Siemens Simatic S7-400 User Manual

Communication
4.2 Communication services
S7-400 Automation System, CPU Specifications
Manual, 10/2006, 6ES7498-8AA04-8BA0
4-7
4.2.2 PG communication
Properties
Programming device communication is used to exchange data between engineering stations
(PG, PC, for example) and SIMATIC modules which are capable of communication. This
service is available for MPI, PROFIBUS and Industrial Ethernet subnets. Routing between
subnets is also supported.
You can use the programming device communication for the following actions:
● Loading programs and configuration data
● Performing tests
● Evaluating diagnostic information
These functions are integrated in the operating system of SIMATIC S7 modules.
A CPU can maintain several simultaneous online connections to one or multiple
programming devices.
4.2.3 OP communication
Properties
OP communication is used to exchange data between HMI stations, such as WinCC, OP, TP
and SIMATIC modules which are capable of communication. This service is available for
MPI, PROFIBUS and Industrial Ethernet subnets.
You can use the OP communication for operator control, monitoring and alarms. These
functions are integrated in the operating system of SIMATIC S7 modules. A CPU can
maintain several simultaneous connections to one or several OPs.

Siemens Simatic S7-400 Specifications

General

Programming Language	STEP 7 (LAD, FBD, STL, SCL, GRAPH)
Communication Interfaces	MPI, PROFIBUS
Power Supply	24 V DC, 120/230 V AC (Power supply modules are separate and chosen based on system requirements)
Operating Temperature	0°C to 60°C
Mounting	Rack mounting
Processor	CPU 412-1, CPU 414-2, CPU 416-2, CPU 417-4 (Different CPUs offer varying performance and features)
Relative Humidity	5 to 95% (non-condensing)