
Auto Focus Multi Code Reader V430-series User’s Manual (Z392)
3-7
Communications
Polling Mode Options
RES-NAK Defaults
Note:
See
Polling Mode Data Flow Examples
for sample
Polling Mode
communication
scenarios.
Definition:
These parameters only take effect for
Polling Mode
<K140,5>
on the main
RS-232 port and are completely independent of the
ACK/NAK Options
<K147>
.
The values of protocol characters can be changed, but the protocol events
cannot be disabled. The polling mode address is configured in the
<K140>
command (see
Poll Address
).
If RS-232 is enabled,
<K102,0>
,
Polling Mode
will operate as a
Point-to-
Point
polling protocol. This is because the RS-232 transmitter is always left
on when enabled.
Serial Cmd:
<
K148,
RES,REQ,STX,ETX,ACK,NAK
>
RES: (Reset)
04
REQ: (Request)
05
STX: (Start of Text)
02
ETX: (End of Text)
03
ACK: (Acknowledge)
06
NAK: (Negative Acknowledge)
15
Summary of Contents for V430-F-series
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