California Instruments 801RP Series User And Programming Manual
Also see for 801RP Series: Training manual
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Contents
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User and Programming Manual - Rev P California Instruments16.2. Standard Event Status GroupThis group consists of an Event register and an Enable register that are programmed byCommon commands. The Standard Event register latches events relating to interfacecommunication status. It is a read-only register that is cleared when read. The StandardEvent Enable register functions similarly to the enable registers of the Operation andQuestionable status groups.Command Action*ESE programs specific bits in the Standard Event Enable register.*ESR? reads and clears the Standard Event register.The PON bit in the Standard Event register is set whenever the AC source is turned on.16.3. Status Byte RegisterThis register summarizes the information from all other status groups as defined in the IEEE488.2 Standard Digital Interface for Programmable Instrumentation. The bit configuration isshown in Table 15.Command Action*STB? reads the data in the register but does not clear it (returns MSS in bit 6)The MSS BitThis is a real-time (unlatched) summary of all Status Byte register bits that are enabled bythe Service Request Enable register. MSS is set whenever the AC source has one or morereasons for needing service. *STB? reads the MSS in bit position 6 of the response but doesnot clear any of the bits in the Status Byte register.The MAV bit and Output QueueThe Output Queue is a first-in, first-out (FIFO) data register that stores AC source-to-controller messages until the controller reads them. Whenever the queue holds one or morebytes, it sets the MAV bit (bit 4) of the Status byte register.October 2005 RP Series72 |
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