RS232 / IEEE-488.2 Common Commands
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5-8
*SRE
Service Request Enable Command
The command
"*SRE <Number>"
sets the mask for the Service Request Enable
Register. The individual numbers here have the following meaning:
Decimal value
Contents of the Service Request Enable Register
0
Resets the register.
1
(Bit 0), sets measurement value
2
(Bit 1), sets Error message like "Overflow", "Sensor?", "Div/0"
4
(Bit 2), sets Error Available (EAV)
16
(Bit 4), sets Message Available (MAV).
32
(Bit 5), sets Event Summary Bit (ESB).
128
(Bit 7), sets button pressed
Bit 3 and 6 are not assigned.
*SRE?
Service Request Enable Query
The command
"*SRE?"
reads the contents of the Service Request Enable Register.
The meaning of the contents of this register is as described above for the *SRE
command.
*STB?
Read Status Byte Query
The command
"*STB?"
reads out the status byte of the 5017. The value of the Status
Byte is always 0, because the measurement value is set back after a new command.
Use SRQ if you want to check when a maeasurement value is available.
Decimal value
Meaning in the status byte register
1
(Bit 0), Measurement Value available
2
(Bit 1), Error like "Overflow", "Sensor?", "Div/0" occured
4
(Bit 2), Error Queue.
16
(Bit 4), Message Queue.
32
(Bit 5), Event Summary Bit (ESB).
64
(Bit 6), Master Summary Status (MSS)/ Request Service (RQS)
128
(Bit 7), Button pressed
