STATus:ALARm[:EVENt]?
Syntax
STATus:ALARm[:EVENt]?
Description
This command queries the event register for the Alarm Register group.
Used With:
34921A through 34925A Multiplexer Modules
34950A Digital I/O Module (digital input and counter channels only)
34952A Multifunction Module (digital input and totalizer channels only)
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For more information on the SCPI Status System for the Agilent 34980A, see the Status System Diagram. |
Remarks
The following table lists the bit definitions for the Alarm Register.
|
Bit Number |
Decimal Value |
Definition | |
|
0 |
Alarm 1 |
1 |
Alarm occurred on Alarm 1. |
|
1 |
Alarm 2 |
2 |
Alarm occurred on Alarm 2. |
|
2 |
Alarm 3 |
4 |
Alarm occurred on Alarm 3. |
|
3 |
Alarm 4 |
8 |
Alarm occurred on Alarm 4. |
|
4 |
Queue Empty |
16 |
Alarm queue status (0 = empty, 1 = not empty). |
|
5 |
Queue Overflow |
32 |
Alarm data lost due to alarm queue overflow. |
|
6-15 |
Reserved |
Reserved |
Reserved for internal use. |
Note that if any of bits 0 through 3 are set, bit 4 will also be set to indicate that the Alarm Queue is not empty.
Once a bit is set, it remains set until cleared by reading the event register or the *CLS (clear status) command.
Return Format
The command reads the event register and returns a decimal value which corresponds to the binary-weighted sum of all bits set in the register. For example, if bit 1 (decimal value = 2) and bit 4 (decimal value = 16) are set, this command will return "+18".
Example
The following command reads the event register (bits 1, 3, and 4 are set).
STAT:ALAR?
Typical Response: +25