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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 173 / 240
Phone +49 721 4846-0, Fax +49 721 4846-1019, Email
Modes of Operation
The mode of operation can be selected via the Modes of Operation object of the axis (0x6060 for
the first axis, 0x6860 for the second axis, …). The selection is possible in the
Operation enabled
state. The current mode of operation is displayed via the Modes of Operation Display objects
(0x6061 for the first axis, 0x6861 for the second axis, …).
E-727 supports the following modes of operation according to 61800-7-201:
Code Mode
1
Profile Position (PP, p. 174)
6
Homing (performs AutoZero, p. 173)
8
Cyclic Synchronous Position (CSP, p. 177)
Behavior when an invalid mode of operation is selected for an axis:
Mode of Operation Display of the axis shows 0.
An error occurs for the axis.
Error Handling
The Error code object (0x603F) provides the code of the last error which occurred in the E-727.
Possible error code with E-727:
0x4310 “Excess temperature drive”
The error code indicates that the amplifier output is switched off because the internal temperature
of the E-727 exceeds the switch-off threshold (p. 39). When the amplifier output is switched off, in
addition all axes are switched to open-loop control.
When error 0x4310 occurs, all axes of the E-727 change in the
Fault reaction active
state. When
the E-727 has cooled down and the error does no longer exist, all axes change in the
Fault
state.
Homing Mode
The Homing mode is used to perform an AutoZero procedure of the axis. The AutoZero procedure
is the only homing method supported by the E-727 (for AutoZero details, see p. 62). AutoZero is a
manufacturer-specific homing method (object 0x6098 = -1).
Supported objects (per axis):
Index*
Name
0x6040
Control word
0x6041
Status word
0x6060
Modes of operation
0x6061
Modes of operation display
0x6064
Position actual value
0x6098
Homing method
* Index for the first axis. Note that the object index is shifted by 0x800 per axis, e.g. the index of
the status word for the second axis is 0x6841.