Spectrum Controls 1756sc-OF8H Series A - Manual (Page 14)

xiv ControlLogix ™ Analog HART Modules
Step response time – The time required for the A/D signal to reach 95%
of its expected, final value, given a full-scale step change in the output
data word.
Tags - Identifiers for configuration, data, and status information found
within the module. Tags allow the user to modify specific module
attributes and view data and status.
Unconnected Message - A ControlNet-based message that is sent
without intervention with the PLC controller.
Update time – The time for the module to sample and convert a channel
input signal and make the resulting value available to the ControlLogix
processor.