Function blocks
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MN05013005E
253
Setting date/time
This function block allows you to selectively place the date
and time onto the network. All other stations accept the date
and time of the sending station. The function block name is
SC01 (send clock).
Figure 130: EZD circuit diagram with SC function block
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The following applies if the output of a pulse width
modulator is used as a coil in the circuit diagram:
The state of the output is not refreshed from the circuit
diagram.
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The following applies to the minimum on duration:
• The minimum on duration is the same as the minimum off
duration.
• The minimum on duration must not exceed 10 % of the
period duration. The ratio of period duration/minimum on
duration (P/M) determines which percentage of the
manipulated variable has no effect. The minimum on
duration must be set as low as possible so that the P/M
ratio is as high as possible. If the minimum on duration
must not be too low, due to the output relay, the period
duration must be increased accordingly.
• The minimum on duration is 1 ms.
• If the actual value of the pulse length is less than the
minimum on duration, the minimum on duration has the
effect of the pulse time. Note the state of the contact
PW..E1.
• If the off duration of the pulse is less than the minimum
off duration, outputs Q1 and Q2 are continuously in
operation. Note the state of the contact PW..E1.
HW01QW1---------------------------Ä SC01T
