Siemens MICROMASTER 420 Operating Instructions Manual page 83

Issue 01/05
Para-
Content
meter
2041.04 Most
Significant Digit
(hundreds):
Baudrate
The subsequent table shows all of the possible data transfer types for Transmit
PDOs. For Receive PDOs it is only possible to set as to whether the PDO can
receive in synchronism or out of synchronism with the SYNC telegram. This can
either be set using the appropriate CANopen objects or using bits 8, 9 and 10 of
parameter 2041.01 (object 27F9*sub 1).
The power-on values of the CANopen objects, that define the data transfer type of
the PDOs, can, under certain circumstances, deviate from the true values of the
objects in the inverter. This is the reason that we urgently recommend that these
objects are not saved using a "SAVE" command via object 0x1010. In fact, after
every power-on, they should be explicitly re-defined using CAN in order to avoid an
incorrect function.
Table 5-2
Transmission Type PDO Transmission
0
1 - 240
241 - 251
252
253
254
255
CANopen Option Module Operating Instructions
6SE6400-5BC00-0BP0
Comment
Baud Rate :
0 = 10 kbit/s
1 = 20 kbit/s
2 = 50 kbit/s
3 = 125 kbit/s
4 = 250 kbit/s
5 = 500 kbit/s
6 = 800 kbit/s
7 = 1 Mbit/s
8 – 9 = reserved, not permissable
Example:
required baudrate = 250 kbit/s
CAN state machine reaction to comm error = No state change
Drive state machine reaction to comm error = disable pulses (OFF2)
Least significant digit = 2
Middle digit = 3
Most Significant Digit = 4
P2041.04 = 432 decimal
Table showing the possible data transfer types
Cyclic Acyclic
X
X
reserved
Information for the CANopen master
Synchronized Asynchronous
X
X
X
X
X
X
MICRO-
MASTER
420/430 440
X X
RTR only
X
X
83