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4 Wiring with
4.15 Circuit examples
158
Operating instructions
05/10 MN05013003Z-EN
www.eaton.com
If the relay coils were activated, easy transfers the result to the contacts. M8
is now open again. No new pulse can be formed until I1 has opened, since
M7 is open for as long as I1 is closed.
4.15.2.2 How does the value reach the shift register?
When shift pulse M8 = ON, the state of I2 (VALUE) is transferred to storage
location M1.
If I2 is activated, M1 is set. If I2 is deactivated, M1 is deactivated via break
contact I2.
4.15.2.3 How is the result shifted?
easy activates the coils in accordance with the rung and its result, from top
to bottom. M4 assumes the value of M3 (value 0 or 1) before M3 assumes
the value of M2. M3 assumes the value of M2, M2 the value of M1 and M1
the value of I2.
4.15.2.4 Why are the values not constantly overwritten?
In this example, the coils are controlled only by the S and R functions, i.e. the
values are retained in on or off states even though the coil is not constantly
activated. The state of the coil changes only if the rung up to the coil is
activated. In this circuit, the marker relay is therefore either set or reset. The
rungs of the coils (storage locations) are only activated via M8 for one cycle
time. The result of activating the coils is stored in easy until a new pulse
changes the state of the coils.
4.15.2.5 How are all the storage locations cleared?
When I3 is activated, all the R coils of storage locations M1 to M4 are reset,
i.e. the coils are deactivated. Since the reset was entered at the end of the
circuit diagram, the reset function has priority over the set function.
4.15.2.6 How can the value of a storage location be transferred?
Use the N/O or N/C contact of storage locations M1 to M4 and wire them to
an output relay or in the circuit diagram according to the task required.
Содержание easy500, easy700
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