Setup Registers
The MicroLink-HM con
fi
gura on can be changed using the setup and con
fi
gura on so ware or by wri ng to modbus
registers using modbus-RTU commands 6 or 16. Command 6 writes to a single register and command 16 writes to a
range of modbus registers. The con
fi
gura on register values are saved in nonvola le memory and are not lost when
MicroLink-HM power is removed.
HART Settings
Bits 9, 8 HART failed mode
0 = Hold last value after HART retries
1 = Preset to register 772 value after HART retries
2 = Preset to IEEE-754 NaN (0 for integers)
Bits 7, 6 HART poll retries
Sets number of HART device poll retries from 1 to 3.
After poll retries, the HART failed mode value is stored in the variable register.
Bits 3 - 0 Number of polled devices -1 Range is 0 to 15. 0 = 1 polled device. 15 = 16 polled devices.
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