Methodology And Register Manipulation To Configure The Programmable Logical Input - ABB TPU2000 Technical Manual

TPU2000/2000R Modbus/Modbus Plus/ Modbus TCP/IP Automation Guide
Physical Input: The opto-isolated binary input that allows external control by physically wiring the input
terminals of the TPU2000R. Physical inputs are labeled (IN1, IN2, IN3, ..., 52A, 52B).
Logical Input: An input equated by the boolean combination of the physical inputs. These inputs are used
by the TPU2000R's state machine and control subroutines. Logical Inputs are labeled (WCI, TCM, ...).
See later in this paragraph for additional labels.
Active Open: This defines the type of connection from the physical input or inputs and means the physical
state of the opto-isolator's logic is inverted. Example: if the voltage across IN1's terminals equals zero,
then the boolean equation will evaluate this term as a logical one. Likewise, when a voltage is applied
to IN1, the boolean equation will evaluate this term as a logical zero.
Active Closed: This defines the type of connection from the physical input or inputs and means that the
physical state of the opto-isolator's logic is the non-inverted. Example: if a voltage is applied across
IN1's terminals, then the boolean equation will evaluate this term as a logical one. Likewise, when a
voltage is applied to IN1, the boolean equation will evaluate this term as a logical zero.
Boolean Logic Input Equation:
Logical
50P-1 =
Logical
WCI
Input Select:
The physical inputs are associated with a bit mask to determine which inputs are used when
resolving the logical input's boolean equation. If the appropriate bit is set, the term will be included
as part of the equation. Likewise, a cleared bit indicates that the physical input term will be ignored.
Negated AND Input:
This is a bit mask that indicates if a selected input is inverted based on the active open or closed state.
The bit mask uses the same associated physical inputs pattern as in the Input Select data.
AND/OR Select:
The combination of the physical inputs' state used to resolve the boolean equation allows for the
algebraic ANDing or ORing of all of the selected physical inputs.
User Definable Names:
Physical inputs, IN1 - IN13, have memory allocated for an eight character (NULL is implied in
character 9) user definable strings.

Methodology and Register Manipulation to Configure the Programmable Logical Input

Four protocol commands are required to view or change the TPU2000R's programmable input setting tables. The
command order for viewing these tables can be retrieved in any sequence, but when the settings are sent to the
TPU2000, the commands must be sent in the following sequence:
Receive Programmable Input Select and Index data.
Receive Programmable Negated AND Input data.
Receive Programmable Input AND/OR Select data.
Receive Programmable Input User Defined Name data.
ORed Physical
IN1 + IN2 + IN3
ANDed Physical
= IN1 * IN2 * IN3
180