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ifm
Programming Manual BasicDisplay CR0452 v03.02
05 / 2018
ifm function elements
ifm function elements for the device CR0452
>
Parameters of the inputs
3302
Parameter
Data type
Description
ENABLE
BOOL
TRUE:
execute this function element
FALSE:
unit is not executed
> Function block inputs are not active
> Function block outputs are not specified
TEXT_UP
BOOL
edge FALSE
TRUE: read next text
TEXT_DOWN
BOOL
edge FALSE
TRUE: read previous text
TEXT_MIN
WORD
lower limit for MESSAGE_NO
TEXT_MAX
WORD
upper limit for MESSAGE_NO
TEXT_LENGTH
BYTE
text length
MESSAGE_NO
WORD
text number
NULL_TERMINATE
BOOL
TRUE:
string has null termination
FALSE:
string has no null termination
>
Parameters of the outputs
15596
Parameter
Data type
Description
READ
BOOL
Read command
► Set this signal to the input ENABLE of the FB
FLASH_READ!
START_ADR
WORD
Calculated start address
► Set this signal to the input SCR of the FB
FLASH_READ!
ACTIV
BOOL
TRUE:
FB is active (if input ENABLE = 1)
ACT_MESSAGE_NO
WORD
Current text number