Unisys EFP9800 manual Real Time Request to Printer

EFP9800 ESC/POS Commands

n = 6: Validation Paper Status
		Validation Paper Status
Bit	Validation Paper Function	0	1
0	Not Used	Always 0
1	Not Used		Always 1
2	Validation Paper Selection	Selected	Not Selected
3	Validation Insertion Waiting	Not Waiting	Waiting
4	Not Used		Always 1
5	Validation Sensor	Validation Present	Validation Not Present
6	Slip/Validation Sensor	Validation Present	Validation Not Present
7	Not Used	Always 0

Note: For Bit 2, there is a lag between receipt of the Select Print Paper(s) (1B 63 30) and bits 5 and 6 (transmit the current state of the slip/validation sensor).

Real Time Request to Printer

Responds to a request from the host computer. The request is specified by the value of n. (See table below.) The printer performs the command upon receipt. The command is ignored if n is out of the specified range.

Hexadecimal	Decimal	ASCII	Value of n
10 05 n	16 5 n	DLE ENQ n	1	= Recover and restart printing at line
				where error occurred.
			2	= Recover and clear buffers.
			3	= Cancel slip waiting.

The printer performs this command even when it is offline, in an error state, or the receive buffer is full.

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