Siemens SINUMERIK 828D Function Manual page 899

Figure 13-17 840D sl: PROFIBUS connection
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, as standard, 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 alarm message will be generated via the basic
program. The interrupt is deleted when the station recovers.
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
MCP2In
MCP2Out
MCP2StatSend (n.r.)
MCP2StatRec
MCP2BusAdr
MCP2Timeout
MCP2Cycl
MCP2Stop
P3: Basic PLC Program for SINUMERIK 840D sl
13.8 Structure and functions of the basic program
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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