Integer Math (16 Bits)
61
S7-400 Instruction List
A5E00267845-01
Integer Math (16 Bits)
Math instructions on two 16-bit words. The result is written to ACCU1 and/or ACCU1-L. ACCU3 and ACCU4 are then transferred to
ACCU2 and ACCU3.
Instruc-
Address
Description
Length
in
Execution Time in
s
Instruc-
tion
Address
ID
Description
Length
in
Words
CPU 412
CPU 414
CPU 416
CPU 417
+I
Add 2 integers (16 bits)
(ACCU1-L)=(ACCU1-L)+(ACCU2-L)
1
0.1
0.06
0.04
0.03
–I
Subtract 1 integer from another (16 bits)
(ACCU1-L)=(ACCU2-L)-(ACCU1-L)
1
0.1
0.06
0.04
0.03
Status word for:
+I, –I,
BR
CC1
CC0
OV
OS
OR
STA
RLO
/FC
Instruction evaluates:
–
–
–
–
–
–
–
–
–
Instruction affects:
–
Yes
Yes
Yes
Yes
–
–
–
–