Siemens SINUMERIK 840D sl Function Manual page 1059

Status information
Available in
MCP1StatSendMCP2Stat
Send
BHGStatSend
MCP1StatSendMCP2Stat
SendB
HGStatSend
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 operator interface:
• 400260: MCP 1 failure
• 400261: MCP 2 failure
• 400262: HHU failure
An MSTT or BHG failure is detected immediately after a cold restart even if no data have yet
been exchanged between the MSTT/BHG and PLC.
The monitoring function is activated, as soon as all the components report "Ready" after the
power-up.
MPI connection and 810D (SW 4 and lower)
Communications for MCP and HHU by PLC operating system and parameterization via
SDB210.
Figure 2-18
Basic logic functions: PLC Basic program powerline (P3 pl)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
Or
MPI connection and 810D
2.7 Structure and functions of the basic program
Bit No. Description
4 Syntax error in GD package:
Error in parameter set (FB1)
27 Transmitter:
Time-out
10 Receiver:
Time-out
Detailed description
75