ML1500

[mhowasso 5]

Hi All, On a ML1400 Analog Module 1762-IF4 there is a bit for "Open Channel" that goes high if the wire is cut. I think the following bits are used. Channel 0 is bit 95 Channel 1 is bit 93 Channel 2 is bit 91 Channel 3 is bit 89 Is there similar bits for "Open Channel" used on a ML1500 1769-IF8...??? If so what are the bits..??? Thank you, Mark

[Mickey 71]

Your 1762-IF4 has over and under range flag bits, but I don't believe it has open channel flags. Someone correct me if I'm wrong. The 1769-IF8 has the same over and under range flag bits ( although different word/bit addresses). underrangeIF8.pdf Edited 2 Apr 2014 by Mickey

[chantecler 15]

Channel 0 is bit 161 (10/1) Channel 1 is bit 165 (10/5) Channel 2 is bit 169 (10/9) Channel 3 is bit 173 (10/13) Channel 4 is bit 177 (11/1) Channel 5 is bit 181 (11/5) Channel 6 is bit 185 (11/9) Channel 7 is bit 189 (11/13) See: 1769-in067_-en-p.pdf Edited 2 Apr 2014 by chantecler

[mhowasso 5]

Thanks Chantecler... I just know on all my 1400 that on the 1762-IF4 module that if I monitor the channel bits and remove a wire that the bits mentioned above immediately go to a one. I was hoping that the 1769-IF8 had similar bits. If not I can always use a 1769-IF16C which has similar bits. Thanks again for the info I will try them. Mark Edited 3 Apr 2014 by mhowasso