Publication 1756-RM084F-EN-P - July 2002
7-10 Entering Sequential Function Chart Logic
Where:
Item: Identifies:
ID
the step identifier. This ID uniquely identifies this step from all other blocks. Enter an
unsigned, 32-bit integer value.
Specify:
ID :=
number
X
x-coordinate on internal grid. Enter an unsigned, 32-bit integer value.
Specify:
X :=
number
Y
y-coordinate on internal grid. Enter an unsigned, 32-bit integer value.
Specify:
Y :=
number
Operand
the step tag. Enter a tag of datatype SFC_STEP. The import process uses this tag name to
name the step.
Specify:
Operand :=
tag
HideDescription
whether or not to hide the step description. Enter Yes or No.
Specify: HideDescription :=
text
DescriptionX
x-coordinate on internal grid of the description box. Enter an unsigned, 32-bit integer
value.
Specify:
DescriptionX :=
number
DescriptionY
y-coordinate on internal grid of the description box. Enter unsigned, 32-bit integer value.
Specify:
DescriptionY :=
number
DescriptionWidth
this attribute is not currently used; it is there for future use. Enter 0.
Specify:
DescriptionWidth := 0
InitialStep
whether this step is the initial step of the routine. Enter Yes or No.
If you have multiple steps identified as the initial step (this is incorrect syntax), the import
process designates the last initial step it encounters as the initial step and removes the
initial step indicators from any other steps.
Specify: InitialStep :=
text
PresetUsesExpression
whether the preset for the step timer is a structured text expression. Enter Yes if you plan
to enter an expression in a PRESET block, otherwise, enter No.
Specify: PresetUsesExpression :=
text
LimitHighUsesExpression
whether the preset for the limit high alarm is a structured text expression. Enter Yes if you
plan to enter an expression in a LIMIT_HIGH block, otherwise, enter No.
Specify: LimitHighUsesExpression :=
text
LimitLowUsesExpression
whether the preset for the limit low alarm is a structured text expression. Enter Yes if you
plan to enter an expression in a LIMIT_LOW block, otherwise, enter No.
Specify: LimitLowUsesExpression :=
text
ShowActions
whether to show or hide the step’s actions. Enter Yes or No.
Specify: ShowActions :=
text
PRESET_block
a structured text expression that specifies the preset time in milliseconds for the
step timer. If the PresetUsesExpression attribute (above) is Yes, enter a PRESET block.
see page 7-11
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