Allen-Bradley PLC-5 - Page 313

Publication 1785-UM012D-EN-P - July 2005
Instruction Set Quick Reference D-13
Instruction Description
Subtract
SUB
Tangent
TAN
X to the power of Y
XPY
SUB
SUBTRACT
Source A
Source B
Dest
N7:3
N7:4
N7:12
3
1
2
sets if borrow is generated;
sets if underflow is generated;
sets if the result is zero; otherwise resets
When the input conditions are true, subtract the value in Sou
r
B (N7:4) from the value in Source A (N7:3) and store the result
the Destination (N7:12).
Status
C
V
Z
S
Description
Bit
sets if the result is negative;
otherwise resets
otherwise resets
otherwise resets
Source
Dest
F8:15
F8:16
0.7853982
1.000000
TAN
TANGENT
When input conditions go true, take the tangent of the
value in F8:15 and store the result in F8:16.
always resets
sets if overflow is generated;
sets if the result is zero;
Status
C
V
Z
S
Description
Bit
otherwise resets
otherwise resets
sets if the result is negative;
otherwise resets
XPY
X TO POWER OF Y
Source A
Source B
Dest
N7:4
N7:5
N7:6
5
2
25
When input conditions go true, take the the value in N7:4,
raise it to the power stored in N7:5, and store the result in
always resets
sets if overflow is generated;
sets if the result is zero;
Status
C
V
Z
S
Description
Bit
otherwise resets
otherwise resets
sets if the result is negative;
otherwise resets