Posted 5 Apr 2016 Hi, I am a bit rusty on PCS7. We have a nuisance alarm and I am struggling to identify the input. S7Prog/@(6)/4_AO_HART_3 Module 1/9/14 I think the clue is in the module addreess. What do the 3 numbers (1, 9, 14,) refer to Share this post Link to post Share on other sites