SMAR HI302, Руководство пользователя

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HI302 - User’s Manual
3.5
Configuring the HIRT Block
The block has a set of parameters that map all the HART variables that can be accessed
by the universal commands and by the “common practice” commands. Remember that
there is a HIRT block for each HART device installed and that the configuration may vary
according to the application mode and type.
A minimum set of parameters needs a configuration to allow the HI302 to work properly.
Most of the parameters have standard values that are suitable for many operation cases.
Thus, it is not necessary to download them. However, a comprehensive analysis must
be
done in order to determine the best profile for each device configuration. The HI302 offers
several resources that must be understood. The parameters that require configuration to
work are the following:
♦
MODE_BLK : Should be set on AUTO . If it is in OS, the communication with the
respective device is interrupted. When the block is set on OS, it returns to the initial
Identification state. When it is set on AUTO, all the update and identification processes
are repeated.
♦
HART_CHANNEL : Indicates the channel the device is installed on, from 1 to 8. In
normal operation, any change in this parameter, will stop the HART communication.
See the HCFG.COMM_ENABLE parameter.
♦
POLL_ADDR : Indicates the polling address that has been configured in the device,
from 0 to 15. This address is used to recognize the device if the command 0 has been
selected in the ID_CMD parameter.