User Manual
E727T0005, valid for E-727
BRO, 2019-06-28
Physik Instrumente (PI) GmbH & Co. KG, Auf der Roemerstrasse 1, 76228 Karlsruhe, Germany
Page 91 / 240
Phone +49 721 4846-0, Fax +49 721 4846-1019, Email
INFORMATION
The analog input values must be scaled to suitable position values. See "Scaling the Analog Input"
(p. 87) for more information.
Make sure that the analog input line which is used to control an axis is not used as external sensor
for the same axis. This means that in the input matrix, the coefficient of the appropriate analog
input line must be set to zero for that axis.
The coefficients of the analog input lines are represented by the values of the
Position From
Sensor 4
to
Position From Sensor 7
parameters (IDs 0x07000503 to 0x07000506). In
PIMikroMove, these parameters are available in the
Axis Definition
parameter groups in the
Device Parameter Configuration
window.
Use as External Sensor Input
To let the sensor on the analog input line participate in the position signal of an axis, set the
corresponding coefficient in the input matrix to 1 for that axis. Example: With an E-727.3CDA, an
external sensor is connected to input signal channel 4 (pins 2 and 9 of
Analog I/O
). This sensor is to
be used to measure the position of axis 1, i.e. the
Position From Sensor 4
parameter (ID
0x07000503) must be set to 1 for axis 1. Send:
SPA 1 0x07000503 1
to change the coefficient in volatile memory. In PIMikroMove, this parameter is available in the
Axis Definition 1
parameter group in the
Device Parameter Configuration
window.
If only the external sensor on the analog input line is to be used for position measurement of an
axis, the signals of all other sensors must be excluded from the position monitoring of that axis,
especially the signals of the internal sensors integrated in the mechanics. To do this, set the
corresponding coefficients in the input matrix to zero for that axis (with the E-727.3CDA, the
internal sensors are represented by the
Position from Sensor 1
to
Position from Sensor 3
parameters). Example: To deactivate the first internal sensor for axis 1, send:
SPA 1 0x07000500 0
The position of the axis (i.e. the POS? response) will then be based on the external sensor only, but
it is still possible to read the signals of all sensors using the TSP? command.
INFORMATION
The analog input values must be scaled to suitable position values. See "Scaling the Analog Input"
(p. 87) for more information.
Make sure that internally, the analog input line used to monitor the position of an axis is not
connected to the same axis for control value generation. This means that the value of the
ADC
Channel For Target parameter
(ID 0x06000500) for an axis must be different from the identifier of
the analog input line which is used as external sensor for that axis. In PIMikroMove, you can check
this in the
Target Manipulation
parameter groups in the
Device Parameter Configuration
window.