ELAP MEM440-Bus, Instruction Manual

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MEM-BUS
EtherNet/IP™ ENCODER
Instruction Manual
ENIP_Manual_ENG 17/07/2018
18
Attributes 22 and 23, Position Low / High Limit
These attributes define a configurable work area within the measuring range.
Attribute 24, Velocity Value
It is the encoder current speed, where the format of this value is defined in attribute 25.
Attribute 25, Velocity Format
It is the format of the velocity attribute, in engineering units.
The following values are accepted:

1F04H

step/s (default)

1F05H

step/ms

1F0FH

turns/min
Note : If this attribute is changed, both
Minimum Velocity Setpoint (attribute 27) and Maximum Velocity
Setpoint (attribute 28) are reset to their default values.
Attribute 26, Velocity Resolution
It specifies the smallest incremental change of the velocity value (attribute 24).
Attributes 27 and 28, Minimum and Maximum Velocity Setpoint
The actual velocity speed limit values with minimum and maximum can be configured in attributes 27 and
28. The corresponding flags in attribute 47 (Bit6 and Bit7) are affected.
Attribute 41, Operating Status
This attribute contains the operating status of the encoder.

Bit0

Information about rotation direction is given. Position value is increasing (0) or decreasing
(1). Attribute 12 shall be used to set the counting direction.

Bit1

Information about scaling function is given (0

Disabled, 1

Enabled). Attribute 14 shall
be used to enable/disable the scaling function.
Attribute 42, Physical Resolution
This attribute contains the number of measuring steps per revolution which can be output by the
measuring system. See attributes 16 and 17 in order to set a specific resolution.
Attribute 43, Physical Resolution Number of Spans
This attribute contains the number of distinguishable revolutions that the measuring system can output.
The global physical resolution of the ELAP MEM-BUS encoder is calculated as follows
Single Turn Resolution x Number of revolutions = 8192 x 65536 = 536870912
See attributes 16 and 17 in order to set a specific total resolution.