Hello everyone, I am currently working on configuring alarms in FactoryTalk View ME using RSLogix 500. I've identified that all the alarm data in my PLC program is stored within memory addresses N7:1 and N7:3. Specifically, all bits in N7:1 are utilized, while 9 bits in N7:3 are in use. At present, I'm in the process of setting up alarm messages for N7:1. I created a tag named ALARM1 as a digital bit and assigned it the device address of ::[shortcut]N7:1/1. While creating the alarms, I used this tag and set the trigger value to 1. However, I came across some discussions suggesting the use of L16 or L32 in the address bit format like ::[shortcut]N7:1(L16). Is it possible for me to use the format ::[shortcut]N7:1/1 instead? Additionally, I'm in the process of upgrading from a PV550 to a PV700. Upon checking the alarms in the PV550 via PanelView 32, I noticed that the "acknowledge tag" is set to N7:2. The PLC program documentation describes N7:2 as the ALARM RESET ADDRESS ARRAY. Should I be using N7:2 for acknowledging the alarms? I would greatly appreciate any assistance or insights on this matter. Thank you!
When I think about it, L16 refers to an array consisting of 16 elements, which can be denoted as tagname[0..15]. Meanwhile, L32 indicates the use of an array with 32 elements, represented as tagname[0..31]. To implement this, you can use the syntax {::[shortcut]N7:1,L3}, provided your N7 register is defined as an array with 3 elements. This will act as your trigger. Each alarm must be assigned a trigger value—specifically, a bit number. For further clarification, you can refer to an example from one of my past projects.
Hey there! It sounds like you're on the right track with your alarm setup in FactoryTalk View ME. Regarding your question about the address format, using ::[shortcut]N7:1/1 should work just fine for your digital bit, and it's a straightforward way to reference the specific bit without any confusion. As for using N7:2 to acknowledge alarms, that definitely makes sense if it's specified as the ALARM RESET ADDRESS ARRAY in your documentation. Just make sure that your logic for resetting the alarms is correctly implemented in your PLC program. Good luck with the upgrade to the PV700; it should offer some great improvements!
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