Xybernetics ABB 800xA : CPU Utilization

Short and simple question… how to determine the how busy is the INNPM card through 800xA?

Short and simple answer… See image below.

Xybernetics ABB 800xA : Controlway Network Bandwidth Usage

Note that NPM card is a communication card and the highlighted number above (“CIU Utilization (%)”) is an index that tells you how busy the Controlway network is. Controlway is the ABB inter-CPU communication “highway”.

Xybernetics ABB 800xA : Controlway Network Bandwidth Usage

The driving factor for “CIU Utilization (%)” the “Sig Change (% Of Span)” in AO\L function block (Analog Exception Report function block), the minimum and maximum report time for all exception reports in the Segment Control function block.

The “Sig Change (% of span)” in the AO/L function block will allow the DCS to generate exception to acquire values if the new read value exceeds the specificed “Sig Change”.

Xybernetics ABB 800xA : Controlway Network Bandwidth Usage

The minimum exception report time (Min Xrp Time) for all exception reports in the Segment Control function block caps/reduces exception reports (acquire value from field I/O). If S7 in the Segment Control function block is set to 1, it means that the if there is multiple change in values within that 1 sec, it will not be read from the I/O.
The maximum exception report time (Max Xrp Time) for all exception reports in the Segment Control function block, is used to specify the next duration the field I/O should be read if there value has not yet changed. For example like in cases where RTD showing steady values.

Xybernetics ABB 800xA : Controlway Network Bandwidth Usage