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This command opens a request form and asks for user input of a value. A free text string to be displayed as form text must be passed on to the command. | ||||||
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This command must not be called in a conditional instruction. | ||||||
Syntax: |
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ask({VAR},{STR_EXPR}) | |||||||
I/O parameters:
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Return value: |
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Example: |
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Declaration of Variables | |||||||
10 ask(DOCU_FLOAT_1,"Please enter voltage [Volt]!") |
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Result: | |||||||
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DOCU_FLOAT_1 variable is defined with value input. | |||||||
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Other than "ask_mes" "ask" will always use the {STR_EXPR} string regardless of the active language. (No multiple language support!) | ||||||
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If a request form
with a Yes- and a No-button should appear, then as a first parameter a logic
variable has to be used. In the normal case the Yes-button will be supported. In order to support the No-button, the message text in T_MESSAGE can be expanded by adding [NO] separated by blanks! Example: 10 ask(EP_LOGIK, "This is my text [NO]") |
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Functions and commands: Input/Output |