Index And Reference Point Logic; Hardware Trigger - Addi-Data MSX-E1701 Technical Description

Function description: Incremental counter inputs
b) Modulo mode
In Modulo mode, a reference value is indicated as well. When the counter value corresponds to the
reference value or a multiple of it, a trigger or synchro trigger is released.

3.8 Index and reference point logic

The index signal of an incremental encoder can be used either for latching or latching and deleting the
counter value.
You can select if the rising edge, the falling edge or both edges of the index signal should be counted.
Depending on the mode, the counter value is latched only once or endlessly after each defined edge.
Examples
a) Index logic with falling edge in continuous mode
In addition to the index logic, the reference point logic can be activated.
In this case, the defined edge of the index signal is counted only after a falling edge of the external
reference signal. Further relevant edges of the index signal are not taken into account until the next
falling edge of the reference signal has been counted.
b) Index logic with rising edge in continuous mode and reference point logic with falling edge

3.9 Hardware trigger

The digital 24 V trigger input of the MSX-E system can be used to latch the incremental counter value.
You can select if the rising edge, the falling edge or both edges of the trigger signal generated
externally should count. By means of the counter, you can define after which number of edges the
incremental counter value is to be latched.
Examples:
•
Selected edge: rising
Counter value: 1
The incremental counter value is latched after every rising edge of the trigger signal.
•
Selected edge: rising
Counter value: 3
The incremental counter value is latched after every third rising edge of the trigger signal.
•
Selected edge: rising and falling
Counter value: 3
The incremental counter value is latched after every third edge of the trigger signal.
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MSX-E1701