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Technical Bulletin—TC-9100 Universal Controller
The TC-9100 Universal Controller has six programmable modules that
may be configured to operate in accordance with one of the 13 algorithms
available in the controller operating system. Algorithms 1 to 6 are
controller algorithms, and algorithms 7 to 13 are calculation algorithms.
All programmable modules have the same set of configuration
parameters, which are listed in
Appendix 1 – Table 1: Item List,
Programmable Module Configuration Parameters
, each with a generic or
“PM Tag” name.
Each programmable module has one Item to define its type and its
options (PMnTYP, n = 1 to 6), 3 Items to define three source signal (or
input) connections (PMnI1@, PMnI2@, and PMnI3@, n = 1 to 6), and 7
operating parameters (PMnKm, n = 1 to 6 and m = 1 to 7). Each
programmable module also has an output that may be read by a
supervisory system at Items OCM1 to OCM6 (Item addresses 0A to 0F
hex). These Items are normally used as source signals (or inputs) to
Output Modules or other programmable modules.
The source signal connections to the programmable modules are normally
one of the analog inputs (AI1 to AI4) or the outputs of other
programmable modules. When a programmable module is given an
algorithm number (which is entered into the PMnTYP Item), each Item is
also given an alias, or “Alg. Tag,” and a specific function within the
selected algorithm, as described in
Appendix 1 – Table 2: Programmable
Module Algorithms
.
Note: The tag names described in the sections that follow are the
algorithm aliases (or Alg Tags) assigned by each algorithm to the
generic programmable module parameters. For example, when the
On/Off Controller Algorithm is used for a programmable module,
the generic PMnK3 parameter is called the switching differential
(DIF).
On/Off Controller
When configured as an on/off controller, the programmable module
continuously compares its Input I1, known as the Process Variable (PV),
with its Working Set Point (WSP), and switches its output (OCM) from
0% to 100% when the PV is equal to or
greater
than the WSP for a
direct-acting controller, or from 0% to 100% when the PV is equal to or
less
than the WSP for a reverse-acting controller. A switching differential
(DIF) is defined in each case in units of the process variable.
Programmable
Module
Configuration
(PM1 to PM6)
Controller
Algorithms
1 to 6 –
General
