Functional description and allocation of terminal pins Manual BG41/BG42/BG43
3-52 Rev. 99/49
NKAN
Number of channels, which should be polled by the firmware. The channels must
be occupied in ascending order. Valid numbers are 1-8. This parameter gives the
end value of the channels to be polled. The channels 1 up to this value are always
polled.
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.
3.2.9.5.2 FB51 (MODE), mode selection
The data handling block FB51 (MODE) offers the possibility of inputting an offset and for selecting
a mode for an input/output or for all inputs/outputs.
It is useful, to load the FB 51 (MODE) at the new start or restart (OB 20 ... 22). Fb51 is to be loaded
for each channel.
The following parameters are to be transferred when loading FB51:
Des. Format Explanation
ADR KF Peripheral base address of the building
block
KANR KF Number of channels
INOU KF Input/output number 1-8, 9
MODE KM Mode
OFFS KF Offset of outputs/inputs
FEHL BY Error byte
Tab. 3-9: List of parameters for the loading of FB51
The following details are necessary for the abovementioned parameters:
ADR
(peripher)
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.
KANR
Number of channels, to which the module is connected. The used channel number
is dependant upon the interface:
Building block BG41 Channel number 1
Building block BG42 Channel number 1, 2
Building block BG43 Channel number 1, 2, 3
INOU
Analogue input or output (1-8). If 9 is entered here, then the values apply for all
inputs or outputs of the module.
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