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4.4.Client Side Map Descriptors
4.4.1.FieldServer Related Map Descriptor Parameters
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Map_Descriptor_Name | Name of this Map Descriptor | Up | to | 32 | alphanumeric | |
characters |
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Data_Array_Name | Name of Data Array where data | One | of the | Data | Array names | |
is to be stored in the FieldServer | from “Data Array” section above | |||||
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Data_Array_Offset | Starting location in Data Array | 0 to maximum specified in “Data | ||||
Array” section above | ||||||
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Function | Function of Client Map Descriptor | Rdbc, Wrbc, Wrbx |
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4.4.2. | Driver Related Map Descriptor Parameters |
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| One | of the Node | |
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| Node_Name |
| Name of Node to fetch data from |
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| “Client | Node | ||||
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| Descriptor” above |
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| Specify Poll_type |
| For | Read | Map |
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| Descriptors : |
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| ‘Recall’ or 2 always poll for current indications |
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| Recall, 2, Poll, 1, |
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| ‘Poll’ or 1 request for indications if changed |
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| SCS128_Poll_Type* |
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| For | Write | Map | ||
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| ‘Controls’ or 3 writes controls to target device |
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| ‘Cutoff’ or 5 or 6 send ‘cutoff’ command to |
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| Controls, 3 |
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| target device |
| Cutoff, 5, 6 |
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| ‘Flag’ - each byte of Indication statuses will be |
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| stored in 8 consecutive locations in the Data |
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| Array. On write; one Control byte will be |
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| composed from 8 consecutive locations. |
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| ‘Byte’- each byte of Indication statuses will be |
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| stored as an 8 Bit Integer at the specified |
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| location. On Write; one Control byte will be |
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| composed from a single location. |
| Flag, Byte, Register, | ||
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| Data_Type* |
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| ‘Register’ - two bytes of Indication statuses will |
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| be stored as a 16 Bit integer at the specified |
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| location. On Write; two Control bytes will be |
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| composed from a single location. |
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| will be stored as 32 Bit integers at the |
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| specified location. On Write, four Control bytes |
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| will be composed from a single location. |
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| Refer to Appendix A |
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| Length of Map Descriptor |
| Flag: |
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| Byte: |
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| Length* |
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| Number of indications to store or number of |
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| Register: |
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| controls to write as per Data_Type. |
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4.4.3.Timing Parameters
Column Title | Function | Legal Values |
Scan_Interval | Rate at which data is polled | ≥0.001s |
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