Intermec EasyCoder PD41 User Manual page 92

Appendix D — Setup Parameters (IPL)
Protocol
XON/XOFF (default)
In the XON/XOFF protocol, data fl ow control is achieved by
using XON (DC1) and XOFF (DC3) characters. Message blocks
are not required to be bracketed by the Start of Text (STX) and
End of Text (ETX) characters. However, at power up or after a
reset all characters except ENQ or VT will be ignored until an
STX is detected. The message length in this protocol is
unrestricted. That is, the printer processes information as it is
being downloaded and stops when there is no more information.
XON/XOFF protocol conforms to generally accepted industry
standards. No end-of-message response is sent to the host other
than XOFF. An XON will be sent on power up.
Since DC1 and DC3 are used for data fl ow control, the printer
status characters are different than those of the Standard
Protocol. If the host ignores the printer's XOFF, the printer will
resend an XOFF after receiving every 15 characters from the
host.
Condition
Buffer already full
Printhead raised
Ribbon fault
No label stock
Buffer now full
Printhead hot
Label at strip pin
Label skipping
Printing
Intermec Standard Protocol
The Intermec Printer Standard Protocol is a half-duplex
protocol. All data transmissions to the printer consist of status
inquiry (ENQ), status dump (VT), or message blocks. Each
message block starts with the Start of Text (STX) character and
ends with the End of Text (ETX) character. Each message block
must be 255 characters or less, including the STX and ETX
82
Character
GS
US
US
EM
DC4
SI
FS
DC2
DC2
EasyCoder PD41 Printer User's Guide