Detailed description
2.5 Linking PLC CPUs to 840D
Basic logic functions: PLC basic program solution line (P3 sl)
30
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
Interface MCP/PLC, interface HHU/PLC (Ethernet link)
MCP/PLC and HHU (HT2) /PLC data exchange takes place via the integrated CP's Ethernet
bus. The CP transfers the MCP/HHU signals to and fetches them from the PLC's internal
DPR (Dual-Port RAM). On the PLC side, the basic program handles communication with the
user interface. The basic-program parameters (FB1, DB7) define the operand areas (e.g.
I/O) and the start addresses.
Interface MCP/PLC (Profibus link)
MCP/PLC data exchange takes place via the PLC's Profibus. The MCP's I/O addresses
must be set in the PLC's process image area and via HW configuration in STEP7. The
MCP*In, MCP*Out pointer variables must be set to the same addresses. The selected DP
slave number must be entered in MCP*BusAdr.
Interface MCP/PLC, interface HHU/PLC (MPI link)
is no longer supported
2.5.4
Diagnostic buffer on PLC
General
The diagnostic buffer on the PLC, which can be read out using STEP7, contains diagnostic
information about the PLC operating system.
Summary of Contents for SINUMERIK 840D sl
Page 282: ...Index Basic logic functions Acceleration B2 64 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 388: ...Basic logic functions Travel to fixed stop F1 Function Manual 11 2006 6FC5397 0BP10 2BA0 52 ...
Page 962: ...Index Basic logic functions Emergency Stop N2 20 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1704: ...Constraints Basic logic functions Spindles S1 94 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1716: ...Index Basic logic functions Spindles S1 106 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1996: ...Index Basic logic functions Tool Offset W1 208 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 2150: ...Table of contents Basic logic functions Appendix 4 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 2184: ...Glossary Basic logic functions Appendix 38 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...