Integer Math (32 Bits) - Siemens CPU 412-1 Instruction Manual

Integer Math (32 Bits)

Math instructions on two 32-bit words. The result is written to ACCU1. ACCU3 and ACCU4 are then transferred to ACCU2 and ACCU3.
Instruc- Instruc- Address Address
tion ID
+D Add 2 integers (32-bit)
(ACCU1)=(ACCU2)+(ACCU1)
–D Subtract 2 integer from another (32 bits)
(ACCU1)=(ACCU2)-(ACCU1)
* D Multiply 2 integer by another (32 bits)
(ACCU1)=(ACCU2) * (ACCU1)
Status word for: +D, –D, * D, /D
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
1 0.1
CC0 OV OS
– – –
Yes Yes Yes
Integer Math (32 Bits)
CPU 416 CPU 417
0.06 0.04
0.06 0.04
0.06 0.04
OR STA RLO
– – –
– – –
0.03
0.03
0.03
/FC
–
–
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