Siemens SINUMERIK 840Di Manual page 235

06.03
Dialog
Consistency
 Siemens AG, 2003. All rights reserved
SINUMERIK 840Di Manual (HBI) – 06.03 Edition
Notice
The I/O address set by the SlaveOM for an axis must match the I/O address
set in the NC.
No automatic adjustment takes place!
The following data must be identical.
1. SIMATIC S7 configuration of DP slave 611U
I/O address
2. SINUMERIK 840Di-NC
MD13060 DRIVE_LOGIC_ADDRESS[n], (logical drive address).
Note
To avoid any modifications to the I/O addresses in NC machine data:
S
MD 13050 DRIVE_LOGIC_ADDRESS[n].
it is recommended to use the default values of the machine data when config-
uring the I/O addresses within the configuration:
1. Axis: Default I/O address = 272
mth Axis: Default I/O address = 272 + (m-1)*20
The default setting for the machine data is described in Subsection 10.5.1,
page 10-308.
Dialog: DP Slave Properties
Tab: Configuration
Table entry: PROFIBUS partner, I/O addr.: <I/O address>
OK
After you have confirmed this dialog using the button: "OK", the dialog:
"DP slave properties" closed. Step 1 of parameterization of DP slave 611U is
then complete.
The default setting with regard to the consistency of the I/O data is whole
length.
This setting results in:
S
Direct accesses from the PLC user program (e.g. byte, word or double word)
to this address range are not admitted by the PLC operating system.
S
Accesses to this address range must be carried out using the system func-
tions SFC 14 and SFC 15.
S
The system functions SFC 14 and SFC 15 guarantee consistent reading/
writing of the data of an axis, e.g.:
– Message frame type 102: 6 words for the set value or 10 words for the
actual value
7 PROFIBUS DP Communication
7.3 SIMATIC S7 project
7-235