| BECKHOFF BX Controller: Parameterization and Commissioning |
The SSB (Smart System Bus) is a CANopen-based sub-bus system. It is a CANopen master with limited functionality. CANopen slaves may be connected to this interface for reading or writing distributed I/Os. Parameterization SDOs (service data objects) can be sent to the slave via a start-up window.
The SSB is configured via the TwinCAT System Manager (see TwinCAT config). The configuration is then transferred to the BX Controller via ADS.
| SSB | Data |
|---|---|
| Max. number of slaves | 8 |
| Max. number of PDOs | 32 RxPODs / 32 TxPDOs |
| Baud rate | 10 kBaud to 1 MBaud |
| Permitted slave addresses | 1 to 64 |
The sync telegram is transferred depending on the PLC task time. If a task time of 20 ms is set, the sync telegram is also sent every 20 ms (asynchronous with the PLC run time). The sync telegram is only generated when a device requires it and is configured accordingly.
The sync telegram is supporting from firmware 1.12.
Guarding is supported and is sent after a configurable interval.