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LD Language Elements
112
SR2MAN01 11/2007
Reset Initial Counter State input:
Symbol of the Reset Initial Counter State Input coil:
When used as a coil in a control diagram, this element represents an input that
resets the counting function to its initial state.
Energizing the coil has the following effect:
z Reset the current count value to zero if the count type is TO (up-counting from
the preset value),
z Reset the current value to the preset value if the count type is FROM (down-
counting from the preset value).
Example:
Counter no. 1 reset to zero by pressing Z1 key.
Every time key Z1 is pressed, the counter starts from 0.
Counting direction input:
Symbol of the Counting Direction Input coil of a timer:
This input determines the counting direction according to its status. It:
z Downcounts if the coil is energized,
z Upcounts if the coil is not energized.
Example: Up/downcounts, depending on the status of smart relay input I2.
If the I2 input is active, the automation function downcounts.
Note: By default, if this input is not wired, the automation function counts.
RC-
Z1 RC1
DC-
I2 DC1