Applies To:
  • CitectSCADA 1.00, 1.01, 1.10, 1.11, 1.20, 2.00, 2.01

Question: What is the size of the keyboard buffer in Citect? 

The Citect raw keyboard buffer is 32 characters in length. Citect also has a keyboard echo buffer that is 64 characters in length. This buffer is used to echo the keys to the screen. The buffer is larger as keys with tags require more space to display. For example, the ⁢enter> key will take 1 character in the raw keyboard buffer while it will take 5 characters in the echo buffer to display the 'ENTER' string. When the echo buffer overflows, the display will truncate to the 64 characters maximum but if there is space in the raw keyboard buffer, the character will still be accepted. If the raw keyboard buffer overflows, the keyboard input will ignored.

If you require longer keyboard input, use the Input() function or the form functions to display a dialog to get the input.