Technical Bulletin—TC-9100 Universal Controller 39
The TC-9100 Universal Controller has six external analog inputs that
may be set by a supervisory system through the N2 Bus serial interface.
The numerical value of an external analog input can be used as an input
to a programmable module (configured as a Control Module or as a
Calculation Module), and can be read by a supervisory system. The value
of an external analog input can also be used as the input to the
Summer/Winter Compensation Module or the Low Limit (Anti-freeze)
Module, where, for example, the value of the outdoor air temperature is
set by the supervisory system and then used in the controller to determine
the level of set point compensation due to a high or low outside
temperature, or to force the controller into Low Limit mode when the
outdoor air temperature is low.
There are no configuration parameters for external analog inputs.
Table 17: External Analog Input Dynamic Items
Item Tag Item Address
(Hex/Dec)
Description
XAI1 16/22 Value of External Analog Input 1
XAI2 17/23 Value of External Analog Input 2
XAI3 18/24 Value of External Analog Input 3
XAI4 19/25 Value of External Analog Input 4
XAI5 1A/26 Value of External Analog Input 5
XAI6 1B/27 Value of External Analog Input 6
Note: For troubleshooting purposes using the Service Module,
“reliability status” bits are available for XAI1 to XAI4 in Item
XST, Diagnostic Status (Item Address 84 hex).
External
Analog Input
Configuration
(XAI1 to XAI6)
Configuration
Parameters
Dynamic
Parameters
To Next Page
Loading...
Need help?
General
