Set Communication Port Selection Commands; Set Serial Port Source Command (Volatile - ^D109); Contrast Adjustment Commands - Microcom 424 Operator's Manual

Printer Commands
5.2.3

Set Communication Port Selection Commands

The 224 and 424 printers have 3 different serial communication ports on the rear panel:
1) RS-232D
2) USB
3) Ethernet (option)
Only one of the 3 serial ports can be active at any time, but all 3 cables can be connected to
the printer at the same time. In cases where more than 1 cable is connected, the printer
follows specific rules to determine which serial port is the active port when power is applied.
5.2.3.1 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 AutoScan: When the printer powers up, it will scan the USB and RS-232
ports and select the "HOT" port. The USB port will be the HOT port if the USB
cable is connected between the printer and a PC that is powered "ON." The
RS-232 port will be the HOT port 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.
1 Ethernet: This command tells the printer to use the Ethernet port the next
time it powers up.
5.2.3.2

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 AutoScan option is not available with the ^D109 command.
^A ^D Command
X 109 Serial Port Source (volatile)
0 RS-232
1 USB
2 Ethernet
5.2.4

Contrast Adjustment Commands

These commands are used to adjust the darkness of the label print. Print quality will vary
not only with different label stocks, sometimes even in different batches of the same label
stock. It is highly recommended that contrast adjustments be maintained at minimum
settings to achieve desired print quality. Higher contrast settings will reduce the life of the
print head.
5-16
115,200 bits/sec, max.
12Mbits/sec
10Mbits/sec or 100Mbits/sec
224/424 Operator's Manual - 880027-1000
Chapter 5