Function: Isochronous Mode - Siemens SIMATIC ET 200SP Manual

Modes and Functions

3.13 Function: Isochronous mode

3.13 Function: Isochronous mode
Note
For basic information on isochronous mode, refer to the SIMATIC PROFINET with STEP 7
(https://support.industry.siemens.com/cs/mdm/49948856?c=73850691339&t=1&s=PROFIN
ET in STEP
Requirements
You will require the following for the TM Pulse 2x24V in isochronous mode:
● A CPU that supports isochronous mode
● An IM (interface module) that supports isochronous mode
● Engineering software, such as TIA portal or STEP 7, to parameterize isochronous mode
Response of the TM Pulse 2x24V
Depending on the system parameter assignment, the TM Pulse 2x24V works in either
non-isochronous or isochronous mode.
In isochronous mode
● The output sequences are started at the moment T
used.
● Data communication between the PROFINET controller and TM Pulse 2x24V is
isochronous to the cycle.
● All 12 bytes of a channel's control interface are consistent (24 bytes for both channels).
● All 8 bytes of a channel's feedback interface are consistent (16 bytes for both channels).
● In the PWM operating mode, the period duration is synchronized to the application cycle
time (PROFINET). See the PWM chapter (Page 25) for details.
86
7&lc=en-US) manual.
, when only the software enable is
O
Technology module TM Pulse 2x24V (6ES7138‑6DB00‑0BB1)
Manual, 09/2015, A5E35061186-AA