SMAR HI302, User Manual

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HI302 - User’s Manual
1.3
HCD (HART Command Definition) – It contains the HART command description for each
device type or version. This description stores information needed by the module to
communicate and the data read on the HIRT or HTV blocks. The HCD blocks defining the
universal and the common practice commands, as well as all commands specific to Smar
instruments, are already stored in the equipment’s memory and do not require any
configuration from the user. See the Appendix B for details.
HWPC (HART Writeable Parameter Command Correlation) – This block stores
information about all parameters to be written on the instrument and mapped on the HVT
block.
See table with detailed definitions on the Appendix A blocks.
In order to support the analog circuits on HI302-I and HI302-O modules, use the MAI or
MAO blocks, respectively, to convert the analog 4-20 mA standard to FF or FF to 4-20
mA. Inquire about our availability of AI or AO blocks.
MAI – Multiple Analog Input
The MAI block makes available to the fieldbus network 8 variables of the I/O subsystem
through 8 output parameters, namely, OUT_1 to OUT_8. These parameters correspond to
the current value, in percentage, on the 8 analog inputs.
MAO – Multiple Analog Output
The MAO block makes available to the I/O Subsystem 8 input parameters, IN_1 to IN_8.
These parameters correspond to the current value on the 8 analog outputs.