Status Registers
Overview
Table 4.10 Standard Event Status Register
Bit | Bit Weight | Bit Name | Description |
0 | 1 | Operation | Set if *OPC command has been received |
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| Complete | and all pending operations have been |
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| (OPC) | completed. The message, Event |
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|
| Operation Complete, is loaded into the |
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|
| Error/Event Queue. |
1 | 2 | Request Control | Not implemented. Always set to 0. |
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| (RQC) |
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2 | 4 | Query Error | Set if an attempt is being made to read |
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| (QYE) | data from the output queue when no |
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| output is either present or pending. |
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| Suggests that data in the output queue has |
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| been lost. See “Query Error List” on |
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| page 121 for possible error codes. |
3 | 8 | Device Dependent | Set if there is a |
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| Error |
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|
| (DDE) | 120 for possible error codes. |
4 | 16 | Execution Error | Set if a program data element, following a |
|
| (EXE) | header, was evaluated by the power |
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| supply as outside of its legal input range, |
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| or is otherwise inconsistent with the power |
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| supply’s capabilities. Suggests that a valid |
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| program message could not be properly |
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| executed due to some power supply |
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| condition. See “Execution Error List” on |
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| page 118 for possible error codes. |
5 | 32 | Command Error | Set if an IEEE488.2 syntax error has been |
|
| (CME) | detected by the parser, an unrecognized |
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| header was received, or a group Execute |
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| Trigger was entered into the input buffer |
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| inside an IEEE 488.2 program message. |
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| See “Command Error List” on page 118 |
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| for possible error codes. |
6 | 64 | User Request | Set if the bit is unmasked and the |
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| (URQ) | instrument wishes to support a 488.2 user |
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| request event. An event occurs when the |
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| instrument detects the activation of a user |
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| request local control. The message, Event |
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| |
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| Error/Event Queue. |
7 | 128 | Power ON | Not implemented |
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| (PON) |
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| Reserved | Reserved for possible future use by IEEE. | |
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| Bit values are reported as zero. |
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78 | Operating Manual for Multichannel Functionality |