User Manual

TMCM-1270 Hardware Manual Hardware Version V1.00 | Document Revision V1.20 2017-SEP-27
12 / 21
Bus Structure
The network topology should follow a bus structure as closely as possible. That is, the
connection between each node and the bus itself should be as short as possible. Basically, it should be
short compared to the length of the bus.
Figure 9: CAN bus strcuture
Bus Termination
Especially for longer busses and/or multiple nodes connected to the bus and/or high
communication speeds, the bus should be properly terminated at both ends. The TMCM-1270 does not
integrate any termination resistor. Therefore, 120 Ohm termination resistors at both ends of the bus have
to be added externally.
Number of Nodes
The bus transceiver used on the TMCM-1270 (TJA1051) supports at least 100 nodes
under optimum conditions. Practically achievable number of nodes per CAN bus highly depend on bus
length (longer bus less nodes) and communication speed (higher speed less nodes).
CAN Bus Adapters
To quickly connect to the TMCM-1270 a PC based intergated development environ-
ment TMCL-IDE is available. Latest release can be downloaded for free from our web site: www.trinamic.com
A number of common CAN interface adapters from dierent manufactures is supported from within this
software. Please make sure to check our web site from time to time for the latest version of the software!
4.3 Motor Connector
Pin no. Pin name Description
1 A1 Motor phase A pin 1
2 A2 Motor phase A pin 2
3 B1 Motor phase B pin 1
4 B2 Motor phase B pin 2
Table 6: Motor connector pinning
©2017 TRINAMIC Motion Control GmbH & Co. KG, Hamburg, Germany
Terms of delivery and rights to technical change reserved.
Download newest version at www.trinamic.com