Possibilities of Connection¶
Mounting on Terminal Units TU509 or TU510
The assignment of the 9-pole female D-SUB connector for the CANopen® signals
| 1 | — | Reserved | |
| 2 | CAN- | Inverted signal of the CAN Bus | |
| 3 | CAN_GND | Ground potential of the CAN bus | |
| 4 | — | Reserved | |
| 5 | — | Reserved | |
| 6 | — | Reserved | |
| 7 | CAN+ | Non-inverted signal of the CAN Bus | |
| 8 | — | Reserved | |
| 9 | — | Reserved | |
| Shield | Cable shield | Functional earth |
Bus Termination
The data line ends must be equipped with 120-Ohm bus terminating resistors. Normally, the resistors are integrated in the interface connectors.
Figure: CANopen® interface, bus terminating resistors at the line ends
Note
The earthing of the shield should take place at the switch-gear cabinet, see System-Data AC500 AC500 System Data and System Construction.
Mounting on Terminal Units TU517 or \ TU518
The assignment of the terminals 1.0 - 1.9:
| Terminal | Signal | Meaning |
|---|---|---|
| 1.0 | CAN+ | Non-inverted signal of the CAN Bus |
| 1.1 | CAN+ | Non-inverted signal of the CAN Bus |
| 1.2 | CAN- | Inverted signal of the CAN Bus |
| 1.3 | CAN- | Inverted signal of the CAN Bus |
| 1.4 | Term+ | CAN bus termination for CAN+ (for bus termination, Term+ must be connected with CAN+) |
| 1.5 | Term+ | CAN bus termination for CAN+ (connecting alternative for terminal 1.4) |
| 1.6 | Term- | CAN bus termination for CAN- (for bus termination, Term- must be connected with CAN-) |
| 1.7 | Term- | CAN bus termination for CAN- (connecting alternative for terminal 1.6) |
| 1.8 | CAN-GND | Ground potential of the CAN bus |
| 1.9 | CAN-GND | Ground potential of the CAN bus |
At the line ends of a bus segment, termination resistors must be connected. If using TU517/TU518, the bus termination resistors can be enabled by connecting the terminals Term+ and Term- to the data lines CAN+ and CAN- (no external termination resistors are required, see illustration below).
The following figures shows the different possibilities of connection for the CANopen® Bus Module:
Note
If using TU517/TU518, note that the termination resistors are not located inside the TU, but inside the Bus Module CI581-CN. I. e. when removing the device from the TU, the bus termination resistors are not connected to the bus any more. The bus itself will not be disconnected if a device is removed.
Note
The earthing of the shield should take place at the switch-gear cabinet, see System-Data AC500 AC500 System Data and System Construction.