06.03
10.8 PROFIBUS DP
10-393
Siemens AG, 2003. All rights reserved
SINUMERIK 840Di Manual (HBI) – 06.03 Edition
10.8
PROFIBUS DP
10.8.1
Setting the parameters for the shut-down behavior
If specific DP slaves react to an abrupt shut-down of PROFIBUS DP commu-
nication with error states, e.g. in response to on a power ON NC reset (warm
restart), machine data:
MD11250 PROFIBUS_SHUTDOWN_TYPE (PROFIBUS shutdown han-
dling)
can be used to configure the staged shut-down of PROFIBUS DP communica-
tion.
Note
The drives available for SINUMERIK 840Di:
–
SIMODRIVE 611U / UE
–
SIMODRIVE POSMO SI / CD / CA
can be operated by default with mode 0 (abrupt shut-down of PROFIBUS DP
communication). This corresponds to the initialized default setting of the ma-
chine data (see Subsection 10.8.2, page 10-393).
10.8.2
Data descriptions (MD)
11250
PROFIBUS_SHUTDOWN_TYPE
MD number
PROFIBUS shutdown handling
Default settings: 0
min. input limit: 0
max. input limit: 2
Changes valid after RESET
Protection level: 2 / 7
Unit: –
Data type: UINT8
valid from SW: 2.2
Meaning:
Shut-down modes of PROFIBUS DP communication:
0 =
PROFIBUS DP communication is shut down at the DP master end without any
warning.
1 =
PROFIBUS DP is switched to CLEAR mode for at least 20 clock cycles.
PROFIBUS DP communication is then shut down.
If it is not possible to switch the PROFIBUS DP to CLEAR mode, the
procedure described in step 2 is followed.
To be used for: SINUMERIK 840D with DP-Link module.
2 =
Null vales are transmitted for at least 20 clock cycles for all DP slave drives
connected to PROFIBUS DP for the following frame data:
– Control word 1
– Control word 2
PROFIBUS DP communication is then shut down.
To be used for: SINUMERIK 840Di with PLC 315-2DP, 314-2C, 317-2DP.
General
machine data
10 NC Start-Up with HMI Advanced