FB_LOADSENSING

Description Function Block

The FB_LOADSENSING function block is used to check the AnalogInX and AnalogInY inputs to find out whether the AnalogInY values at the AnalogInX position are within a specific range. There is a (warning level) and a (switch-off level) for the AnalogInY values in the table.

If bInactive=FALSE, then the largest index is determined whose corresponding X value is still less than the AnalogInX input. Then a check is performed to find out whether the AnalogInY input is within the corresponding switch-off level (Y1, Y2) or within the warning level (WY1, WY2). If the value is within the switch-off level, then the bValid output is set. If the value is between the values Y1 and WY1 or Y2 and WY2, then the bWarning output is also set. There can be up to 25 indices.

The check can be reversed by means of the bOutsideY1Y2 input so that values outside of Y1 and Y2 are valid and the bValid output is set. In this case, the warning level has to be specified greater than the switch-off level.

ES6900

The FB_LOADSENSING function block is not supported by the EL6900.

Figure 23. Representation in the Library Manager

Figure 24. Representation in the FBD Editor

Table 46. VAR_INPUT

Name	Data Type	Initial Value	Description, Parameter Values
`bInactive`	`BOOL`	`FALSE`	Input for deactivating the FB
`AnalogInX`	`LINT`	`0`	Analog X value Permitted data types: `UINT`, `INT`, `UDINT`, `DINT`
`AnalogInY`	`LINT`	`0`	Analog Y value Permitted data types: `UINT`, `INT`, `UDINT`, `DINT`
`bOutsideY1Y2`	`SAFEBOOL`	`FALSE`	The data of the value table is checked according to the following formulas: `bOutsideY1Y2 = FALSE: Y1[index] <= WY1[index] < WY2[index] <= Y2[index]` `bOutsideY1Y2 = TRUE: WY1[index] <= Y1[index] < Y2[index] <= WY2[index]`
`ValueSettings`			Values for `X`, warning levels (`WY1`, `WY2`) and switch-off levels (`Y1`, `Y2`). : Opens a table where the values are defined. If values for `Y1` and `Y2` are specified in the table, then values for the warning level `WY1` and `WY2` must also be specified.

Table 47. VAR_OUTPUT

Name	Data Type	Initial Value	Description, Parameter Values
`bValid`	`SAFEBOOL`	`FALSE`	`TRUE`: `AnalogInY` is located within the switch-off level.
`bWarning`	`SAFEBOOL`	`FALSE`	`TRUE`: `AnalogInY` is located between the switch-off level and the warning level.