Applied Motion RS-232 - Manual (Page 43)

43 920-0002 Rev. I
2/2013
Host Command Reference
BS - Buffer Status
Compatibility: All drives
See also:
CT, PS commands
Requests from the drive the number of available command locations in the command buffer. This technique
simplifies sending commands by eliminating the need to calculate if there is enough space in the buffer for a
command. If the drive responds with at least a “1”, a command can be sent.
If a drive responds to the BS command with the value “63” it means the buffer is empty. If a “0” is returned the
buffer is full and no more buffered commands can be accepted (a buffer overflow will occur if another command is
sent).
Command Details:
Structure BS
Type IMMEDIATE
Usage READ ONLY
Non-Volatile NO
Register Access None
Units Empty command spaces in buffer
Examples:
Command Drive sends Notes
BS BS=20 There is room in the buffer for 20 more commands