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Infinite Peripherals, Inc.
Page 2
www.ipcprint.com
PP-55 Resident Command Set Version 1.01
Communication Modes
1.
Communication ports
There are variants of the printer equipped either with a serial interface or both
serial and USB interface. The USB interface works in a host mode (in future
versions it will be possible to switch between host and slave mode) and it is
intended for a connection between the PDA and the printer. The USB interface
works in a protocol (in future versions it will be possible to choose between
protocol and raw mode) mode while the serial interface can work in both protocol
and raw data mode.
As the serial interface by default is deactivated it is activated by a six-byte
sequence. The following sequence activates the serial interface in raw data
mode:
<16>H <4E>H <AA>H <81>H <BC>H <43>H
The following sequence activates the serial interface in protocol mode:
<16>H <4E>H <AA>H <81>H <BC>H <40>H
The sequence for deactivating the serial interface is:
<16>H <4E>H <AA>H <81>H <BC>H <44>H
Note: In protocol mode this sequence should be sent as a packet. The printer
does not answer to this packet.
These sequences will be interpreted even if they are part of a command or
data sent to the printer.
