Siemens SIMOTRAS 6SG7050, Operating Instructions Manual

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01.04 Start-up
SIEMENS AG 6SG7000-0BA76
7-47
SIMOTRAS HD Operating Instructions
4
Process data are connected to the SIMOLINK board through assignment of the
corresponding connectors and/or binectors to telegram addresses and channel numbers
(see Section 8, Sheet Z122).
Example:
U749.01 = 0.2 means that the values of node 0 / channel 2 are read as word1
(K7001) and word2 (K7002)
U740.01 = 1
U751.01 = 32
U751.02 = 33 means that node 1 in channel 0 transmits status word 1 (K0032) as
word1 and status word 2 (K0033) as word2
Changes to the settings of the receive data parameters do not take effect until the electronics
power supply is switched on again.
WARNING
Changing parameters U740, U745, U746 and U749 causes re-initialization,
resulting in an interruption in communication with all drives linked to the
SIMOLINK bus.
SIMOLINK ( S iemens M otion L ink) is a digital, serial data transmission protocol which uses fiber
optics as a transmission medium. The SIMOLINK drive link has been developed to allow a fast,
cyclic exchange of process data (control information, setpoints, status information and actual
values) via a closed ring bus.
Parameter data cannot be transferred via SIMOLINK.
SIMOLINK consists of the following components:
SIMOLINK
Master
Active bus node as interface to higher-level automation systems (e.g. SIMATIC M7 or
SIMADYN)
SIMOLINK Board (
SLB )
Active bus node as interface for drives on SIMOLINK
SIMOLINK
Switch
Passive bus node with switching function between two SIMOLINK ring busses. The
separating filter and concentrator are identical in terms of hardware, but perform different
functions. Separating filters are used to reverse the signal flow, e.g. in order to link the nodes
on one ring bus to another ring bus after the failure of their master. Concentrators allow ring
segments to be star-connected to form a complete ring.
Fiber optic cables
Transmission medium between the SIMOLINK nodes. Glass or plastic fiber optic cables can
be used. The permissible maximum distances between adjacent nodes in the ring differs
depending on the type of fiber optic used (plastic: max 40m, glass: max. 300m).
SIMOLINK is a closed fiber optic ring. One of the nodes on the bus has a dispatcher function
(SIMOLINK master or SLB parameterized as the dispatcher). This dispatcher node is identified by
node address 0
and controls communication on the bus. Using SYNC telegrams, it supplies the
common system clock cycle for all nodes and sends telegrams in ascending sequence of telegram
addresses and channel numbers in the task table. The
task table contains all telegrams which are
transmitted cyclically in normal data interchange.