Keithley SourceMeter 2600 Series Reference Manual page 539

Series 2600 System SourceMeters Reference Manual
To convert from decimal to binary, use the information shown in
example, to set bits B0, B4, B7, and B10, a decimal value of 1169 would be used
for the mask parameter (1169 = 1 + 16 + 128 + 1024).
Reading registers
Any register in the status structure can be read either by sending the common
command query (where applicable), or by including the script command for that
register in either the print() or print(tostring()) command. The print()
command returns a numeric value, while the print(tostring()) command
returns the string equivalent. For example, any of the following commands
requests the Service Request Enable register value:
*SRE?
print(tostring(status.request_enable))
print(status.request_enable)
The response message will be a decimal value that indicates which bits in the
register are set. That value can be converted to its binary equivalent using
D-6. For example, for a decimal value of 37 (binary value of 100101), bits B5, B2,
and B0 are set.
Status byte and service request (SRQ)
Service request is controlled by two 8-bit registers; the Status Byte Register and
the Service Request Enable Register.
registers.
Status byte register
The summary messages from the status registers and queues are used to set or
clear the appropriate bits (B0, B1, B2, B3, B4, B5, and B7) of the Status Byte
Register. These summary bits do not latch, and their states (0 or 1) are solely
dependent on the summary messages (0 or 1). For example, if the Standard
Event Register is read, its register will clear. As a result, its summary message will
reset to 0, which in turn will reset the ESB bit in the Status Byte Register.
Figure D-7
Return to Appendix D topics
Status Model D-11
Figure
shows the structure of these
2600S-901-01 Rev. A / May 2006
D-6. For
Figure