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VIPA System 300S
Protocol parameter
Loadable protocol driver
Communication with the
user program
HB130 | CP | 341-1CH01 | en | 18-40
For parameterization of the protocol parameters the parameter plugin "Point-to-Point-
Communication, Parameter Assignment" is necessary.
This plugin may be received from Siemens.
1.
The parameter plugin "Point-to-Point-Communication, Parameter Assignment" is
started from the properties dialog of the CP by the button [Parameter...].
2.
Set at "Protocol" the protocol you want.
3.
For parameterization of the protocol click at
eters.
4.
Store the protocol specific parameters after changing them.
5.
Return to the properties dialog of the CP.
ð Translate and store your project.
There is the possibility to extend the number of protocols of the parameter plugin by
means of loadable protocol drivers. More may be found at the description of the corre-
sponding protocol.
n
With the standard protocols the communication happens by means of the handling
blocks FB 7 and FB 8, which were installed together with the parameter plugin.
n
By a cyclic call of these blocks data may be sent and received by the CP. The conver-
sion of the transfer protocols to the communication partner happens at the CP.
n
For each of these FBs an instance DB is necessary. This is to be indicated at the call
of the corresponding FB. The data for communication are to be stored in each case in
a send respectively receive DB.
n
To control the communication the FBs have control bits. Here the communication may
be started, stopped or reset with the appropriate programming for the corresponding
CP. There are status bits within the FBs for error evaluation.
Please note with the loadable protocol Modbus Slave the FB 80 -
MODB_341 is deployed for communication. Within this the FB 7 and FB 8
are called.
Deployment
Fast introduction
and set the wanted protocol param-
27
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