Siemens SINUMERIK 840DiE sl Manual page 218

8 PROFIBUS DP Communication
8.7 DP slave: MCP 483
VDI interface
parameter
assignment
Example
PLC user program
Customized
response
8-218
The following function blocks can be used to assign the VDI interface:
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FC 19: Machine control panel MCP 483, version M (milling)
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FC 25: Machine control panel MCP 483, version T (turning)
Notice
Function blocks FC 19, FC 24 and FC 25 are part of the PLC basic program. It
is the user's (machine manufacturer's) responsibility to call the block correctly
and/or assign the interface the appropriate parameters.
References
A detailed description of the function blocks for transferring machine control
panel signals to the VDI interface can be found in:
/FB1/ Description of Functions, Basic Functions: P3, PLC Basic Program
Section: FC 19: MCP_IFM ...
Section: FC 24: MCP_IFM2 ...
Section: FC 25: MCP_IFT ...
The following example shows the communication parameter settings for func-
tion block FB 1 for an MCP:
MCPNum := 1
MCP1In := P#E0.0
MCP1Out := P#A0.0
MCP1StatRec := P#A8190.0
MCP1BusAdr := 5
MCP1Timeout := S5T#700MS
MCPMPI := FALSE
MCP1Stop := FALSE
MCPSDB210 := FALSE
MCPCopyDB77 := FALSE
MCPBusTyp := B#16#33
If an MCP is connected via PROFIBUS DP, the basic PLC program does not
check for module failure.
In this case the MCP is monitored by a standard mechanism to monitor the ac-
tive DP slave:
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PLC operating system
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PROFIBUS controller
If the failure of DP slave: MCP 483 is detected the PLC goes into the STOP
status as default.
to allow the user to intervene when a DP slave: MCP 483, the following orga-
nization blocks are inserted in the PLC user program:
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OB 82: Diagnostic alarm
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OB 86: Rack failure
// Number of MCPs
// Address: Input data
// Address: Output data
// Configured diagnostic address
// PROFIBUS address of the DP slave MCP
// Default setting
// No MPI bus
// Deactivation of the DP slave MCP
// No SDB210 for MCP
// No copying to DB77
// PROFIBUS
© Siemens AG 2007 All Rights Reserved
SINUMERIK 840Di sl Manual (HBIsl) – 01/2007 Edition
01/2007