SEW-Eurodrive DFE24B EtherCAT - Parameterization via EtherCAT

46
Manual – Fieldbus Interface DFE24B EtherCAT®
6
Parameterization via EtherCAT
®
Operating Behavior on EtherCAT
®
6.2.4 DFE24B fieldbus timeout in gateway operation
You can use the parameter P831 Fieldbus timeout response to set how the gateway
should respond when EtherCAT
®
communication times out.
6.3 Parameterization via EtherCAT
®
The SDO services READ and WRITE, which are common in CoE (CAN application pro-
tocol over EtherCAT
®
), provide access to the drive parameter in EtherCAT
®
.
6.3.1 SDO services READ and WRITE
The user interface is displayed differently depending on the EtherCAT
®
master or con-
figuration environment. In each case, however, the following data is required for execut-
ing the SDO command.
For the SDO services READ and WRITE, other flags and parameters might be neces-
sary:
• to activate the function
• to display in-process messages or error messages
• to monitor timeout times
• to report errors in the execution
P831 Fieldbus timeout response Description
No response The drives on the lower-level SBus continue to work with the last set-
point.
These drives cannot be controlled when the EtherCAT
®
communica-
tion is interrupted.
PA_DATA = 0 Rapid stop is activated for all drives that have a process data config-
uration with control word 1 or 2 when a EtherCAT
®
timeout is
detected. For this, the gateway sets the bits 0 – 2 of the control word
to 0.
The drives are stopped via the rapid stop ramp.
INFORMATION
• Inverter configuration using the EtherCAT
®
parameter channel is only possible for
MOVIDRIVE
®
MDX61B and the parameters of the DFE24B gateway.
• At present, the EtherCAT
®
SDO parameter channel does not enable access to pa-
rameters on inverters installed on the SBus below the gateway level.
• VoE services (Vendor specific over EtherCAT
®
) allow MOVITOOLS
®
MotionStudio
to also access the MOVITRAC
®
B units connected to the gateway via SBus (see
chapter "Operating MOVITOOLS
®
MotionStudio via EtherCAT
®
").
SDO-READ Description
Slave address (16 bit) EtherCAT
®
address of the inverter from which data is to be read.
Index (16 bit)
Subindex (8 bit)
Address in the object dictionary that is to be read.
Data
Data length
Structure to store received data and its length.
SDO-WRITE Description
Slave address (16 bit) EtherCAT
®
address of the inverter to which data is to be written.
Index (16 bit)
Subindex (8 bit)
Address in the object dictionary that is to be written.
Data
Data length
Structure in which the data to be written is stored.