Communication with the S7-300
5.3 Communication services on the MPI/DP interface (X1)
5.3.2 PG communication
Properties
PG 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. Transition between subnets is
also supported.
PG communication provides the functions needed to download / upload programs and
configuration data, to run tests and to evaluate 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 PGs.
Reference
Further information
• on SFCs can be found in the
Instruction list
, for more details refer to the
STEP 7 online
help
or to the
System and Standard Functions
reference manual.
• on communication can be found in the
Communication with SIMATIC
manual.
5.3.3 OP communication
Properties
OP communication is used to exchange data between operator stations (OP, TD, for
example) and SIMATIC modules which are capable of communication. This service is
available for MPI, PROFIBUS and Industrial Ethernet subnets.
OP communication provides functions you require for monitoring and modifying. These
functions are integrated in the operating system of SIMATIC S7 modules.
A CPU can maintain several simultaneous connections to one or several OPs.
Reference
Further information
• on SFCs can be found in the
Instruction list
, for more details refer to the
STEP 7 online
help
or to the
System and Standard Functions
reference manual.
• on communication can be found in the
Communication with SIMATIC
manual.
S7-300 CPU Data: CPU 315T-2 DP
5-8 Manual, 12/2005, A5E00427933-02
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