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2.1.2 Keypads Arrangement

The keypads of FP-07 console is functionally divided into four groups:

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Mode keys: Four mode keys, , are used for selecting operation mode of FP-07.

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Control keys: Control keys are used for mode operations (all the blue keys on FP-07 except mode keys).

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Instruction keys: Instruction keys are used for entering FB-PLC instructions with parameters or data. All the black keys in the top two rows and the two keys, at the fourth row of FP-07 (refer to the description of special keys below) are the instruction keys.

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In order to obtain optimum convenience and maximum input capability under a limited number of available keys, four groups of keys are designed as multi-purpose as described below:

a. Alternation keys: Alternation keys are those with a horizontal line marked in the middle to separate two distinct functions (a total of six keys, ). By pressing the key ( as an example) for the first time, the function above the horizontal line (RUN) will be displayed on the LCD display unit. By pressing the key again, the function below the horizontal line (STOP) will be displayed. If the key is pressed for the third time, the LCD screen will display the function above the horizontal line (RUN) again. The process will repeat if the key is pressed repeatedly. By pressing (at the lower rightmost corner of the keypads), the function last shown on the LCD screen will take effect.

b. Shift Key: After pressing this orange key (at the lower leftmost corner of the keypads), an S letter will first appear on the LCD display unit. If now any key at the upper rightmost corner with a small orange letter printed is pressed, the small orange letter (the “shift key letter”) will be entered or the function described by the orange letter (such as or ) will be executed and the letter S on the LCD will disappear.

c. Compound keys: There are two rows of white letters on each of the four keys,

d. Double-definition keys: Two keys, and , represent Timer and Counter, respectively and also the letters T and C. Similar to the compound keys, the two functions cannot be operated simultaneously. FP-07 will make necessary judgment itself automatically.

Remark 1: Pressing two or more keys at the same time is prohibited while operating the FP-07 programming panel. For

Parameter keys: Parameter keys are used for entering the operand’s numbers or contents. All black keys, except instruction keys, are parameter keys., those are neither shift keys nor alternation keys but keys that can perform the two functions represented by the two rows of white letters. Under special arrangement when one of these keys is pressed, FP-07 will carry out the function described by either the upper or the lower row in accordance with the current operation mode automatically without any further instruction given by the user.