SEW-Eurodrive INTERBUS UFI11A, Manual

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Manual – Fieldbus Interface INTERBUS UFI11A
INTERBUS Interface
MOVILINK para-
meter channel
acyclical The "MOVILINK parameter channel acyclical" object is 8 bytes long and contains the
MOVILINK parameter channel. This object can be used for acyclical parameter acces-
ses, i.e. the inverter processes the service coded in the parameter channel every time
a WRITE service is received on this object.
The handshake bit is not evaluated! The following table shows the structure of the "MO-
VILINK parameter channel acyclical."
There are two different procedures involved in setting the drive inverter parameters via
the acyclical MOVILINK parameter channel:
• Parameter channel performs a write service
• Parameter channel performs a read service
Parameter chan-
nel performs a
write service If a write service is performed via the acyclical parameter channel (e.g. write parameter
or write parameter volatile), the UFI11A responds with the current service confirmation
when the service has been performed. The appropriate error code is returned if the write
access is not successful.
This method offers the advantage that the write services are processed simply by sen-
ding a WRITE "MOVILINK parameter channel" once and evaluating the "write confirma-
tion". The following table shows how write services are performed via the acyclical MO-
VILINK parameter channel.
The WRITE service coded in the parameter channel is performed and the service con-
firmation is returned directly as the response.
Octet 0 1 2 3 4 5 6 7
Meaning Admin Re-
served
Index
high
Index
low
Data
MSB Data Data Data
LSB
Note Admin Re-
served
Parameter index 4 bytes data
Control (master) UFI11A fieldbus interface
1. Initiate the service coded in the parameter channel by means of a WRITE to the "MOVILINK parameter
channel cyclical" object.
WRITE 8299 (parameter channel)
Service confirmation (OK/error code)