Operating instructions

Absolute Rotary Encoders
75
Pepperl+Fuchs Inc. • 1600 Enterprise Parkway • Twinsburg, Ohio 44087-2245 • www.am.pepperl-fuchs.com
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PEPPERL+FUCHS
Absolute Encoders CVS58/CVM58 Series
Programming
Description
The connected host requests the current actual position value via a telegram. The absolute
encoder reads in the current position, calculates all parameters that may have been set and
then sends back the actual process value.
The absolute encoder sends the current actual process value cyclically, without being
prompted by the host. The cycle time can be programmed in milliseconds for values between
1 ms and 65,536 ms.
After the sync telegram has been received by the host, the absolute encoder sends the
current actual process value. If multiple nodes should respond to the sync telegram, the
individual nodes report one after the other according to their CAN identifier. There is no
programming of an offset time. The sync counter can be programmed so that the rotary
encoder does not transmit until after a defined number of sync telegrams.
Mode
Polled mode
Cyclic mode
Sync mode
Description
The direction of rotation (complement) can be specified as the operating parameter. This
parameter determines the direction of rotation in which the output code will be rising or
declining.
The "Resolution" parameter is used to program the rotary encoder so that a desired number
of steps can be implemented in reference to a revolution.
The preset value is the desired position value that must be achieved for a specific physical
setting of the axis. The preset value parameter is used to set the actual position value to the
desired actual process value.
A total of two positions can be programmed. The absolute encoder sets one bit to high state
in the 32 Bit actual process value if a value falls outside the range between two positions.
A freely programmable cam can be set within the overall resolution. This produces the
functionality of a mechanical cam shifting mechanism.
Parameter
Operating parameter
Resolution per revolution
Preset value
Min. and max. limit switch
Cam
Programmable CAN operating modes
Programmable rotary encoder parameters
Description
The direction of rotation (complement) can be specified as the operating parameter. This
parameter determines the direction of rotation in which the output code will be rising or
declining.
The "Resolution" parameter is used to program the rotary encoder so that a desired number
of steps can be implemented in reference to a revolution.
This parameter indicates the desired number of measurement units of the entire travel length.
This value must not exceed the overall resolution of the absolute encoder.
The preset value is the desired position value that must be achieved for a specific physical
setting of the axis. The preset value parameter is used to set the actual position value to the
desired actual process value.
A total of two positions can be programmed. The absolute encoder sets one bit to high state
in the 32 Bit actual process value if a value falls outside the range between two positions.
A freely programmable cam can be set within the overall resolution. This produces the
functionality of a mechanical cam shifting mechanism.
Parameter
Operating parameter
Resolution per revolution
Overall resolution
Preset value
Min. and max. limit switch
Cam
CVM58
CVS58