ESD C.2853.02, Hardware Manual, Page: 7 / 41

Table of contents
Safety Instructions ...........................................................................................................................5
1. Overview ...................................................................................................................................... 9
1.1 Module Description ................................................................................................................9
1.2 Front View with Connectors and Coding Switches ...............................................................10
2. Hardware Installation .................................................................................................................11
3. Technical Data ............................................................................................................................ 12
3.1 General Technical Data ........................................................................................................12
3.2 Microcontroller Unit ..............................................................................................................12
3.3 CAN Interface ...................................................................................................................... 13
3.4 Serial Interface .....................................................................................................................13
3.5 Software ............................................................................................................................... 14
4. Description of the Units ..............................................................................................................15
4.1 CAN ..................................................................................................................................... 15
4.2 Serial Interface .....................................................................................................................16
4.2.1 Default Setting of CAN-CBM-Bridge/2 Module ............................................................16
4.2.2 Configuration ...............................................................................................................16
4.2.3 Connecting the Serial Interfaces ..................................................................................16
4.3 Function of Coding Switches ................................................................................................17
4.4 LED Display ......................................................................................................................... 18
5. Configuration of the CAN-CBM-Bridge/2 ....................................................................................19
5.1 Serial Interface and Coding Switches ..................................................................................19
5.1.1 Commands ..................................................................................................................19
5.1.2 Change Existing Configurations ..................................................................................24
6. Connector Assignments ..............................................................................................................25
6.1 CAN Bus (X200/X250) .........................................................................................................25
6.2 RS-232 Interface (X100) ......................................................................................................26
6.3 Access line for the serial Interface .......................................................................................27
6.4 Power Supply (X101, UEGM) ..............................................................................................28
6.5 Conductor Connection/Conductor Cross Sections ...............................................................29
7. Correct Wiring of Electrically Isolated CAN Networks .................................................................30
7.1 Standards concerning CAN Wiring ......................................................................................30
7.2 Light Industrial Environment (Single Twisted Pair Cable) .....................................................31
7.2.1 General Rules .............................................................................................................31
7.2.2 Cabling ........................................................................................................................ 32
7.2.3 Termination ..................................................................................................................32
7.3 Heavy Industrial Environment (Double Twisted Pair Cable) .................................................33
7.3.1 General Rules .............................................................................................................33
7.3.2 Device Cabling ............................................................................................................34
7.3.3 Termination ..................................................................................................................34
7.4 Electrical Grounding .............................................................................................................35
7.5 Bus Length ........................................................................................................................... 35
7.6 Examples for CAN Cables ...................................................................................................36
7.6.1 Cable for light industrial Environment Applications (Two-Wire) ....................................36
7.6.2 Cable for heavy industrial Environment Applications (Four-Wire) ................................36
8. CAN Troubleshooting Guide .......................................................................................................37
8.1 Termination .......................................................................................................................... 37
8.2 Electrical Grounding .............................................................................................................38
8.3 Short Circuit in CAN Wiring ..................................................................................................38
8.4 CAN_H/CAN_L-Voltage ......................................................................................................38
8.5 CAN Transceiver Resistance Test ........................................................................................39
CAN-CBM-Bridge/2 Hardware Manual • Doc. No.: C.2853.21 / Rev. 1.4 Page 7 of 41