Table of Contents
Advertisement
Configuring
4.4
SIMOLINK drive coupling
4.4.1 Basic information
Introduction
SIMOLINK (Siemens Motion Link, SL) is a digital, serial data transfer
protocol using fiber-optic cables as data transfer medium.
The SIMOLINK drive coupling has been developed for extremely fast
and/or rigid cycle transfer of process data (setpoints, actual values,
control and status information)
• between drives (dispatcher, transceiver)
• between drives and a higher-level automation system (SL master)
• between automation systems (SL master, slave/s)
Where all of the connected nodes are synchronized (SYNC telegram) to a
common system clock.
By transferring a time-equidistant and jitter-free SYNC telegram,
Application
SIMOLINK allows high-dynamic response and all of the connected
individual drives move in absolute position synchronism (e.g. virtual
shaft).
• Max. 201 active nodes (SL master, dispatcher and transceiver,
Features
• Bus cycle:
• SYNC telegram:
• Telegram:
• Nodes read and write their data once every bus cycle.
Pause
Fig. 4-1
4-14
- SIMOVERT MASTERDRIVES MC/VC, or
- SIMOREG DC-MASTER or
- SIMATIC S7-400 station with FM 458 and EXM448-1 or
- SIMADYN D subrack with PM5/6 and ITSL
passive nodes include switches and cable concentrators)
Time between two SYNC telegrams, i.e. the circulating time in the
ringbus
All of the connected nodes are synchronized after the telegrams were
sent
32-bit word (double word), occupies one channel for each piece of
process data.
Bus cycle = system clock cycle
Telegrams for
SYNC telegram
data transfer
between the nodes
SIMOLINK telegram data transfer
Bus cycle = system bus cycle
SYNC Pause
Telegrams for
data transfer
between the nodes
Application Module FM 458 - User Manual
6DD1904-0AE0
SYNC Pause
SYNC telegram
t
Edition 12.2001
Advertisement
Table of Contents
