Microcom 324M, Руководство оператора

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Chapter 5 Printer Commands
324M/424M Operator’s Manual - 880026-0144 5-23
^A ^D Command
XX 110 General Purpose Status Byte
The printer has a special mode of communication for General Purpose control
environments. Communication is over the Ethernet port and uses the
following protocol.
The host sends a command byte to the Ethernet port every few milliseconds.
The printer’s Ethernet interface will pass the command byte on to the printer
only when there is a change, i.e., when there is a new command.
The printer sends a byte of status data to its Ethernet interface using the same
data format, and will only send the data when there is a change in status. The
printer’s Ethernet interface will send the printer status byte to the HOST every
few milliseconds.
This is the command byte configuration:
Command Byte From Host to Printer:
Bit # Function when = “1” Function when = “0”
0 PRINT DON’T PRINT
1 PRINT TEST PATTERN DON’T PRINT TEST PATTERN
2 RESET DON’T RESET
3 not used
4 not used
5 not used
6 not used
7 not used
The HOST only sends the command byte to the printer. The printer’s Ethernet
interface receives this command byte from the HOST and tests it to see if it is
different from the previous command byte. If there is a change, then the
command byte is put into the “xx” of a ^Axx^D110 command and sent to the
printer. Valid values for “xx” are determined from the “Host to Printer” table
above.
The printer sends a status byte to the host every few milliseconds thru its
Ethernet interface. This status byte is sent whether there is a change of status
or not.
Status Byte From Printer to Host:
Bit # Function when = “1” Function when = “0”
0 (LSB) IN RESET or PRINTING NOT BUSY
1 ERROR NO ERROR
2 DOWNLOADING A FORMAT FINISHED DOWNLOAD
3 FORMAT LOADED NO FORMAT LOADED
4 not used
5 not used
6 not used
7 (MSB) not used