Siemens Simatic S7 Series System Manual

Program instructions
7.8 Math
S7-200 SMART
262 System Manual, 09/2015, A5E03822230-AC
7.8.2
Multiply integer to double integer and divide integer with remainder
LAD / FBD
STL
Description
MUL IN1, OUT
The multiply integer to double Integer instruction multiplies two 16-bit integers and
produces a 32-bit product.
In STL, the least-significant word (16 bits) of the 32-bit OUT is used as one of the
factors.
• LAD and FBD: IN1 * IN2 = OUT
• STL: IN1 * OUT = OUT
DIV IN1, OUT
The divide integer with remainder instruction divides two 16-bit integers and pro-
duces a 32-bit result consisting of a 16-bit remainder (the most-significant word) and
a 16-bit quotient (the least-significant word).
In STL, the least-significant word (16 bits) of the 32-bit OUT is used as the dividend.
• LAD and FBD: IN1 / IN2 = OUT
• STL: OUT / IN1 = OUT
Non-fatal errors with ENO=0
SM bits affected
1
• 0006H Indirect address
• SM1.1 Overflow
• SM1.3 Divide by zero
• SM1.0 Result of operation = zero
• SM1.1 Overflow, illegal value generated during the operation, or illegal input
• SM1.2 Negative result
• SM1.3 Divide by zero
1
For both of these instructions, SM bits indicate errors and illegal values. If SM1.3 (divide by zero) is set during a divide
operation, then the other math status bits are left unchanged. Otherwise, all supported math status bits contain valid
status upon completion of the math operation.
Input / output
Data type
Operand
IN1, IN2
INT
IW, QW, VW, MW, SMW, SW, T, C, LW, AC, AIW, *VD, *LD, *AC, Constant
OUT
DINT
ID, QD, VD, MD, SMD, SD, LD, AC, *VD, *LD, *AC

Siemens Simatic S7 Series Specifications

General

CPU	Varies by model (e.g., S7-300, S7-400, S7-1200, S7-1500)
Communication Interfaces	PROFIBUS, PROFINET, Ethernet, MPI
Programming	TIA Portal, STEP 7
Programming Languages	LAD, FBD, STL, SCL, GRAPH
I/O Modules	Digital, Analog, Specialty modules available
Operating Temperature	0°C to 60°C (standard models)
Mounting	DIN rail mounting
Operating Voltage	24V DC or 120/230V AC (varies by model)
Protection Class	IP20 (standard models)
Memory	Varies depending on the S7 model. Includes work memory (RAM) for program execution, load memory (EEPROM or Flash) for program storage, and system memory for operating system functions. Memory sizes range from kilobytes to megabytes.