IBM TM7, TI5, TF7, TG5 manual Real-Time Requests, Description

updated March 18, 2002

Real-Time Requests

RS-232 Syntax:

DLE ENQ m or X'1005:n'

where:

mSpecifies the ASCII command character

nSpecifies the hexadecimal command character

m	n	Description
1	31	Release the print buffer for printing. This should be sent
		after an error has occurred and the print buffer is held. If
		an error occurred during the transaction that was being
		held, the printer sends back the line number with the error
		and the error status. The system can then decide to cancel
		or continue printing after the error is corrected. The system
		uses this command to continue printing after the error is
		corrected.
2	32	Cancel print buffer. This clears the print buffer of all data.
		In RS-232 mode, the user must wait for buffer empty
		status (status byte 2, bit 6) before sending any more
		commands.
		Note: A status message is returned immediately after
		execution of this command.
3	33	Undefined.
4	34	EC request - transmit printer status. Sends the printer’s
		status to the system. This command does not go into the
		printer’s data buffer but is processed immediately.
		The printer status is returned in status bytes 1–8. See
		“Status Summary” on page 160 for more information.
		Status byte 5, bit 1, will be set after the EC request has
		been executed.
5-8	35-38	Undefined
@	40	Reset the printer. The printer stops what it is doing and
		goes through its reset routine. The print buffer is canceled
		and all commands erased. All printer settings go back to
		default values.
A	41	Enable unsolicited status.
		Note: A status message is returned immediately after
		execution of this command.
B	42	Disable unsolicited status
C	43	Disable transparent XON/XOFF

Purpose:

To process a command immediately.

Remarks:

Either the Release print buffer or the Cancel print buffer command must be used in these situations:

vWhen recovering from a cash receipt print error

vAfter clearing an unrecoverable home error

156SureMark DBCS User’s Guide