3.3 Safe Channel 2
In Safe Channel 2, copies of the absolute position value and the status of the motor
feedback system are transferred. This information can be discarded in non-safe appli‐
cations.
NOTE
The Safe Channel 2 is only accessible in the safety variants of the DSL Master IP Core.
For sampling time of safe channel 2 see chapter 3.2.1.
3.4
Parameters Channel
The Parameters Channel is the interface, over which the frequency inverter application
reads and writes parameters of the motor feedback system.
In addition to the main task of position measurement, motor feedback systems with the
HIPERFACE DSL
®
interface also have various internal resources installed. These
resources are accessible via the Parameters Channel.
Examples of these resources are temperature measurements, monitoring - mecha‐
nisms for correct functioning, product data (the "electronic type label") or freely pro‐
grammable data fields.
NOTE
It should be noted that the resources actually installed for DSL products differ and are
listed in the relevant product data sheet.
There are two types of communication on the Parameters Channel:
•
"Short message" transaction
•
"Long message" transaction
A "short message” transaction allows access to resources that have an influence on
the HIPERFACE DSL
®
protocol interface and are used for monitoring them. This includes
detailed status and error messages for the motor feedback system and indications of
the signal strength on the DSL connection. As a "short message" transaction is
processed directly by the interface logic of the motor feedback system, this transaction
is completed in a comparatively short time.
A "long message" transaction allows access to all the other resources of the motor
feedback system. Unlike a "short message" transaction, a "long message" normally
requires processing by the motor feedback system processor and therefore has does
not have a response time that can be defined in advance.
NOTE
It should be noted that in HIPERFACE DSL
®
, a maximum of one "short message" and
one "long message" are processed at any time.
3.5 SensorHub Channel
Data from additional external sensors can be transferred on the SensorHub Channel
that can be used in the frequency inverter system. External sensors must be connected
to the motor feedback system via the HIPERFACE DSL
®
SensorHub interface. Various
sensors or sensor networks are accessible via this interface and can be selected using
HIPERFACE DSL
®
.
PROTOCOL OVERVIEW 3
8017595/ZTW6/2018-01-15 | SICK T E C H N I C A L I N F O R M A T I O N | HIPERFACE DSL
®
13
Subject to change without notice
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