System bus (can) for lenze plc devices, Can system blocks – Lenze DDS System bus CAN for PLC User Manual

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System bus (CAN) for Lenze PLC devices

CAN system blocks

7.7

CAN_Synchronization (node number: 102)

7−25

PLC−Systembus EN 2.0

Synchronisation cycle

The controllers/PLCs receive the sync telegram/signal and compare the time between two
LOW−HIGH edges of the signal to the specified cycle time (C1121).

Code

LCD

Possible settings

IMPORTANT

Lenze

Selection

[C1121] Sync cycle

{1 ms}

13 Synchronisation cycle

Definition of the cycle time of the
sync telegram/signal.

Parameterisation is only
required for the slave!

The value set in C1121 is the time between two sync telegrams/signals of the master.

Phase displacement

Code

LCD

Possible settings

IMPORTANT

Lenze

Selection

[C1122] Sync phase

0.460

{0.001 ms}

6.5 Synchronisation phase

Phase shift between the sync
telegram/signal and the start of the
internal control program.

Monitoring the synchronisation (time slot)

The variable CAN_bSyncInsideWindow_b can be used for monitoring the synchronisation.

Code

LCD

Possible settings

IMPORTANT

Lenze Selection

[C1123] Sync window

{0.001 ms}

6.5 Synchronisation window

If the sync telegram/signal sent by
the master is in this "time slot",
CAN_bSyncInsideWindow_b
switches to TRUE.

Sync signal

Sync window

SyncCycle

Fig. 7−8

"Time slot" for the LOW−HIGH edges of the sync signal