ReadStatus Function

Owning Palette: GPIB 488.2 Functions

Requires: Base Development System

Serial polls a single device to get its status byte.

Refer to GPIB Function Defaults for more information about the timeout and address defaults.

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	bus refers to the GPIB bus number. If you have only one GPIB interface in your computer, the default bus number is 0. Refer to the software installation instructions included with the GPIB controller for additional GPIB interfaces.
	address contains the primary address of the GPIB device with which the function communicates. If a secondary address is required, use the MakeAddr function to format the primary and secondary addresses.
	error in describes error conditions that occur before this node runs. This input provides standard error in functionality.
	serial poll response is the status byte of the device at address. Refer to the documentation supplied with the device to learn how to interpret this byte.
	status is a Boolean array in which each bit describes a state of the GPIB Controller. If an error occurs, the function sets bit 15. GPIB error is valid only if bit 15 of status is set. The following table shows the numeric value and symbolic status of each bit in status. This table also includes a description of each bit. Status Bit Numeric Value Symbolic Status Description 0 1 DCAS Device Clear state 1 2 DTAS Device Trigger State 2 4 LACS Listener Active 3 8 TACS Talker Active 4 16 ATN Attention Asserted 5 32 CIC Controller-In-Charge 6 64 REM Remote State 7 128 LOK Lockout State 8 256 CMPL Operation Completed 12 4096 SRQI SRQ Detected while CIC 13 8192 END EOI or EOS Detected 14 16384 TIMO Timeout 15 -32768 ERR Error Detected
	error out contains error information. This output provides standard error out functionality.