Pg Communication - Siemens SIMATIC S7-400H System Manual

Communication
14.1 Communication services
Connection resources in the S7-400 H
S7-400 H components provide a module-specific number of connection resources.
Availability of connection resources
Table 14- 2 Availability of connection resources
CPU Total number of
connection resources
412-5H PN/DP 48
414-5H PN/DP 64
416-5H PN/DP 96
417-5H PN/DP 120
Free S7 connections can be used for any of the above communication services.
Note
Communication service via the PROFIBUS DP interface
A fixed default timeout of 40 s is specified for communication services using S7 connection
resources. Reliable operation of those communication services at a low baud rate via
PROFIBUS DP interface can be ensured in configurations with a Ttr (Target Rotation Time)
< 20 s.
14.1.2

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.
214
Can be used for Reserved from the total number for
S7 connections
PG communication
46 1
62 1
62 1
62 1
OP communication
1
1
1
1
System Manual, 03/2012, A5E00267695-11
S7-400H