Siemens SINUMERIK 840Di Function Manual page 1251

Status information
Available in
MCP1StatSend
MCP2StatSend
BHGStatSend
MCP1StatSend
MCP2StatSend
BHGStatSend
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 or HHU failure is detected immediately after a cold restart even if no data have yet
been exchanged between the MCP/HHU and PLC.
The monitoring function is activated as soon as all components have signaled "Ready" after
power-up.
840D: PROFIBUS connection
With an MCP PROFIBUS connection, these components must be considered in the STEP7
hardware configuration. The MCP may only be interfaced with the standard DP bus on the
PLC (not MPI/DP). The addresses must be stored in the input and output log range. These
start addresses must also be stored in the pointer parameters of the FB1. The FB1
parameters listed below are used for further parameterization.
There is no PROFIBUS variant of the HHU. For this reason, an Ethernet connection is
shown for the HHU in this figure. The PROFIBUS slave address must be stored in
MCP1BusAdr and MCP2BusAdr. Enter the pointer to the configured diagnostic address
(e.g., P#A8190.0) in MCPxStatRec.
PLC Basic Program Solution Line (P3 sl)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
or
2.7 Structure and functions of the basic program
Bit No. Description
4 Syntax error in data package:
Error in parameter set (FB1)
27 Transmitter:
Timeout
10 Receiver:
Timeout
Detailed Description
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