Detailed description
2.7 Structure and functions of the basic program
Basic logic functions: PLC basic program solution line (P3 sl)
70 Function Manual, 11/2006, 6FC5397-0BP10-2BA0
Relevant parameters (FB 1)
MCP HHU
MCPNum=1 or 2 (number of MCPs) HHU = 5 (via CP 840D sl)
MCP1In MCP2In BHGIn
MCP1Out MCP2Out BHGOut
MCP1StatSend MCP2StatSend BHGStatSend
MCP1StatRec MCP2StatRec BHGStatRec
MCP1BusAdr MCP2BusAdr BHGInLen (n.r.)
MCP1Timeout (n.r.) MCP2Timeout (n.r.) BHGOutLen (n.r.)
MCP1Cycl (n.r.) MCP2Cycl (n.r.) BHGTimeout (n.r.)
MCPMPI = FALSE BHGCycl (n.r.)
MCP1Stop MCP2Stop BHGRecGDNo
MCP1 NotSend MCP2 NotSend BHGRecGBZNo (n.r.)
BHGRecObjNo (n.r.)
MCPBusType = b#16#55 (via CP 840D sl) BHGSendGDNo (n.r.)
BHGSendGBZNo (n.r.)
MCPSDB210= FALSE BHGSendObjNo (n.r.)
MCPCopyDB77 = FALSE BHGMPI = FALSE
BHGStop
BHG NotSend
An error entry is also made in the PLC alarm buffer for timeouts. resulting in the following
error messages on the HMI:
• 400260: MCP 1 failure
or
• 400261: MCP 2 failure
• 400262: HHU failure
An MCP or HHU failure is detected immediately after a cold restart even if no data have yet
been exchanged between the MCP/HHU and PLC.
The monitoring function is activated as soon as all components have signaled "Ready" after
powerup.
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