Siemens SINUMERIK 840D sl Function Manual page 873

Figure 13-15 PROFIBUS connection
Relevant parameters (FB1)
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, as standard, the OB82 and OB86 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 SFC12. If the PLC does not switch to the stop state following
the failure or fault of the MCP, an alarm message will be generated via the basic program. The
interrupt is deleted when the station recovers.
Basic Functions
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
P3: Basic PLC program for SINUMERIK 840D sl
13.10 Structure and functions of the basic program
MCP2In
MCP2Out
MCP2StatSend (n.r.)
MCP2StatRec
MCP2BusAdr
MCP2Timeout
MCP2Cycl (n.r.)
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
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