Title: +038=360.000-OU045T_03-PCD2.m4160 PLS SBC - Hardware Manual.pdf
Because of the input filters and the effect of the cycle time, the digital input modules are not suitable for immediate reaction to events or for rapid counting processes. When a positive edge is detected at the user input, an associated XOB is called (e.g. XOB 20). The code in this XOB defines how the unit should react to the event. The code in the XOB called from the user input must be kept as brief as possible to allow enough time between the interrupts to process the rest of the user program. Many FBoxes are intended for cyclic invocation and so not suitable for use in XOBs, or only in a limited way. Exception: the FBoxes in the Graftec family (standard library) are well suited33.17.2 PCD2.M5_ 24 VDC interrupt inputsThe interrupt inputs (also called user inputs) are located on the motherboard and can be connected via a 10-pole, plug-in terminal block (X6 - terminals 30 to 39). Source operation is always used.Pin39 38 37 36 35 34 33 32InputsIX0 IX1 IX2 IX3 IX4* IX5*