Beckhoff EL6731 User Manual

Parameterization and commissioning
EL6731 47Version: 2.8
MSAC-C1 Write
ADS-Write parameters Meaning
Net-ID
Net-ID of the master (see the device's ADS [}92] tab)
Port 0x1000 + station address of the slave
IndexGroup Slot number (DPV1 parameter)
IndexOffset Index (DPV1 parameter)
Length Length of the data that is to be written
Data In request: data that is to be written
C2 Connection (MSAC-C2)
The C2 connection is as a rule intended for a second master (C2 master) that does not communicate with
the slave cyclically, but it is also possible for the C1 master to make use of the C2 connection. In order for a
slave to be able to use the C2 connection, the slave must support DPV1 (this means that the line
"DPV1_Slave = 1" and the key word "C2_Max_Data_Len" with an appropriate length must be in the GSD
file).
The connection is automatically established by the master as soon as a Read, Write or Data_Transport
access is requested; it can, however, also be explicitly established through an Initiate. When the connection
is being established automatically, the master sends the Initiate parameters that have most recently been
passed (see the description of Initiate), and initializes the Initiate parameters with 0 after a TwinCAT start (or
restart); monitoring of the connection is an exception - this is initialized in accordance with the value set in
the System Manager (Watchdog under DPV1 Class 2 on the slave's Profibus [}96] tab).
It is also necessary for the C2 functionality to be activated for each slave that is to be addressed using C2
services by selecting the Enable check box under DPV1 Class 2 (see the slave's Profibus [}96] tab).
If a different master performs cyclic data exchange with the slave, then the "No cyclic connection" setting
must be chosen under DP Class 2 (see the slave's Profibus [}96] tab). This could, for instance, be useful
in order to be able to debug a BC3100/IL23xx-C310 over PROFIBUS, even though it is being operated by an
external controller.
MSAC-C2-Read is represented in ADS-Read, MSAC-C2-Write in ADS-Write, MSAC-C2-Data_Transport in
ADS-ReadWrite, MSAC-C2-Initiate in ADS-ReadWrite, and MSAC-C2-Abort in ADS-Write:
MSAC-C2 Read
ADS-Read parameters Meaning
Net-ID
Net-ID of the master (see the device's ADS [}92] tab)
Port 0x1000 + station address of the slave
IndexGroup 0x100 + slot number (DPV1 parameter)
IndexOffset Index (DPV1 parameter)
Length Length of the data that is to be read
Data In response: data that has been read
MSAC-C2 Write
ADS-Write parameters Meaning
Net-ID
Net-ID of the master (see the device's ADS [}92] tab)
Port 0x1000 + station address of the slave
IndexGroup 0x100 + slot number (DPV1 parameter)
IndexOffset Index (DPV1 parameter)
Length Length of the data that is to be written
Data In request: data that is to be written

Beckhoff EL6731 Specifications

General

Brand	Beckhoff
Model	EL6731
Category	Touch terminals
Language	English