MMS variable access panel builder 6.0 PC mode
I have a failed HMI panel is build by Stahl panel to commuication to AC800M using MMS communications , I am going to replace the Stahl HMI panel to ABB panel 800 series , I have the variable list for the MMS , but I don't have the souce code for the PLC, right now I try to use panel builder 6.0 configure a PC HMI try to connect the AC800m to see if the MMS variables are updating , but all variables seems only displays 0 , not sure what is wrong , is the MMS vesion should be same on panel builder and PLC side ? Right now it is MMS 4.1 on AC800M side I believe . Do I need a panel builder 4.0 ? Or anything else need to check ? There is no communication alarm , but variables not updating it's value .
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