Set Serial Port Source Command (Volatile - ^D109); Print Head Size Commands - Microcom 424M Operator's Manual

Chapter 5
5.2.2.2 Set Serial Port Source Command (Non-volatile- ^D108)
This command sets which serial port will be used the next time the printer is turned ON. The
224/424 printer has three serial data ports on the rear panel: RS-232, USB, or Ethernet.
Only 1 port can be active at any given time. The D108 command sets how the printer
selects the active serial port the next time the printer is powered ON. Settings made with
D108 are saved in the printer's system parameters and are used to select the serial port on
power-up.
^A ^D Command
X 108 Serial Port Source (Non-volatile)
0 AutoSelect: When the printer powers up, it scans the USB and RS-232 ports
and selects the "Active" port. The USB port will be selected if the USB cable is
connected between the printer and a PC that is powered "ON." The RS-232
port will be selected if the USB cable is not plugged in and a character comes
in on the RS-232 port. The printer will continue to scan both ports until one or
the other condition is satisfied.
3 RS232: When the active port is set to a 3, the printer will ignore other ports
being plugged into the machine and will only be active on the RS232 port.
4 USB: When the active port is set to a 4, the printer will ignore other ports
being plugged into the machine and will only be active on the USB port.
5.2.2.3

Set Serial Port Source Command (Volatile - ^D109)

This command is similar to the ^D108 command, except the ^D109 command immediately
switches between the 3 serial ports without the need to cycle power. Settings made with
^D109 command are NOT saved on power-down. The printer returns to the original port
setting on the next power-ON.
Note: The Auto Select option is not available with the ^D109 command.
^A ^D Command
X 109 Serial Port Source (volatile)
0 RS-232
1 USB
2 Ethernet
5.2.3

Print Head Size Commands

The different printer models may be configured with a variety of different print head sizes
and densities. The ^D78 and ^D79 commands (non-volatile) allow the printer to be setup
through software to configure the different print head sizes and densities. Power cycle or
^D32 is required before command settings take affect.
Note: When using these commands, the ^D79 command MUST be sent prior to the ^D78
^A ^D COMMAND
X 79 Set print head dots/inch (dpi). This command sets the dot density of the
print head.
324M/424M Operator's Manual - 880026-0144
Printer Commands
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