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Integer Math (16 Bits) - Siemens CPU 412-1 Instruction Manual

S7-400; cpu 412 series; cpu 414 series; cpu 416 series; cpu 417 series;.
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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-
Instruc-
Address
Address
ID
tion
+I
Add 2 integers (16 bits)
(ACCU1-L)=(ACCU1-L)+(ACCU2-L)
–I
Subtract 1 integer from another (16 bits)
(ACCU1-L)=(ACCU2-L)-(ACCU1-L)
Status word for:
+I, –I,
Instruction evaluates:
Instruction affects:
S7-400 Instruction List
A5E00267845-01
Length
Length
Description
Description
BR
CC1
Yes
Execution Time in ms
in
in
CPU 412
CPU 414
Words
1
0.1
1
0.1
CC0
OV
OS
Yes
Yes
Yes
Integer Math (16 Bits)
CPU 416
CPU 417
0.06
0.04
0.06
0.04
OR
STA
RLO
0.03
0.03
/FC
61

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