Logic Maestro: Logic Symbol Definitions
Complex logic functionality can be designed and enabled in the Eclipse system by using the logic maestro screen
Below is a list of current Logic maestro symbols, by right clicking on the symbol will also bring up a truth table
AND Gate
Combines two or more inputs to generate a single output. The default is two inputs but by right clicking on the AND gate to display the options menu additional inputs can be added. Unused inputs will default to the TRUE state. The output is only true if all the inputs are true. The AND gate adds a 25ms processing delay.
NAND Gate
Combines two or more inputs to generate a single output. The default is two inputs but by right clicking on a NAND gate to display the menu additional inputs can be added. Unused inputs will default to the TRUE state. The output is only true if at least one input is false. The NAND gate adds a 25ms processing delay.
OR Gate
Combines two or more inputs to generate a single output. The default is two inputs but by right clicking on an OR gate to display the menu additional inputs can be added. Unused inputs will default to the TRUE state. The output is only true if one or more inputs are true. The OR gate adds a 25ms processing delay.
NOR Gate
Combines two or more inputs to generate a single output. The default is two inputs but by right clicking on a NOR gate to display the menu additional inputs can be added. Unused inputs will default to the TRUE state. The output is only true if all inputs are false. The NOR gate adds a 25ms processing delay.
BUFFER Element
Used between a crosspoint trigger and a crosspoint action to reduce the system resource usage. There is a constraint on the maximum number of possible actions by crosspoint triggers and crosspoint actions imposed by system resources. The BUFFER element adds a 25ms processing delay.
NOT Element
A NOT element inverts the input so that when the input is OFF the output is ON; when the input is ON the output is OFF. The NOT function adds a 25ms processing delay.
LATCH Element
The latch element creates a true or false output that can be set or cleared by inputs to toggle, set or reset inputs. The latch element will maintain the state it is set to until that state is changed via a set, reset or toggle. The latch element can be used with the toggle input only connected and the set and reset inputs not connected. In this case the latch will change state when it is toggled by an external input. The toggle operates on the rising edge of an input so if the input goes to true the latch will toggle to the opposite to its current state. When the toggle input goes false the latch will remain in its current state until the toggle input goes true again. The LATCH function adds a 25ms processing delay
ENABLE Element
The ENABLE logic element allows a logic true or always on input to be placed in a control sequence design. This allows control sequences to be created with temporary external inputs or stubs which are known to be always on. This logic element is useful for testing the logic design.
DISABLE Element
The DISABLE logic element allows a logic false or always off input to be placed in a control sequence design. This allows control sequence designs to be created with temporary external inputs or stubs which are known to be always off. This logic element is useful for testing the logic design.
Below is a list of current Logic maestro symbols, by right clicking on the symbol will also bring up a truth table
AND Gate
Combines two or more inputs to generate a single output. The default is two inputs but by right clicking on the AND gate to display the options menu additional inputs can be added. Unused inputs will default to the TRUE state. The output is only true if all the inputs are true. The AND gate adds a 25ms processing delay.
NAND Gate
Combines two or more inputs to generate a single output. The default is two inputs but by right clicking on a NAND gate to display the menu additional inputs can be added. Unused inputs will default to the TRUE state. The output is only true if at least one input is false. The NAND gate adds a 25ms processing delay.
OR Gate
Combines two or more inputs to generate a single output. The default is two inputs but by right clicking on an OR gate to display the menu additional inputs can be added. Unused inputs will default to the TRUE state. The output is only true if one or more inputs are true. The OR gate adds a 25ms processing delay.
NOR Gate
Combines two or more inputs to generate a single output. The default is two inputs but by right clicking on a NOR gate to display the menu additional inputs can be added. Unused inputs will default to the TRUE state. The output is only true if all inputs are false. The NOR gate adds a 25ms processing delay.
BUFFER Element
Used between a crosspoint trigger and a crosspoint action to reduce the system resource usage. There is a constraint on the maximum number of possible actions by crosspoint triggers and crosspoint actions imposed by system resources. The BUFFER element adds a 25ms processing delay.
NOT Element
A NOT element inverts the input so that when the input is OFF the output is ON; when the input is ON the output is OFF. The NOT function adds a 25ms processing delay.
LATCH Element
The latch element creates a true or false output that can be set or cleared by inputs to toggle, set or reset inputs. The latch element will maintain the state it is set to until that state is changed via a set, reset or toggle. The latch element can be used with the toggle input only connected and the set and reset inputs not connected. In this case the latch will change state when it is toggled by an external input. The toggle operates on the rising edge of an input so if the input goes to true the latch will toggle to the opposite to its current state. When the toggle input goes false the latch will remain in its current state until the toggle input goes true again. The LATCH function adds a 25ms processing delay
ENABLE Element
The ENABLE logic element allows a logic true or always on input to be placed in a control sequence design. This allows control sequences to be created with temporary external inputs or stubs which are known to be always on. This logic element is useful for testing the logic design.
DISABLE Element
The DISABLE logic element allows a logic false or always off input to be placed in a control sequence design. This allows control sequence designs to be created with temporary external inputs or stubs which are known to be always off. This logic element is useful for testing the logic design.
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