK>

RES-NAK Defaults

RES: (Reset)

00 (disabled)

REQ: (Request)

00 (disabled)

STX: (Start of Text)

00 (disabled)

ETX: (End of Text)

00 (disabled)

ACK: (Acknowledge)

06

NAK: (Negative Acknowledge)

15

The following are general outlines of the ACK/NAK protocol. Items that are framed by brackets ( [ ] ) can either be disabled or enabled. LRC does not include STX, but it does include preamble, postamble, and ETX.

Definition:	These parameters take effect for ACK/NAK <K140,4> on the main RS-232 or RS-422 ports (not on the Auxiliary Port), and are completely independent of the Polling Mode Options <K148>. The imager always follows the protocol in both directions (to and from the host). There is no option to disable it from either direction.
Serial Cmd:	<K147,RES,REQ,STX,ETX,ACK,NAK>

RES: (Reset)	00 (disabled)
REQ: (Request)	00 (disabled)
STX: (Start of Text)	00 (disabled)
ETX: (End of Text)	00 (disabled)
ACK: (Acknowledge)	06
NAK: (Negative Acknowledge)	15