Model 7002Switch System Instruction Manual - Advanced Test ...

IEEE-488 Reference5.14 Sense subsystemsThe sense subsystems are used to read digital input ports. The :SENSe1 Subsystem is used to read the built-in digital input lines.The :SENSe2 through :SENSe11 Subsystems are used to read the inputs of digital cards installed in slots 1 through 10respectively.Table 5-9SENSe command summaryCommand:SENSe[1]:TTL[1]:DATA?:SENSeX:DATA? DescriptionCommand path to read internal input line.Read internal digital input line.Specify slot; X=2 (slot 1) through 11 (slot 10).Read specified input channels for the specified slot.Notes:1. Brackets ([ ]) are used to denote optional character sets. These optional characters do nothave to be included in the program message. Do not use brackets ([ ]) in the program message.2. Angle brackets (< >) are used to indicate parameter type. Do not use angle brackets (< >) inthe program message.3. Upper case characters indicate the short-form version for each command word.4. At least one space is required between a command word and the parameter.:SENSe[1] Subsystem:TTL[1]:DATA?:SENSe[1]:TTL[1]:DATA?Read internal input portShort-formformatsDescription:sens:ttl:data?This command is used to read the single line of the digital input port. After sending this commandand addressing the Model 7002 to talk, a value indicating the status of the port will be sentto the computer.A value of “1” indicates that the input port is high (ON), and a value of “0” indicates that theport is low (OFF).Programmingexample10 OUTPUT 707; “:sens:ttl:data?”20 ENTER 707; A$30 PRINT A$40 ENDLine 10 Read the input port.Line 20 Addresses the 7002 to talk.Line 30 Displays the status of the input port (0 or 1).5-99