Nematron Pointe Controller - Manual (Page 409)

Pointe Controller User Guide Appendix C: Ladder Diagram Block Reference
407
Functional Description
This block always passes the Select input state (SEL) through to the Enable Out
output state (ENO) without change; when SEL becomes on, ENO is turned on,
and when EN becomes off, ENO is turned off.
The block function is executed every time the ladder is scanned , regardless of
whether SEL is on or off. The state of SEL determines which Input Value (IN0 or
IN1) is selected and placed in the Output Value (OUT). If SEL is on, then IN1 is
placed in OUT. If SEL is off, then IN0 is placed in OUT.
Configuration Reference
The parameters of this block are described in the following table:
Param Name Config Var Type Description
SEL Select no - The state of the rung (off/on)
received from the left. Also
determines which input value is
selected to place in the output.
ENO Enable
Out no - The state of the rung (off/on)
passed to the right.
IN0 Input
Value
OFF req any Input
any Output
any Memory
T_DONE
T_VALUE
T_PREVAL
Numeric
The input value that is selected if
the rung is off.
IN1 Input
Value ON req any Input
any Output
any Memory
T_DONE
T_VALUE
T_PREVAL
Numeric
The input value that is selected if
the rung is on.
OUT Output
Value req any Input
any Output
any Memory
The result of selecting one of two
input values.
NOTE: This function does not check for bit register overflow. You can assign any
variables you wish, but mixing variable sizes – for example, a 32-bit input and an
8-bit output – may result in unusable output.