Software 4.1.1.4 Influence of communication on the cycle time Both programming and testing online in the KUBES envi- ronment and man-machine communication with operating terminals demand data exchange via the V.24 port. this communication is interrupt-controlled and can extend the cycle time by up to 10%, given a transfer rate of 9600 baud. Status information In certain intervals, KUBES requests information from the controller even if there is no actual communication: Frequency: every 5 s Delay: 1 ms Dynamic displays The single address and address range displays, the logic diagram or the dynamic display in the Module Editor allow you to permanently read and display up to 256 operands.
You can reduce the resulting time load by either loading fewer program lines into the Module Editor or by using the single address instead of the address range display Examples Ш The dynamic display of 224 byte (14 lines with C1T16 SMxx.xx) in the Module Editor can extend a pro- gram cycle of 2 ms by another 2 ms (worst case). Ш Having the address range display dynamically rea- ding a complete marker range extends the cycle time by c. 0.5 ms. 40