Lexmark Monochrome Laser Complete Printer Reference (1.7 MB) - Page 182
Parallel communications, Connectivity and network management
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The following diagram illustrates how internal and external print servers relate to a network, client workstations, and the printer: Network Internal print server External print server If the Optra W810 (or any other Lexmark printer that supports NPAP bidirectional protocol) is connected to a parallel port of a MarkNet print server, the printer is supported by MarkVision. Parallel communications The standard parallel port on the printer uses a standard 36-pin Centronics interface. In addition to unidirectional communication, it also supports the Nibble, Byte, and Enhanced Capability Port (ECP) modes of the IEEE 1284 specification for bidirectional communications on a parallel port. An optional high-speed parallel 1284-C adapter is also available to provide an additional 1284-C parallel port. The Optra W810 supports three modes of parallel communication: unidirectional communication, reverse channel mode, and full bidirectional communication. The printer can automatically negotiate with the host computer to select the highest performing IEEE 1284 mode supported by both devices. Connectivity and network management 182