General Purpose I/O - Microcom 428TM Operator's Manual

Printer Commands
Printer Model
These are examples of how to use the ^D78 and ^D79 commands:
EXAMPLE #1: How to set the printer for a 640 dot, 300 dpi print head:
^A1^D79<CR>
^A640^D78<CR>
EXAMPLE #2: How to set the printer for an 832 dot, 203 dpi print head:
^A0^D79<CR>
^A832^D78<CR>

5.3 General Purpose I/O

When this command is enabled (Switch 6 bit 6; D26 command), the printer provides the
ability to report the current status of 4 additional inputs accessed through the P17 connector
on the PCB, report the status of 4 additional outputs accessed through the P21 connector
on the PCB, to change the status of the outputs, and to configure the inputs to generate
immediate errors.
^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.
5-32
Dots/Inch
224
224
324M
324M
424
424
424M
424M
X28
X28
Table 5-4 Printhead sizes - D78
D79 value
448
203
640
300
640
203
960
300
832
203
1280
300
832
203
1280
300
832
203
1280
300
(Sets 300 dpi)
(Sets 640 dots)
(Sets 203 dpi)
(Sets 832 dots)
428TM Operator's Manual - 880042-0141
Chapter 5