User-Defined Protocol - Intermec EasyCoder 4420 User Manual

User-Defined Protocol

EasyCoder 4420 and 4440 Bar Code Label Printer User's Manual
When you set the pin to default, it uses flow control if the serial port is set
for XON/XOFF protocol. If you are using Intermec Standard protocol,
the printer uses Ready/Busy.
The 4420 and 4440 printers provide the capability to change protocol
characters. However, you cannot define your own protocol. You can
substitute characters to use as protocol characters, but the rules for the
chosen protocol do not change. The printer does not use any protocol
characters that you replace with the NUL character. One table of protocol
characters exists. You may redefine these characters to create a table that all
of the protocols can use. One possibility for you to redefine protocol
characters may be the replacement of control characters with printable
characters.
Note: Please use caution when replacing control characters with printable
characters. One control character can be replaced with only one printable
character.
The next table lists the protocol characters that you can redefine and the
protocols they affect.
Protocols Affected by Redefining Characters
Character
SELECT IN
POLL IN
RES IN
REQ IN
SOM IN
EOM IN
AFF IN
NEG IN
DLE IN
XON IN
XOFF IN
SELECT OUT
POLL OUT
RES OUT
REQ OUT
SOM OUT
EOM OUT
AFF OUT
NEG OUT
DLE OUT
Appendix C — Communications Reference
STD POL Mode D
X
X
X
X
X X
X X
X
X
X X
X
X
X
X
X
X X
X X
Multi-Drop XON/XOFF
X
X
X
X
X X
X X
X
X
X X
X
X
X
X
X
X
X
X
X
X
X X
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