Chris Edwards

Morning all, On Friday one of our PLC's fell over and it has reverted back to an IP address not related to our control network. One of the connected PLCs now provide us with an error saying CPU Error Detected. The device in question has been rebooted and defaulted back to 169.254.100.1. No software changes have been pushed to this device for quite sometime. Any input would be appreciated it. Thanks Chris

Thanks all for the feedback. Can somebody give me a rough idea of what a UniStream 7" PLC+HMI cost? Thanks Chris

Hi, Just a brief background to myself; I've been an on/off programmer for more than 20 years but now focusing on general IT support. I've been asked by one of my clients to get involved in creating automation systems for one of their ventures. Currently a previous employee at this company had implemented UniLogic products into the general network which I though was best to kept and standardize on. My question is though; we have a project to move high pressure water from 4 kms below ground to the surface, while detecting levels of methane within that water. Now I'm a complete novice with PLC's in general I'm hoping somebody could give me a high-level insight to what would be required to get this project to completion. My basic understanding is that the UniLogics UniStream (PLC+HMI built in) would accept data from a methane detector and process that data, accordingly, i.e. push it to a data collection server etc. The Unilogic device would also have the ability to send commands to a water valve to either open or close either by human interaction via the HMI or code being evaluated within the PLC project that is pushed to it. Where my knowledge gets a little hazy is how the PLC+HMI and these 3rd party devices are connected? Do I need to be looking for 3rd party devices, i.e. methane detector, that have RJ45 Modbus connectors? Sadly, I don't a have UniLogics controller to play with so I'm resorting having to go through YouTube and other online material and it's a serious mountain to climb So, I'm hoping somebody would be patient enough to give me a guiding hand. Thanks, Chris