Datamax 7A300007 Rev. 2 manual Black Mark Sensing Control Commands, Esc C, Esc Q R Cr

Cancel Magnetic Card Data Read Command ESC C

This command cancels the MCR read process. The printer returns to online operation mode.

Escape Sequence:	ESC	C
Hexadecimal:	1B	43
Decimal:	27	67

Note that after executing this command the printer will send the message “, 09, Cancel Request” to the host.

Black Mark Sensing Control Commands

Set Paper-Out Sensitivity ESC Q Q n CR

This command sets the paper-out sensor sensitivity level. 0 ≤ n ≤ 255.

This command sets the number of 0.125mm dot rows that the printer can advance paper before the sensor detects an out of paper error. The length of the paper sensitivity must be larger than the length of the black mark on the media to avoid paper out error.

The value selected for the sensitivity is dependent upon the height of the pre-printed black mark located on the label or form stock. The default power-on value n is 255 (0xFF).

Example: The following escape sequence sets the paper sensitivity to 6.25mm (50*0.125)

Escape Sequence:	ESC	Q	Q	50
Hexadecimal:	1B	51	51	32
Decimal:	27	81	81	50
Enable Black Mark Reporting				ESC Q R CR

This command enables the printer to send reporting messages to the host. Refer to “Black Mark Found” and “Black Mark not found” commands for details of the messages that are activated.

Escape Sequence:	ESC	Q	R	CR
Hexadecimal:	1B	51	52	0D
Decimal:	27	81	82	13
Disable Black Mark Reporting				ESC Q r CR

Prevents the printer from sending report messages to the host. Refer to “Black Mark Found” and “Black Mark not found” commands for details of the messages that are deactivated

Escape Sequence:	ESC	Q	r	CR
Hexadecimal:	1B	51	72	0D
Decimal:	27	81	114	13

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