User guide

Status and Error Reporting for the LA310 MultiPrinter
11.3 Device Status Report (DSR)
Note
When the ‘‘Input Buffer’’ feature is set to 32K, no fonts can be
downloaded into the LA310 MultiPrinter and the DECDLD sequence is
ignored.
11.3.3 Alternate Protocol Error
This error occurs when an alternate protocol that is not available in the printer
(built-in or in a cartridge) is selected with the Select Other Coding System
(SOCS) command.
11.3.4 Initialization Messages
If the serial port becomes active when the automatic port selection is enabled,
and this feature is enabled with the INIT. REPORT feature in the DEC PPL2
sub-menu, an unsolicited extended Device Status Report (DSR) is issued
reflecting the state of the printer when the LA310 MultiPrinter completes a
power-on.
The parameter value of the initial brief report indicates ‘‘Device Ready’’ (Ps=0)
or ‘‘Device Not Ready’’ (Ps=3), as appropriate.
The first parameter value of the extended report uses the ‘‘First report since
initialization’’ value from Table 11–4. If any additional error conditions are
present, the parameter values for these errors are also reported.
Table 11–5 shows the possible initialization messages.
Table 11–5 Initialization Messages
Extended Report Meaning
ESC [ 0 n ESC [ ? 5 7 ; 2 0 n Printer ready to print; just switched on
ESC [ 3 n ESC [ ? 5 7 ; 2 6 n Printer just switched on; cover open
ESC [ 3 n ESC [ ? 5 7 ; 2 7 n Printer just switched on; paper out
If an error condition other than paper out exists when the printer is powered
up (hardware failure, carriage error), the initialization message is not sent
until the error condition is cleared.
The extended report is sent after the initial XON character is sent, following a
power-up. It is provided for applications or symbionts that need to know if the
device has been powered on recently and may be reset to an unknown state.
Status and Error Reporting for the LA310 MultiPrinter 11–5