Title: +038=360.000-OU045T_03-PCD2.m4160 PLS SBC - Hardware Manual.pdf
The core of the software watchdog is the instruction SYSWR K 1000. When this is first issued, the software watchdog function is activated. This instruction must then be issued at least every 200 ms, or the watchdog will trigger and restart the controller.Hardware Manual for the PCD2.M5 Series│Document 26/856; Version EN 09│2012-01-253-48Saia-Burgess Controls Ltd.PCD2.M5_ Classic CPUs and expansion housingsSoftware watchdogInstruction:SYSWRK 1000; Software watchdog instructionR/K x; Parameters as per table below ; K constant or value in ; registerx = 0The software watchdog is deactivatedx = 1x = 2The software watchdog is activated; if the instruction is not repeated within 200 ms, there will be a cold start The software watchdog is activated; if the instruction is not repeated within 200 ms, XOB 0 will be called and then there will be a cold start XOB 0 calls are entered in the PCD history as follows: "XOB 0 WDOG START"