Function blocks
189
1SVC 440 795 M1100
•Constants
• Markers MD, MW, MB
• Analog inputs IA01 to IA04
– IA01: Terminal I7
– IA02: Terminal I8
– IA03: Terminal I11
– IA04: Terminal I12
• Analog output QA01
• Actual value …QV> of another function block
Actual value …QV>
The actual value …QV> can be assigned the following
operands:
• Markers MD, MW, MB
• Analog output QA01
Displaying the parameter set in the PARAMETERS
menu
• + Access enabled
• – Access disabled
Contacts
• CF01OF to CF04OF: Actual value f Upper setpoint
• CF01FB to CF04FB: Actual value F Lower setpoint
• CF01ZE to CF04ZE: Actual value = Zero
Coils
CF01EN to CF04EN: Enable of the counter with coil status = 1.
Memory requirement of the frequency counter
The frequency counter function block requires 40 bytes of
memory plus 4 bytes per constant on the function block
inputs.
Retention
The frequency counter does not retain actual values, as the
frequency is remeasured continuously.
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