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Data type | Name | Description |
|---|---|---|
| boolean | init | T = initialize, F = regular run init = F: reads the socket "socketNumber" from the VME memory of the DEVIL "DEVILIndex" and returns the two parts |
| I32 | DEVILIndex | Index in the range [0, 1, 2, 3] corresponding to: INDEX 0, 1, 2, 3 |
| I32 | socketNumber | Pointer to the acquisition buffer in the range [0, 1926] |
| [DBL] | part X | Array of 32 DBL components containing the raw values of the X signals coming from both electron and positron BPMs. The components are in the same order of the values in the DEVIL memory locations. |
| [DBL] | part Y | Array of 32 DBL components containing the raw values of the Y signals coming from both electron and positron BPMs. The components are in the same order of the values in the DEVIL memory locations. |
| errorCluster | errorIn | When true, the VI does nothing and simply passes the error out. |
Indicators
Data type | Name | Description |
|---|---|---|
| [DBL] | part X | Array of 32 DBL: see corresponding control description above. The array is returned both for read and write operations. |
| [DBL] | part X | Array of 32 DBL: see corresponding control description above. The array is returned both for read and write operations. |
| errorCluster | errorOut |
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| Each one of the 4 DEVILs has a circular buffer of 1927 lines named "sockets". Write operations of the four circular buffers are synchronized via a common stobe so that the four write pointers are always alligned. At each strobe, each DEVIL stores a "socket" composed as:
[DBL] 32 values of the BPM X signals from the Bergoz modules read from that DEVIL;
[DBL] 32 values of the BPM Y signals from the Bergoz modules read from that DEVIL. The 32 components in part X and Y are ordered according to the cabling and do not necessarily follow the sequence of the BPMs along the vacuum chamber. Moreover the 32 values refer to both e- and e+ rings for which the BPMs sequence is obviously different. As a consequence, part X and Y must be considered as raw containers and their content must be further processed in order to reconstruct the real orbit.
DBL ACQNum [0, 1926]; The socket header is written twice: one time at the beginning of the socket (before part X) and another time again in the middle of the socket socket (before part Y. Format and ) the content of the two headers are identical to each otherbeing the same; this is due to historical reasons and – although it is a waste of memory space – it was left in order not to compromise the functioning of other pieces of code that access the same memory area. |
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Data type | Name | Description |
|---|---|---|
| I32 | DEVILIndex | Index in the range [0, 1, 2, 3] corresponding to: INDEX 0, 1, 2, 3 |
| enum | mode | [init, read, write X and Y, write X, write Y] (read)
|
| [DBL] | part X | Array of 32 DBL components containing the raw values of the X signals coming from both electron and positron BPMs. The components are in the same order of the values in the DEVIL memory locations. |
| [DBL] | part X | Array of 32 DBL components containing the raw values of the Y signals coming from both electron and positron BPMs. The components are in the same order of the values in the DEVIL memory locations. |
| errorCluster | errorIn |
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