Baumer BA_DSRT_22DJ - Handbuch (Seite 6)

Manual_CANopen_StrainLink_EN_V3_05.doc 6/65 Baumer
22.07.11/dam Frauenfeld, Switzerland
2 Project engineering
2.1 Maximum system extent
To construct an operational bus, there must be at least one master (or parent system) on the bus. This
master may be a PLC controller or a PC with an appropriate CAN board. Every CANopen strain link
represents one active CAN node.
One bus string with one master of the CAN network can have a maximum of 127 users. Every user has its
own address.
You can find the factory defaults of this sensor in Chapter 6.2
Parameter Handling (save, load default) .
You must absolutely comply with the permissible bus and stub line lengths given in Table 1.
The maximum permitted total line length and total stub length
•
is dependent on the baud rate and
•
can be divided into several segments or individual stubs.
Table 1
Baud rate [Kbit/s] 10 20 50 100 125 250 500 800 1000
Total bus length 5,000 m 3,000 m 1,000 m 500 m 400 m 200 m 75 m 30 m 25 m
Total stub length 1,360 m 875 m 350 m 175 m 140 m 70 m 35 m 20 m 17 m
Individual stub length 270 m 175 m 70 m 35 m 28 m 14 m 7 m 4 m 3 m
Maximum total bus length (with 120 ohm termination resistor) and maximum stub length (without termination
resistor) as a function of the baud rate