E3-plus DeviceNet values

[Conor 4]

Hi guys, We have put a new E3-Plus overload onto one of our DeviceNet networks, it is on a PLC 5. We set up 4 words fine. We are wondering how we can change what parameters are coming into the first word. From the manual we have read that parameters 60, 61, 62 and 63 are used for reading from the device. Parameter 60 is set to 100, and therefore we are reading the currents from L1 - L3 on parameters 61 - 3. If we change parameter 60 to 114 will this change the first word to read as per page B-23 in the manual? And if we do this will the other parameters 61 - 3 change? We are just slightly confused reading the manual Thanks, Conor

[Ken Roach 194]

I'm not sure where you're getting Assembly 114 from; my User Manual doesn't include that assembly number (though there is an Assembly 141), but my Appendix B pages are also numbered differently so we might not be looking at the same Publication (193-UM002H, June 2011). In general, I leave Parameter 60 (Input Assembly) set for 100, which means the parameter pointers in Parameters 61, 62, 63, 64 will point to Monitoring parameters I want to read. By default, these monitoring parameters are Parameter 21, 1, 2, and 3. (Device Status, and Phase A,B,C Current in Amperes). I prefer to change that: Parameter 60 = 100 (Configurable Assembly) Parameter 61 = 21 (Device Status) Parameter 62 = 15 (Warning Status) Parameter 63 = 9 (% Thermal Utilization) Parameter 64 = 4 (Average Current) Because the Device Status will tell me if there's a Trip, I can then use Explicit Messaging to grab the Trip Status and the Trip Log, because there's no hurry for that. I want to know about Amperes, %TCU, and any Warnings in real time.

[Conor 4]

Hi Ken, Thanks for your reply. I will check the publication number tomorrow. I am sorry, but when I re-read my post today it was all over the place. Basically, parameter 61 looks at 21. Can I change that to another parameter? Also does it matter I I change parameter 62 to 4 (ave current) instead of 1 Thanks again, Conor

[Ken Roach 194]

Parameters 61, 62, 63, 64 can point to any Monitoring parameter (1-21). You might be able to try other Configuration parameters, but I've never used these for anything outside the Monitoring group. It doesn't matter what parameters or what order they're put into; The default is [21, 1, 2, 3] but you can use [14, 15, 21, 4] or anything else. Be aware that if the E3 encounters a zero in those parameters it will truncate the Input Assembly after the last valid parameter. [21, 1, 2, 0] will give you 3x 16-bit Words, but [21, 0, 1, 2] will give you just 1x 16-bit Word. Unless you are short on Scanner memory, don't make a smaller-than-4-Word Input Assembly.

[Conor 4]

Thanks again Ken