Motion State Instructions
Rockwell Automation Publication MOTION-RM002H-EN-P-February 2018 47
Description
The MASR instruction clears all axis faults and takes the specified axis out of the
Shutdown state. If the motion module supports an OK contact, and no other
module axis is in the Shutdown state, the MASR instruction results in closure of
the module’s OK solid-state relay contact. Regardless of the OK contact
condition, execution of the MASR places the axis into the Axis Ready state.
Just as the Motion Axis Shutdown (MASD) instruction forces the targeted axis
into the Shutdown state, the MASR instruction takes the axis out of the
Shutdown state into the Axis Ready state. One of the unique characteristics of the
Shutdown state is that any associated OK solid state relay contact for the motion
module is Open. If, as a result of an MASR instruction there are no axes associated
with a given motion module in the Shutdown state, the OK relay contacts close as
a result of the MASR. This feature can be used to close the E-Stop string that
controls main power to the drive system and, thus, permit the customer to reapply
power to the drive. Note that there is typically only one OK contact per motion
module which means that execution of the MASR instruction may be required for
all axes associated with a given module for the OK contact to close.
The MASR instruction is a procedure type command that is processed from the
Logix controller, through the associated motion module, and to the associated
drives.
Important:
The instruction execution may take multiple scans to execute because it
requires multiple coarse updates to complete the request. The Done (.DN)
bit is not set immediately, but only after the request is completed.
In this transitional instruction, the relay ladder, toggle the rung-condition-in from
cleared to set each time the instruction should execute.
Affects Math Status Flags
No
Major/Minor Faults
None specific to this instruction. See Common Attributes for operand-related
faults.
To Next Page
Loading...
Need help?
General
