Detailed Description
2.7 Structure and functions of the basic program
PLC Basic Program Solution Line (P3 sl)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
2-59
840D: MPI connection
If an MPI connection is used for the MCP and HHU, these components must be taken into
account in the configuration for global data in STEP7 (NetPro). Although the addresses of
the MCP and HHU can be stored anywhere, we recommend a free input and output image
area. These start addresses must also be stored in the pointer parameters of the FB1. The
FB1 parameters listed below are used for further parameterization.
Setting MCP1Stop, MCP2Stop, BHGStop = 1 will suppress time monitoring. MCP failed
interrupts are suppressed.
Once the configuration has been compiled in NetPro, the SDB 210 in the SDB container will
need to be loaded on the PLC.
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Fig. 2-18 MPI connection
Relevant parameters (FB1)
MCP HHU
MCPNum=1 or 2 (number of MCPs) HHU = 1 (MPI)
MCP1In MCP2In BHGIn
MCP1Out MCP2Out BHGOut
MCP1StatSend MCP2StatSend BHGStatSend
MCP1StatRec MCP2StatRec BHGStatRec
MCP1Timeout MCP2Timeout BHGTimeout
MCPMPI = TRUE BHGMPI = TRUE
MCP1Stop MCP2Stop BHGStop
MCPSDB210 = TRUE
MCPCopyDB77 = TRUE or FALSE
MCPBusType = B#16#00
(all pointer entries as parameterized in SDB210 global data)
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