Functional description and allocation of terminal pins Manual BG41/BG42/BG43
3-58 Rev. 99/49
3.2.9.5.7 FB56 (MIN/MAX), determinig the min. and max. values
With this data handling block FB56 (MIN/MAX) a minimum and a maximum value can be
determined for one input/output or for all inputs/outputs.
The following parameters are to be transferred when loading FB56:
Des. Format Explanation
ADR KF Peripheral base address of the building
block
K/OU KY Number of channels / analogue input
MIN W Minimum value
MAX W Maximum value
FEHL BY Error byte
Tab. 3-14: List of parameters for the loading of FB56
The following details are necessary for the abovementioned parameters:
ADR
(absolut)
Input of the peripheral address, under which the building block can be controlled
by the PLC. This address can be set with the DIL switches S1 and S2.
Further details can be found in chapter 5.
K/OU
K: Number of channels to which the module is connected (1-3).
EI: Number of analogue outputs or inputs (1-9)
At 9 the VALUE for all of the module’s outputs or inputs are set.
MIN
Flag word, in which the minimum value is filed.
MAX
Flag word, in which the maximum value is filed.
FEHL
This byte has a value of 0, if functioning correctly. In the case of a malfunction an
error code is entered. The error is acknowledged automatically, i.e. the byte is
reset to 0 once the cause of the error has been eliminated.
1 Building block not ready
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