5 Function blocks
5.12 DB, data block
186
Control Relay easy800
11/11 MN04902001Z-EN
www.eaton.com
•
Analog output QA01.
•
Output
…
QV of a different function block.
Output
QV: The output provides the input value when triggered as an integer.
You can assign the following operands to output
…
QV:
•
Analog output QA01.
•
Markers MD, MW, MB.
Retention
Data function blocks can be operated with retentive actual values.
The quantity can be selected in the SYSTEM RETENTION menu.
Function of the function block
The value at input >I1 is only transferred with a rising trigger edge to an
operand (e.g.: MD42) at output QV. It contains the value up to the next time
it is overwritten.
Figure 129:Signal diagram of data function block
1: Value at input DB..>I1
2: Trigger coil DB…T_
3: Value on DB…QV>
Memory
36 + per
4 Byte/Constant at function block input
Cycle time [
μ
s]
easy800 standard
easy800-SWD
28
9
2
3
1
