User Manual

Wiring with easy800
224
08/04 AWB2528-1423GB
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 102: easy800 circuit diagram with SC function block
h
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.
h
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 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
on duration, outputs Q1 and Q2 are continuously in
operation. Note the state of the contact PW..E1.
HW01QW1---------------------------Ä SC01T