Printhead Sizes - D78 - Microcom 438 Operator's Manual

Chapter 5
Printer Model
238 Series
238 Series
334M/338M
334M/338M
438T Series
438T Series
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.
This is the command byte configuration:
Command Byte From Host to Printer:
438 Operator's Manual - 880052-0103
Dots/Inch
203
300
203
300
438 203
438 300
203
300
Table 5-2

Printhead sizes - D78

Printer Commands
D79 value
448
672
640
960
832
1280
832
1280
(Sets 300 dpi)
(Sets 640 dots)
(Sets 203 dpi)
(Sets 832 dots)
5-19