What is the longest update time that can be expected from the Analog I/O HART module?
When the Analog I/O HART module connects for the first time, the module polls the device to determine the address. There are 16 possible addresses so there may be a delay before instrument communication begins. Once the address is found the address is reassigned to zero and the HART dialog may begin. Reassigning the address helps to minimize the startup delay. Disabling HART on unused channels will also reduce start-up time. Once the startup dialog is complete the module begins polling for data. Data acquisition time varies depending on the number of active HART channels. Typical data updates occur at a six second interval with all channels enabled for HART.
