➄
Software Commands
85
RA—Limit Switch Status Request
❏
Command Type: Status
❏
Valid Software Version: A
❏
Syntax: aRA
❏
Units: N/A
❏
Range: N/A
❏
Default Value: N/A
❏
Attributes: Immediate,
❏
See Also: R, RB
Never Saved
❏
Response to aRA is *x
The RA command responds with the status of the end-of-travel limits during the last move
as well as the present condition. This is done by responding with one of 12 characters
representing the conditions listed below.
Response
Last Move Terminated By
Current Limit Status
Character
CW Limit—CCW Limit
CW Limit—CCW Limit
*@
No
No
Off
Off
*A
Yes
No
Off
Off
*B
No
Yes
Off
Off
*D
No
No
On
Off
*E
Yes
No
On
Off
*F
No
Yes
On
Off
*H
No
No
Off
On
*I
Yes
No
Off
On
*J
No
Yes
Off
On
*L
No
No
On
On
*M
Yes
No
On
On
*N
No
Yes
On
On
The RA command is useful when the motor will not move in either or both directions. The
report back will indicate if the last move was terminated by one or both end-of-travel limits.
This command is not intended to be used to determine if a move is complete. It should be
used after a move to determine if errors or faults exist. If you are hitting a limit switch, the
Ready Status (R) will return a *S.
Command
Response
1RA
*@ (the last move was not terminated by a limit and no limits are currently
active.)
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
