ULTRA-COMM+2.PCI two-channel PCI bus serial I/O adapter for the PC and compatibles provides two field-selectable RS-232/422/485 serial ports supporting data rates up to 460.8 Kbytes/sec. The RS-232 mode is for standards serial COM: port requirements; while the RS-422 mode is for long-distance device connections up to 4,000 ft where noise immunity and high data integrity are essential. Up to 31 RS-485 devices can be connected to each port to automate the data collection.
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