Omron V440-F, User Manual

Page: 263 / 500

Appendices
D-14 V440-F C-Mount Code Reader User Manual
D-7 Polling Mode Options
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
).
Serial Cmd:
<
K148, RES,REQ,STX,ETX,ACK,NAK
>
D-7-1 RES-NAK Defaults
RES: (Reset)
04
REQ: (Request)
05
STX: (Start of Text)
02
ETX: (End of Text)
03
ACK: (Acknowledge)
06
NAK: (Negative Acknowledge)
15