Execution of operator input. Termination of a command sequence on the screen of the operation unit by means of the execute character ”;”. Certain function keys already contain this execute character in their command sequence. – F1 bis F9 Function keys to trigger functions specific to the operation. These keys trigger single or cyclic processing of blocks and block sequences. The function keys as well as the blocks or block sequences are defined in the function block FUTA. ”FT,1;” to ”FT,9;” are sent as the key codes. The execute character is thus already included. An extension using key group 2 is possible if the function keys are insufficient (see next Section)
Variable Keys (Key Group 2)
The variable keys have the meaning of the corresponding key label displayed in the LCD above them. The keys are labelled according to the basic status when one of the BR or GP keys is pressed:The basic status is reestablished when the TE key is pressed again unless further system–specific blocks are present. The key labels are transferred from the AS to the keyboard. A key is blocked if it is not labelled. The assignment of the first block to key 1 can be selected with AS 235 (cf.GB.ORPA.40) . Yet the output sequence of the blocks cannot be modified via GB.ORPA.40 . The display of a block type can be suppressed on the PBT in an operator position–related manner if the respective parameter is set to 0 in the FB.ORPA (cf. Chap. 4.1)
Using the maintenance block SYST.WART
(menu item “Type presetting on the PBT”), the output sequence of the type names on the PBT can be freely selected for each operator position separately (cf. Chap. 9). The keys of key group 2 can be used to select the individual loop display if the respective loop display No. is added using the keys of key group 3. The BE key must first be pressed if an operation is to be carried out on the selected loop.The label of the key group 2 then changes according to the label in the loop display of the selected loop (M,R, etc.). See Chapter 9 for further details on the respective block labels.
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