Technical information

125
Software Setup and Operation
Count
For each of the Index Types, the Count is the number of times the Index will repeat when
initiated. The End Of Index Output, if assigned, will come on at the end of each index; Index
Count completes only once after all repetitions are complete and any non-zero entry for index
dwell time has expired.
Count defaults to Ø (zero) and a number must be entered or the index is ignored.
Note
Count for Absolute Indexes should always be 1. You only go to a specific position once.
Suspend/Resume
The Suspend Function is used to temporarily interrupt the operation of a running program and
is initiated with Input Function #31. The Resume Function causes the system to finish the
program that was suspended. Resume is initiated with Input Function #32.
When a Suspend command is received, the FX drive will stop motion using the Stop/Hold
Decel ramp entered in the Limits screen. The motor position will then be stored in a Return
To Position Index, and the interrupted program task will be stored in the memory of the drive.
The drive will now accept and execute new motion commands such as Jog, Home, Index, or
Program Initiate. This can continue until a Resume command is received.
Upon receiving a Resume command, the drive will continue the execution of the program
which was suspended. If an index was in progress when the suspend occurred, any index
distance remaining at the end of the Suspend ramp will be executed by the Resume function,
regardless of the motor position at the time of Resume.
Note
If an Absolute Index is suspended and the axis is moved some distance by a Jog, Index,
Home or when it was inhibited, the end position of the Absolute Index will be offset by
this distance if a Return To Position is not performed first.
This does not apply to suspend operations when Automatically Suspend Upon Fault is active.
If you move the motor in any way during a Suspend function, and you want the motor position
to be the same as if the Suspend had not occurred, you must run a “Return To Position Index”
before you initiate a Resume function. You must have previously set up this index as an
absolute index with the speed and ramps you wish to use for the Return to Suspended Position
move, along with a repeat count of 1. The index you set up is the one you select when you
enter “Return/Resume Index Number” in the Suspend/Resume screen. Suspend, Resume,
Return to Position, and Clear Suspend functions are activated through input functions in the
I/O.
A Suspend will not be accepted while a Hold cycle is active, while a previous Suspend is
active, or a decel ramp is in progress. The memory for the Suspend function will only hold