2-4. Operating Techniques Using Display and Keyboard - Continued.
h. STEP Key. STEP key is used in all display routines to advance (step) through the message displays.
When using a routine to change data in an existing configuration, the STEP key is used to quickly advance
through the message displays before and after the messages that are to be changed. After data is changed
in any entry point in a multiple-entry message, the STEP key can be used to advance the message
Example: Assume you want to make a change to an existing configuration. You would select the routine
and use the STEP key to advance through the routine until you reach the message where
you want to make the change. Assume you want to change the rate of port 1 in the below
message. You would enter the new rate (number keys and ENTR key pressed) and prompt
would move to port 2. You can now press STEP key and display will advance to next message.
Otherwise, ENTR key would have to be pressed for each entry point to reach next message.
i. BACK Key. BACK key is only active when a configuration routine is performed and a multiple-entry
message is displayed. The BACK key allows the operator to change any completed entry point in the
message prior to completing the last entry point in the message.
Example: Assume you had entered message up to port 5 as shown in below message and then decided
that entry at port 3 needed to be changed. Pressing BACK key would return prompt to port
1. Pressing ENTR key twice would move prompt to port 3. Then CLR key is pressed to erase
old data ("8"). New data is entered at port 3 by pressing numbered keys and ENTR key and
prompt moves to port 4. Pressing ENTR key again would move prompt to port 5 and normal
message entry could continue.