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Status Registers
Overview
80 Operating Manual for Multichannel Functionality (GPIB-M)
Master
Summary
Status (MSS)
The Master Summary Status message indicates that the power supply has at least one
reason for requesting service. Although the MSS message is sent in bit position 5 of
the response to *STB?, it is not sent in response to a serial poll and not considered
part of the Status Byte.
MSS is TRUE if:
• Status Byte bit 0 AND Service Request Enable Register bit 0, or
• Status Byte bit 1 AND Service Request Enable Register bit 1, or
• Status Byte bit 2 AND Service Request Enable Register bit 2, or
• Status Byte bit 3 AND Service Request Enable Register bit 3, or
• Status Byte bit 4 AND Service Request Enable Register bit 4, or
• Status Byte bit 5 AND Service Request Enable Register bit 5, or
• Status Byte bit 7 AND Service Request Enable Register bit 7.
Request
Service
(RQS)
RQS is TRUE if the Service Request Enable Register has a bit set and there is a
corresponding bit within the Status Byte.
The SRQ line of the GPIB will be set. The SRQ annuciator will be lit.