60
Manual – MOVIDRIVE® MDX60B/61B Communication and Fieldbus Unit Profile
5
Other unit functions via CAN interfaces
CAN Interfaces of MOVIDRIVE® B
5.5
Other unit functions via CAN interfaces
In addition to the exchange of process and parameter data between controller and
MOVIDRIVE
®
B, the CAN interfaces can be used for other additional functions, such as
IPOS
plus®
, master/slave operation, or internal synchronous operation (ISYNC).
5.5.1
Using CAN interfaces for master/slave operation
Master/slave operation is only possible via CAN 1 (SBus 1). In this case, the
MOVILINK
®
profile must be activated in parameter P880.
Connection
check
If communication takes place via SBus,
P883 SBus timeout interval
applies. If
P883
SBus timeout interval
is set to 0, data transmission via SBus will not be monitored. For
a detailed description of the setting and operation of the master/slave function, refer to
chapter 4.4.1.
Example
Master/slave operation can be executed via SBus 1. Every millisecond, the master
sends setpoint and control word to the slaves via SBus group telegram.
The same SBus group address (P882) must be set for master and slaves. The valid
address range is 0 - 63. Permitted baud rates for master/slave operation are 500 kBaud
and 1000 kBaud (P884). Make sure that the baud rate is the same for master and
slaves.
The master uses SBus group telegrams for master/slave communication. Therefore, the
master cannot be controlled by other stations via SBus group telegrams as this would
disturb arbitration on the CAN bus.
TIP
P882 SBus group address
must be set to the same value for master and slave. For
operation via system bus (e.g. master/slave operation), the bus terminating resistors at
the start and end of the system bus must be activated (S12 = ON). If the sending of
slave setpoints via SBus is set using parameter P750, MOVIDRIVE
®
can respond to
requests (process data telegrams) of another SBus master (P100/101
≠
SBus (CAN))
via this SBus interface.
64768AEN
Unit 1 - MASTER
P100 setpoint source
P101 control signal source
P882 SBus group address
P750 Slave setpt.
Bipol./fixed setpt.
terminal
1
Unit 2 - SLAVE
P100 setpoint source
P101 control signal source
P882 SBus group address
P750 Slave setpoint
Master SBus
terminal
1
System bus (SBus)
speed (SBus)
off
Unit 3 - SLAVE
P100 setpoint source
P101 control signal source
P882 SBus group address
P750 Slave setpoint
Master SBus
terminal
1
off
Summary of Contents for MOVIDRIVE MDX60B
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