Hysteresis unit

Job Name

Required field. Assign a unique name for the job. The name must not contain more than 15 characters.

Gate Group Addresses

By Gate Group Addresses job will be released or blocked. The release object releases or locks the job. It is about an EIS1 object:

• Field blank = Job is released.

• Field completed, value 1 = Job released.

• Field completed, value 0 = job locked.

• Field completed, no value = job locked.

As soon as one address is filled in, release will behave respective to the value of the group address. If no value was sent to the address and the address is presently without values, job will be blocked.

Element Hysteresis is a comparator with two thresholds. The two thresholds were called as one upper threshold and one lower threshold. If input receives a value, this value will be compared with the thresholds and result will be send in form of a binary value (0 or 1) EIS 1. Depending on the last calculated state, the new state will be calculated according to following definition:

If last result of calculation is 0, the output object will alter to 1, in case the received input value will exceed upper threshold. If the last result of calculation is 1, the output object will alter to 0, in case received input value will fall below lower threshold. Input value could only be received by the input object. Upper and lower threshold can be described by a constant or by an object.

Calculation of hysteresis switch will start, if input object or object of threshold will receive one telegram. Parameterized type of EIB defines how hysteresis switch will calculate the value.

If entering in type of EIS “nothingness”, so the “constant“ will be used for the value.

If you parameterize EIS type 1, 2, 3, 4, 6, 8, 10 or 11, so value of object will be determined over factor and offset, that implies that received object value of EIB will be multiplied by the factor. Value of offset will be added. Result of this calculation is the object value, which will be used for calculation of hysteresis switch.

After computation by min/max value, calculated object value will be forced to a valid array of the threshold switch in this way. That means that min/max value formed a limitation of variable thresholds, which will be sent with the help of related object value.

In case object value falls below min value, so object value will be the min value. In case object value will rise above max value, so object value will be the max value. Plausibility check will not be performed by calculation of the gate.

With the help of so obtained values for input, lower and upper threshold, actual state of output will be calculated.

By calculation two cases were differentiated: Output state 0 or 1.

• If state 0 was output status, before activating telegram will be received, the input value has to be above the upper threshold, as to obtain 1 for the new output value.

• If state 1 was output status, the input value has to be under lower threshold, as to obtain 0 for the new output value.

In case the calculation forces, a change of state at the jobs’ output a telegram will be sent out. If there was no change of state at the a telegram will be sent out only when the parameter “send only changes“ is not set.

If parameter “send only changes” has been activated, so a telegram will be sent out from output, only when calculation will cause a change of state on output. In case this flag is not activated, so a telegram will be sending out after every recalculation.