Beckhoff BC3150, Документация

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Appendix
BC3150 95 Version: 2.1.0
Switching from BCxx00 to BXxx00
File names
In the Bus Terminal controllers of the BCxx00, libraries have the extension *.lbx, programs have the
extension *.prx.
Flag variables
The allocated flag variables
• of the BCxx00 are assigned %MB0...%MB511 (except BC9000/BC9100: %MB0...%B4095).
• of the BXxx00 are assigned %MB0...%MB4095
Status information such as K-bus/fieldbus status and cycle tick is not copied to the BXxx20. This information
is available in TcSystemBCxx00.lbx as a function for the BXxx50.
The allocated flags do not act as retain variables.
Retain data
The retain data have to be declared as VAR_RETAIN [
}
58] . Up to 2 kbyte are available.
PLC Variables
In the Default-Config the PLC variables start from %IB1000 and %QB1000.
Large model
Not applicable for BXxx00. Max. memory: 256 kbyte.
Task time
The task time is specified in the PLC Control. It should be set to a realistic value (measuring of PLC cycle
time and K-Bus). The background time is not used.
Task configuration
A maximum of one task is available. This task must be configured.
PLC and fieldbus terminals
For the standard Bus Terminal Controllers (BCxx00) it was possible to select whether a Bus Terminal is
assigned to the fieldbus or the local PLC.
In the default configuration of the BXxx00 all Bus Terminals are assigned to the local PLC. An assignment to
the fieldbus is not possible in this case.
Switching from PC to BCxx50/BCxx20/BXxx00
File names
In the Bus Terminal controllers of the BCxx50/BCxx20 and BXxx00 series, libraries have the extension *.lbx,
programs have the extension *.prx.
Allocated variables
For the Bus Terminal controllers of the BCxx50/BCxx20 and BXxx00 series, a limited number of allocated
data are available:
• inputs 2 kbyte, %IB0…2048
• outputs 2 kbyte, %QB0…2048
• flags 4 kbyte, %MB0…4095