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SIMATIC VPU200/565 Programming Manual
If the rungs of ladder logic are shown on the screen, then the following
function keys appear when the spacebar is pressed:
If the chart is shown instead of the rungs of ladder logic, the UP (F2),
DOWN (F3), and WORDS (F7) function keys will not be available.
The Loop function key (F8) is used to view and change the parameters of
loops. When the LOOP function key is pressed, the function keys will
change to those for loop parameters. These function keys are shown below:
The ABORT (F1) function key returns to the previous display. The READ
(F8) function key obtains the value for the word which appears on the
prompt line. The remaining function keys are the parameters for loops:
The LKC (F2) function key is for loop gain;
The LTD (F3) function key is for loop rate (derivative);
The LTI (F4) function key is for loop reset (integral);
The LMX (F5) function key is for loop bias;
The LTS (F6) function key is for loop sample rate; and
The LSP (F7) function key is for loop setpoint
After any of these are chosen, the prompt line will change to reflect the
parameter chosen. Key in the loop number for the parameter you wish to
view or change. The number cannot be greater than 64.
Debug for 565 Operations
4-3
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