Is there a convenient way to extract several flag values as items out of a bitfield? I've got a byte value retrieved over Modbus that contains status flags that I'd like to have as individual items with their own value mappings. I guess I can do masking of the value using preprocessing across several items (I'm actually not sure if this is possible, looking at the list of preprocessing operations, but I expect it probably is somehow) but due to the way the Modbus support in Zabbix works this will trigger 8 separate network retrievals of the same base value. Is there a better way to do this, e.g. some way to have the "base" item retrieved once, temporarily, and then several real item values derived from various fields of this base item?
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