Hello All,
I’m tackling an application where I need a user to enter a password on a Siemens OP270B display to login and gain supervisor privileges. The password MUST be hard coded in the PLC (where verification will take place). The trouble I have is that to have a password entered with this particular type of display it must be in STRING format. I need to send the password back to the PLC from the display and compare it to the password value in the PLC, but I cannot understand how to compare data of STRING type in Step 7. Does anyone have any ideas how I can achieve this?
Thanks Qee.
I’m tackling an application where I need a user to enter a password on a Siemens OP270B display to login and gain supervisor privileges. The password MUST be hard coded in the PLC (where verification will take place). The trouble I have is that to have a password entered with this particular type of display it must be in STRING format. I need to send the password back to the PLC from the display and compare it to the password value in the PLC, but I cannot understand how to compare data of STRING type in Step 7. Does anyone have any ideas how I can achieve this?
Thanks Qee.