Operator Interface of EZSeries TextPLC has the capability of storing and displaying upto a total of 256 messages. The message can be a Local message which the operator may scroll through to view the Machine/PLC data or the message can be a PLC message triggered by the PLC to show for example an alarm condition.PLC Messages always override the Local messages when PLC triggers a message. All these messages can have upto three variables referencing PLC memory locations. Each line of the Text panel can have its own message. Thus, all of the EZ Text family panels have the capability of displaying upto 768 varaibles.
Loacal Messages:
Local messages are created within a folder / subfolder type hierarchy. These messages can contain up to Three Embedded variables which will reference memory locations inside the PLC. During normal operation Operator can scroll, view or enter a new values into embedded variables located inside the message through control Pushbuttons or Numeric keypad.
PLC Messages:
"PLC Type" messages are controlled by a single word memory location of a PLC. These messages have the highest priority and they overwrite any Local messages that might exist on a Text panel at any given time. When these messages are entered in the EZ Text software, They are assigned a specific number by which they are referenced and archived. When the word memoey location dedicated for PLC Type messages points to a specific message number, the message corresponding to that number is displayed on the panel.

The enhanced messaging capability of the Text panels make them high value HMIs at the prices they are sold at.