Ithaca ITHERM 280, Programmer'S Manual

Page: 301 / 318

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Description Inquiry (ENQ) commands are accepted and answered in remote power
down mode. The printer reactivates if the button is pressed or a power
up command is received.
Note: If power is lost after the power down command is issued, the printer
remembers it is in power down mode but does not reactivate the
communications link. The button must be pushed to return the printer to
full operation.
Note: This command is not available in STAR mode.
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It is possible to generate a software printer reset in serial mode. The [ENQ] <10>
command requests that the printer reset. (This is not a hardware reset). The reset
completely initializes the hardware and software, but the printer does not recover from a
loss of software control.
Note: If the printer mode was changed by the [ESC] y <2> or <3>
command, a soft reset will not return to the power on default.
The command flow is as follows:
•
The [ENQ] <10> is acknowledged. During cleanup and initialization, the printer is
placed off-line. Before the printer initializes, it tries to clean up its input buffer
and other internal processes.
•
The printer’s software is reinitialized.
•
The power-cycled flag is set.
•
The print head is homed and re-calibrated.
•
The printer goes back on-line.
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In parallel mode, driving the INIT signal on the parallel port for 100 milliseconds
generates a software reset. It takes about two seconds for the printer to recover from a
reset. The [ENQ] <10> command has the same effect, but it is not acknowledged.