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Object
Subin‐
dex
Designation
Data values
.2
Transmission
Type
0
Transmission only on switching on the encoder
1 ... 240
Cyclic transmission. Cyclic with the SYNC messages
252
Request by RTR telegram (synchronous transmis‐
sion)
253
Request by RTR telegram (asynchronous transmis‐
sion)
254
Applicationspecific triggering
255
Devicespecific triggering
.3
Inhibition Time
0 … 65.535
.4
Reserved
-
.5
Event Timer
0 … 65.535
Cyclic data transmission
For cyclic data transmission there are the following options:
•
The process data are sent with the master’s SYNC messages. The cycle is formed
from a multiple of the Sync messages. The factor can be between 1 and 240.
•
The process data are sent using an event timer to suit the specific application or
device. An event timer is available for each PDO. It can be configured between 0
and 65,535 ms.
Acyclic data transmission
For acyclic data transmission the encoder is triggered by one of the following criteria:
•
On applicationspecific/devicespecific triggering
The transmission of the PDOs is controlled by an event (CoS triggering). This event
is defined in object 2007h
•
On request (RTR telegram)
In this case another bus user (as a rule the master) requests the process data.
NOTE
The combination of cyclic and acyclic data transmission by event timer and CoS
triggering is not permitted.
Event timer and CoS triggering do not limit each other!
If an object is to be transmitted cyclically and acyclically, it must be mapped to two
different PDOs.
NOTE
In the factory the encoder’s Transmit PDOs are set to devicespecific triggering. As a
consequence the encoder outputs all Transmit PDOs once on start-up. However the
event timer is at 0. For this reason the Transmit PDOs are initially only output once.
For the cyclic or acyclic output of the Transmit PDOs by the encoder, there are the
following options:
b
Change the event timer in the objects 1800h … 1803h
b
Configure a trigger event using the CoS event handling configuration
b
Change the transmission type in the objects 1800h … 1803h
.
5
INTEGRATION IN CANOPEN
32
O P E R A T I N G I N S T R U C T I O N S | AHS/AHM36 CANopen
AHS/AHM36 CANopen Inox
8016869/1EF3/2021-12-08 | SICK
Subject to change without notice