SCSI contingent allegiance condition — On a computer SCSI connection, a contingent allegiance condition occurs while a SCSI device reports an error. SCSI communication takes place between an initiator and a target. The initiator sends a command to the target which then responds. At… … Wikipedia
SCSI — Small Computer System Interface, or SCSI (pronounced skuh zee [ [http://www.bartleby.com/61/56/S0175650.html SCSI] . American Heritage Dictionary .] [cite book|title=The Book of SCSI|last=Field|pages=1] ), is a set of standards for physically… … Wikipedia
SCSI Status Code — A SCSI Status Code is used to determine the success or failure of a SCSI command. At the end of any command, the target returns a Status Code byte which should be one of the following:00h OK02h Check conditionWhen the target returns a Check… … Wikipedia
SCSI Send Diagnostic Command — The SCSI Send Diagnostic command is used to instruct a target device to perform a self test on a specific LUN. The CDB structure is:The special parameter fields in the CDB have the following meaning:*PF Page Format: **0 SCSI 1 compliant (vendor… … Wikipedia
SCSI Test Unit Ready Command — The SCSI Test Unit Ready command is used to determine if a device is ready to transfer data (read/write), i.e. if a disk has spun up, if a tape is loaded and ready etc. The device does not perform a self test operation. See the Send Diagnostic… … Wikipedia
Parallel SCSI — Centronics 50 SCSI plug Parallel SCSI (formally, SCSI Parallel Interface, or SPI) is one of the interface implementations in the SCSI family. In addition to being a data bus, SPI is a parallel electrical bus: There is one set of electrical… … Wikipedia
SES-2 Enclosure Management — The introduction of Serial Attached SCSI (SAS) as the most recent evolution of SCSI required to re define the related standard for enclosure management, called SCSI Enclosure Services . SES 2, or SCSI Enclosure Management 2 first revision was… … Wikipedia
Key Code Qualifier — KCQ redirects here. For the radio station in Saginaw, Michigan, see WKCQ Key Code Qualifier is a computer term used to describe an error code returned by a SCSI device.When a SCSI target device returns a check condition in response to a command,… … Wikipedia
computer — computerlike, adj. /keuhm pyooh teuhr/, n. 1. Also called processor. an electronic device designed to accept data, perform prescribed mathematical and logical operations at high speed, and display the results of these operations. Cf. analog… … Universalium
Modbus — is a serial communications protocol published by Modicon in 1979 for use with its programmable logic controllers (PLCs). Simple and robust, it has since become one of the de facto standard communications protocols in the industry, and it is now… … Wikipedia
