5−22 Electric Drives
and Controls
Bosch Rexroth AG RhoMotion 1070072367 / 04
CAN-Bus peripheral equipment
5.5.4 Analog I/O parameter
The 400 group of machine parameters is used to define the number of
analog I/O channels and their configuration.
Number of der analog inputs (P406)
P406 indicates the number of the analog input channels. Per input block
there are 4 analog input channels to be set.
assignment of the analog input channels (P407)
In P407 the following is to be entered:
D assignment:
BAPS channel numbers are allowed from 201 to 299. The adjusted
channel number must be used in the BAPS program for the declara-
tion of the analog input of type REAL.
Example
input REAL: 201 = ANA_In_1
D RAM initial address:
This relative address indicates the position of the 2-byte data word for
the analog channel within the rho4 internal RAM area. For Inputs and
Outputs there are 2 separate physical RAM-Areas.
The setting is to be performed as follows:
RAM-BegAdr ANA-input 1: 0
RAM-BegAdr ANA-input 2: 2
RAM-BegAdr ANA-input 3: 4
RAM-BegAdr ANA-input 4: 6
RAM-BegAdr ANA-input n: (n−1) * 2
D Format:
For the data format, a numerical representation in 2’s complement
(positive and negative decimal numbers: Format = 0 ) or a straight
binary representation (only positive decimal numbers: Format = 1 )
can be selected.
D Nominal value:
The nominal value is a number that corresponds to the highest input
value that can be represented with 2 bytes. This means the specified
nominal value is obtained in the BAPS program by reading an analog
input that provides the maximum possible analog input value.
D For a nominal value of 1000 and a measuring range of ±10 V, an
input value of 1000 is obtained in the BAPS program for an applied
voltage of +10V, provided that left-aligned representation and For-
mat=0 are selected.
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