Siemens Simatic S7 Series System Manual

Communication
8.5 PROFIBUS
S7-200 SMART
System Manual, 09/2015, A5E03822230-AC
393
Table 8- 12 Example: Configuring DP communications to an S7-200 SMART CPU
LAD/FBD
Description
STL
Network 1:
Calculate the Output
data pointer. If in data
exchange mode:
1. Output buffer is an
offset from VB0.
2. Convert V memory
offset to double in-
teger.
3. Add to VB0 ad-
dress to get output
data pointer.
LDB= SMB224, 2
MOVD &VB0, VD1000
ITD SMW226, AC0
+D AC0, VD1000
Network 2:
Calculate the Input
data pointer. If in data
exchange mode:
1. Copy the output
data pointer.
2. Get the number of
output bytes.
3. Add to output data
pointer to get start-
ing input data
pointer.
LDB= SMB224, 2
MOVD VD1000,
VD1004
BTI SMB228, AC0
ITD AC0, AC0
+D AC0, VD1004

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.