HP 2100 Service Manual - Page 86

Printer Job Language (PJL) Overview Printer Job Language (PJL) is an integral part of the configuration, in addition to the standard Printer Command Language (PCL). PJL allows the printer to perform functions such as: • Two-way communication with the host computer through an IEEE1284 B interface connection. The printer can tell the host such things as the control panel settings and allow the control panel settings to be set from the host. • Dynamic I/O switching allows the printer to be configured with a host on each I/O. The printer can receive data from more than one I/O simultaneously until the buffer is full. This can occur even when the printer is offline. • Context-sensitive switching allows the printer to automatically recognize the personalities (PostScript or PCL) of each host and configure itself to serve that personality. • Isolating print environment settings from one print job to the next. For example, if a print job is sent to the printer in landscape mode, subsequent print jobs only print in landscape if they are formatted for landscape printing. For more information, see the Software Technical Reference Documentation (Part Number 5021-0377). The complete PJL Status Code listing is contained in the appendix of the Printer Job Language Technical Reference. Also see HP's web site at www.hp.com. 76 5 Functional Overview C4170-90959