Siemens SINUMERIK 840Di Function Manual page 1254

Detailed Description
2.7 Structure and functions of the basic program
Status information (MCP1 and MCP2 see above)
Available in
MCP1StatRec
MCP2StatRec
BHGStatRec
An error entry is also made in the PLC diagnostic buffer for timeouts (bits 10 and 27),
resulting in the following error messages on the HMI:
• 400260: MCP 1 failure
• 400261: MCP 2 failure
• 400262: HHU failure
An MCP/HHU failure is detected only following a cold restart if the MCP/HHU has previously
been involved in data exchange. The first exchange of data with the MCP/HHU activates the
monitoring function.
Configuring global data
An additional SIMATIC 300 station for each component needs to be added to the machine
project for the configuration of the machine control panel/handheld unit. Any type of CPU
must be inserted in location 2 on row 0 in this station by means of the hardware configuration
(HW Config.). The desired MPI address of the operator component must be set as the MPI
address. MPI network(1) can then be marked in the SIMATIC Manager. The global data can
then be activated via the Extras menu item. The rest of the procedure is described in detail in
the Installation and Start-Up Guide.
A special variant of GD communication with a standard SDB210 is to be represented here.
The standard SDB210 is designed for all MCPs and HHUs on DB77. Other pointers can be
wired to the FB1. The basic program manages data transfer if the FB1 parameter
MCPCopyDB77 is set to True (see figure below). If you are using the standard SDB210, the
following settings must be made on the MCPs/HHUs:
1. MCP must be set to bus address 14. MCP2 must be set to bus address 10. In respect of
the GD parameters, HHU must be set to the default settings of 2.1.1 and 2.2.1. All
components must be set to a transfer rate of 187.5 kbaud.
2-60
or
Bit No. Description
10 Receiver:
Timeout
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
PLC Basic Program Solution Line (P3 sl)