Mcgs Hmi Password Work -

Let us create a functional password gate for a maintenance screen.

You need a way for operators to enter credentials. Do not build a generic text box; use the system function:

When operators ask "how does the MCGS HMI password work," they are usually referring to one of three distinct mechanisms: mcgs hmi password work

This article focuses primarily on Runtime User Access Passwords, because that is where 90% of customization happens.

You can create a password popup:

Example script (button click):

IF Pwd_Input = Sys_Pwd THEN
  !SetDevice(DeviceName, Cmd, Value)  ' unlock function
  Pwd_Input = 0
ELSE
  MessageBox("Wrong password")
ENDIF

Store passwords in internal variables or user database. Let us create a functional password gate for

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Click Download → Run Simulate. Enter 1234. The macro runs, sets Login_Flag=1, and redirects you to the protected screen.

Every object (button, input box, etc.) in MCGS can be assigned a "Security Level" (often ranging from 0 to 99, or specific groupings depending on the version). This article focuses primarily on Runtime User Access

When you implement the above, here is what happens inside the MCGS processor:

A password like 0123 is interpreted as 123 (integer). If your stored password is 123, it will match, but an operator entering 0123 will see 123 in the numeric display. Train users or use string variables.