Applied Motion RS-232 - Manual (Page 189)

189 920-0002 Rev. I
2/2013
Host Command Reference
R- - Register Subtract
Compatibility: Q drives only
Affects:
All data registers
See also: R+, R*, R/, R&, RD, RI, QJ commands
Subtracts the contents of the second data register from the first data register and places the result in the
accumulator data register, User-Defined register “0”. This is a 32-bit operation: subtracting two Long word values
can cause an underflow.
All math operations affect the “condition code” used by the QJ (Queue Jump) command. Can set condition codes
T, F, N, P, and Z.
Command Details:
Structure R-(Parameter #1)(Parameter #2)
Type BUFFERED
Usage WRITE ONLY
Non-Volatile NO
Register Access “0” (000), Accumulator
Parameter Details:
Parameter #1 First data register assignment
- units character
- range all data registers
Parameter #2 Second data register assignment
- units character
- range all data registers
Examples:
Command Drive sends Notes
R-D1 - Subtract the contents of user-defined register “1” from the distance
register “D” and place the result in the accumulator register “0”