3 Status System
K0472 Revision A
3 - 8
Bit 5 - ESB sets when a standard event has occurred in the Standard Event Register.
Bit 6 - MSS sets when an SRQ is generated - SRQ sets when both the Status byte and the Service
Request Enable register are at logic 1 (AND function).
RS232 Specific
A service request (SRQ) produces the message::SRQ <value>
where:
<value> = the contents of the status summary byte.
The status system data structure sets each bit as follows:
Table 3-3 Status Byte Register
Example commands using the Status Byte and Status Byte Enable registers:
*SRE 16
Generate an SRQ interrupt when messages are available.
*SRE?
Find out what events are enabled to generate SRQ interrupts.
*STB?
Read and clear the Status Byte Enable register.
IEEE 488 Specific
Bit 7 - OSB sets when the pressure operations register bit 10 changes state. The operations
register is a 16 bit register only using bit 10. This bit is a summary of the pressure operations
register.
Bit
Name
Description
0
-
Reserved currently returns 0
1
-
Reserved currently returns 0
2
EAV
Error in errror queque
3
-
Reserved currently returns 0
4
MAV
Messages available in output queque
5
ESB
Summary bit from standard event
6
MSS
Summary bit after service request - SRQ
7
OSB
Summary bit from standard operations status
