09.2008 Communication / PROFIBUS
Siemens AG 6SE7087-6QX70 (Version AK)
SIMOVERT MASTERDRIVES Compendium Motion Control 8.2-15
In the SIMATIC S7, the data block with the index 100 corresponds to the
data record DS100.
From the SIMATIC S7 side, data can be exchanged via the MSAC_C1
channel with the system functions SFC 58 "WR_REC" (Write Data
Record) and SFC 59 "RD_REC" (Read Data Record).
When the system functions are called, the parameter RECNUM is to be
set to 100.
If the logical address of the CBP is determined by means of SFC 5
"GADR_LGC" (convert geographical address to logical address), the
parameters are to be provided with the following when SFC 5 is called:
SUBNETID =
ID of the planned DP master system in accordance with the
hardware configuration
RACK = Node / bus address of the CBP
SLOT = 2
According to S7
HW configuration
SUBSLOT = 0
SUBADDR = 0
The function-block package, DVA_S7 (see also section 8.2.8.2), is a
standard method of data exchange between the SIMATIC S7 and the
CBP via the acyclical MSAC_C1 channel. The user is provided with a
data block as the data interface. This data block has a TRANSMIT
MAILBOX and a RECEIVE MAILBOX, thus considerably reducing the
expenditure on the application for the user.
Example for the
SIMATIC S7
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