User Manual Chapter 5
GFK-1742F Jan 2020
DSM314 to Host Controller Interface 134
1.06 Position Valid. For a Servo Axis, the Position Valid status bit indicates that a Set
Position command or successful completion of a Find Home cycle has initialized the
position value in the Actual Position % AI status word. For a Servo Axis, Position Valid
must be ON in order to execute a motion program.
For an Auxiliary Axis, the Position Valid status bit indicates that an Aux Encoder Set
Position command or successful completion of a Find Home cycle has initialized the
position value in the Actual Position % AI status word. For an Aux Axis, Position Valid
is not required to be ON in order to execute a motion program.
If the DSM314 is configured to use an absolute feedback digital encoder (
or
Series servo with optional encoder battery), Position Valid is automatically set
whenever the digital encoder reports a valid absolute position. See Appendix C for
details of operation when absolute mode digital encoders are used.
1.07 Drive Enabled. The Drive Enabled status bit indicates the state of the Enable Drive
%Q bit and the solid-state relay output supplied by the DSM314. The ON state of the
Drive Enabled %I bit corresponds to the CLOSED state of the relay output and the ON
state of the associated faceplate EN LED. In Digital mode, the solid-state relay
provides the MCON signal to the Digital Servo through the servo command cable.
Drive Enabled is cleared following power-up or an error condition that stops the
servo.
1.08 Program Active. The Program Active status bit for each axis indicates that a Motion
Program (1-10) or a Move %AQ command (27h) is executing on that axis. Executing
a multi- axis program will set the Program Active %I bits for both Axis 1 and Axis 2.
1.09 Moving. The Moving status bit is ON when Commanded Velocity is non-zero,
otherwise it is OFF. All Move, Jog, and Move at Velocity commands will cause the
Moving bit to be set to ON. The Force Servo Velocity %AQ command and Follower
acceleration ramp will not set the Moving bit.
In Follower mode, Moving is ON for the conditions described above and is not
affected by the enabled or disabled state of the follower master input. When the
Follower acceleration / deceleration ramp is active, a separate %I bit, Follower Ramp
Active, is ON. Refer to Chapter 8, Follower Motion, for additional information on the
Follower Acceleration Ramp.
1.10 In Zone. Operation of the In Zone bit depends only on the Position Error value and is
not related to the state of the Moving bit. In Zone will be ON whenever Position Error
is less than or equal to the configured In Position Zone value. In Zone (ON) can be
used in combination with the Moving bit (OFF) to determine when the axis has
arrived at its destination.
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