S5-95U onboard counter

11.5 Cascading Counters (with the S5-95U only)

Instead of using counter A and counter B individually and independently of each other, you can

combine them (cascading).

Use cascading of counters if you want to count amounts larger than 65,535 (up to 4,294,967,295).

The registers of both counters work together like a larger counter with more digits. The maximum

counting frequency for the counter cascade is 5 kHz if no programmers, operator panels or SINEC

L1/L2 are connected.

If you cascade counters, counter input B is automatically disabled; therefore, you must connect the

incoming pulses to counter input A. Section 3.3.5 describes how to connect a pulse generator to

counter input A.

Hi,

actually the counter does continuecount forwards
You see the value getting negative, while you see the value in "16bit with sign" representation.

If you would display it in "16bit without sign"you would see the countervaluecorrect.

Regards.