Microcom 334M, Operator'S Manual

Page: 102 / 237

Chapter 5 Printer Commands
334M Operator’s Manual - 880060-0110 5-20
Printer Model Dots/Inch
D79 value
238 Series 203
448
238 Series 300
672
334M/338M 203
640
334M/338M 300
960
438 203
832
438 300
1280
438T Series 203
832
438T Series 300
1280
Table 5-2 Printhead sizes - D78
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> (Sets 300 dpi)
^A640^D78<CR> (Sets 640 dots)
EXAMPLE #2: How to set the printer for an 832 dot, 203 dpi print head:
^A0^D79<CR> (Sets 203 dpi)
^A832^D78<CR> (Sets 832 dots)
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: