SMAR HI302, User Manual

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Advanced Configuration
4.6
Setting the HWPC block Configuration
The HWPC block completes the configuration done in the HCD block. For each HCD
block with parameters that can be written, it is necessary to have a corresponding HWPC
block with the same code in the definition library HCD_CODE.
The HWPC block parameters have the following structure:
1. The parameter location in the block.
1.1 Index: It is the parameter relative index in the block, where it resides (1 byte).
1.2 Parameter Sub-index, 1 byte.
<Byte1>: Parameter relative index in the block.
<Byte2>: Parameter Sub-index.
2. Parameter Writing Command
2.1 Parameter relative index of the HCD block that describes the writing command, 1
byte.
2.2 Relative position of the parameter description in the HCD block, 1 byte.
<Byte3>: Parameter relative index of the HCD block that defines the command used to
write in the HART device.
<Byte4>: Relative position of the HART variable in the HCD block parameter.
3. Parameter Reading Command
3.1 Parameter relative index of the HCD block that describes the reading command, 1
byte.
<Byte5>: Parameter relative index of the HCD block that defines the command used for
the parameter reading.
This parameter should have information about HART commands that are used to write
and read the corresponding parameters in the HVT and HIRT blocks. The HWPC block
has 30 parameters of this type, allowing the writing in 30 different HART variables.
IMPORTANT
If the parameter is written and there is no corresponding configuration in the HWPC
block, no HART command will be generated to change the variable in the device.