Siemens SINUMERIK 840D sl Function Manual page 1348

Detailed description
2.7 Structure and functions of the basic program
Figure 2-17
Relevant parameters (FB 1)
MCP
MCPNum = 1 or 2 (number of MCPs)
MCP1In
MCP1Out
MCP1StatSend (n.r.)
MCP1StatRec
MCP1BusAdr
MCP1Timeout
MCP1Cycl (n.r.)
MCPMPI = FALSE
MCP1Stop
MCPBusType = b#16#33
MCPSDB210= FALSE
MCPCopyDB77 = FALSE
MCP failure normally switches the PLC to the STOP state. If this is undesirable, OB 82, OB
86 can be used to avoid a stop. The basic program has by default the OB 82 and OB 86 call.
FC5 is called in these OBs. This FC5 checks whether the failed slave is an MCP. If this is the
case, no PLC stop is triggered. Setting "MCPxStop" := TRUE causes the basic program to
deactivate the MCP as a slave via SFC 12. If the PLC does not switch to the stop state
following the failure of or a fault on the MCP, an interrupt message will be generated via the
basic program. The interrupt is deleted when the station recovers.
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840D sl Profibus connection
MCP2In
MCP2Out
MCP2StatSend (n.r.)
MCP2StatRec
MCP2BusAdr
MCP2Timeout
MCP2Cycl
MCP2Stop
HHU
HHU = 5 (via CP 840D sl)
BHGIn
BHGOut
BHGStatSend
BHGStatRec
BHGInLen
BHGOutLen
BHGTimeout (n.r.)
BHGCycl (n.r.)
BHGRecGDNo
BHGRecGBZNo (n.r.)
BHGRecObjNo (n.r.)
BHGSendGDNo (n.r.)
BHGSendGBZNo (n.r.)
BHGSendObjNo (n.r.)
BHGMPI = FALSE
BHGStop
Basic logic functions: PLC basic program solution line (P3 sl)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0