novice_user111
Member
Hello, I am working on a project using an AB Micro850 PLC in combination with a PanelView800 series 2711R-T4T HMI panel. I was previously using a switch to connect both of them to my PC, with the intention of eventually just leaving a single Ethernet connection directly between the two devices.
It was working fine up until some sort of strange failure caused the HMI to no longer be able to connect to either the switch or the PLC directly, even though I am still able to connect to it from the PC using the exact same IP settings as before. Neither the switch nor the PLC's ethernet ports show any activity indication when connected to the HMI, while the HMI's port is slowly flashing both its LED's on and off. I should add that both the PLC and the switch are perfectly functional, I can connect to the PLC over the switch no problem.
Could this be symptomatic of some sort of physical failure in the HMI? The issue persists even after doing a full reset, trying every cable-port combination and loading various different projects or even none at all.
It was working fine up until some sort of strange failure caused the HMI to no longer be able to connect to either the switch or the PLC directly, even though I am still able to connect to it from the PC using the exact same IP settings as before. Neither the switch nor the PLC's ethernet ports show any activity indication when connected to the HMI, while the HMI's port is slowly flashing both its LED's on and off. I should add that both the PLC and the switch are perfectly functional, I can connect to the PLC over the switch no problem.
Could this be symptomatic of some sort of physical failure in the HMI? The issue persists even after doing a full reset, trying every cable-port combination and loading various different projects or even none at all.