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SetBit - method of object PmBuffer

Description:
Writing a single bit.
Syntax:
Empty SetBit(Long nOffset, Long nBitIndex, Boolean bValue)
Calling:
PmBuffer.SetBit(nOffset, nBitIndex, bValue)
Parameters:
nOffset(Long) Defines the position of written value in the data block.

The whole written item muyst be inside the data block, or the whole item is added to the end of the data block. The item is written either whole or not read at all.

>= 0 - Index (in bytes, zero-based index) in data block.
-4 - The internal automatic position is used (see AutoOffset). It points behind the last read or written value and increases continually.

If the items are read/written one by one then it is not necessary to define the position, but it is better to use this automated positioning.

nBitIndex(Long) Bit index (zero-based index). The value must be any non-negative integer (it must define the position inside the data area range).
bValue(Boolean) Written value.
Note:
This method is also functional for Web panels.
 
For this method, it is not possible to set nOffset = -2 (contrary to methods SetUint8 ...).

History:
Pm9.00.05: Created
PROMOTIC 9.0.6 SCADA system documentation - MICROSYS, spol. s r.o.

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