Operating Manual SSI-BOX PROFIBUS-DP (PNO)
ELECTRONIC GmbH
TR - ELECTRONIC GmbH,
Global Quality Management, Eglishalde 6, 78647 Trossingen, Tel. ++49 (0)7425-228-0, Fax ++49 (0)7425-228-33
Date: 25.04.2012
TR - E - BA - GB - 0013 - 03
Page 40 of 45
4.4.3.7 Preset 2 value [units] hi and preset 2 value [units] lo
This parameter define the position value to which the SSI-BOX is adjusted with the
leading edge of the 2nd preset input.
Inputs for HI word
Lower limit
0
Upper limit
512
Inputs for LO word
Lower limit
0
Upper limit
65536
Warning
To execute a preset the preset-inputs of the SSI-BOX have to be used.
Possible available preset-inputs of the encoder may not be used to set the position.
Notes for the input of parameters with data format 32 bits
The Profibus standard DIN 19245 provides the data format "UNSIGNED32" for the
definition of 32 bits of parameter data in the device master file. This data format isn't
supported by all configuration programs for profibus master. These programs clip the
more significant word of the parameter. In order to allow inputs despite this, these
parameters are split up into single words.
Illogically enough, the input in the input masks also has to be made in decimal form.
This affects the following parameters:
Total measuring range [units]
Preset 1 value
Preset 2 value
In the meantime, we recommend the following procedure for entering measuring
lengths in increments larger than 16 bits:
1. Convert the desired measuring length in increments to a hexadecimal figure using
a calculator and store this figure.
2. Convert only the four less significant tetrads (figures) back to decimal format
separately. This gives you the input 'Total measuring range [units] lo'
3. Convert only the remaining more significant tetrads (figures) back to decimal
format separately. This gives you the input 'Total measuring range [units] hi'
Example:
Total measuring length in increments:
10 500 000 (D)
converted to hexadecimals:
A0 37A0 (H)
results in four less significant tetrads:
37A0 (H)
and remaining more significant tetrads:
A0 (H)
Total measuring range [units] lo:
14240 (D)
(=37A0 (H) !)
Total measuring range [units] hi:
160 (D)
(=A0 (H) !)
i
