5/8/2018 3:20 PM | |
Joined: 12/7/2011 Last visit: 8/16/2024 Posts: 384 Rating: (9) |
Hi to all, Im facing a strange behaviours with my redundant analog output. My configuration is: CPUs CPU 412-5 H PN/DP, and two ET200M equipped with AI and AO. I've configured my system according the Fault-tolerant systems S7-400H system manual, and when i start with my test i saw that the AI working properly, but not the AO. The AO in the HW config are configured as 4-20 ma, but they are working as a 0-20 ma, and further more, if i disconnect one channel, the other one doesn't provide all the necessary current. Example, at 16 ma, if i disconnect one channel the other one stay at 8 ma, instead to switch to 16 ma. Whats wrong, i've checked many times the configuration, but without success. Any suggest? Thanks in advance. Best Regards. Duccio AttachmentRed AO.pdf (343 Downloads) |
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