Channel number
Channel numbers are used to uniquely identify the inputs and outputs of a module (device -
CFU) and to assign channel-specific diagnostic messages.
Channel type
Selection of the channel type (for one DIQ channel or all DIQ channels)
● Digital DI
● Digital output DQ
Comparison value
You can configure a comparison value within the count limits. When the count value reaches
the comparison value the counter reacts according to the parameterization.
Configuration
Systematic arrangement of the individual modules.
Configuration control
Function that enables flexible adaptation of the actual configuration based on a defined
maximum configuration via the user program. Input, output and diagnostics addresses remain
unchanged.
Connection plug
Physical connection between device and cable.
Count limits
The count limits define the value range of the count value. The count limits are configurable and
can be changed during runtime.
Crimping
Procedure in which two components, e.g. wire end ferrule and cable, are connected with each
other by plastic strain.
Dark period
Dark periods occur during shutdown tests and complete bit pattern tests. The fail-safe output
module switches test-related zero signals to the active output. This output is then briefly
disabled (= dark period). An adequate carrier → actuator will not respond to this and will remain
activated.
Glossary
SIMATIC CFU
204 Commissioning Manual, 08/2019, A5E39252870-AD
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