3
03.96
3.2 Standard configuration
3-39
 Siemens AG 2000 All Rights Reserved
SINUMERIK 840D Installation and Start-Up Guide (IAD) – 04.00 Edition
Note
Cable with 3 MPI connectors (Order No.: 6FX2002–4EA04–IAF0 (IBA0))
S This cable is used for connecting a standard machine consisting of MMC,
MCP and NCK via OPI/MPI.
S It must not be used for setting up an m:n installation.
S Components must not be connected using internal bus terminators (e.g.
HHU, HPU), because the cable is already fitted with bus terminators.
Table 3-1 Settings on DIP switch S3 for standard application
1 2 3 4 5 6 7 8 Meaning:
on off on off on on off off MCP:
Baud rate: 1.5 Mbaud
Cyclical transmit pattern: 100 ms
Bus address: 6
on off on off on on off on Interface to customer operator
panel:
Baud rate: 1.5 Mbaud
Cyclical transmit pattern: 100 ms
Bus address: 6
The following bytes in the PLC CPU are assigned for the MCP or interface to
the customer operator panel:
S Input bytes 0–7
S Output bytes 0–7
S Status bytes for error detection, output bytes 8–11, 12–15 (evaluated by
basic program)
The parameters on FB1 (basic program) for the MCP are already set to the de-
fault values for the standard application.
If communication does not commence after a PLC reset (MCP LEDs flashing),
the following points should be checked:
S Firmware version of MCP/interface to customer operator panel must be
V03_01_01 or higher
S Cable and connector wiring
S DIP switch S3 (standard application)
Setting the MCP/
interface to
customer operator
panel
Assigned inputs/
outputs in the
PLC CPU
Communication
does not start
3 Settin
s, MPI / OPI
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