The Bus Terminal Controller BC2000 is a Bus Coupler with integrated PLC functionality and has a fieldbus interface for the Lightbus. The BC2000 is an intelligent slave and can be used as a non-central intelligence in the Lightbus system. One unit consists of the Bus Terminal Controller, any number of terminals between 1 and 64, and a bus end terminal. The Bus Terminal Controller is programmed using the TwinCAT programming system according to IEC 61131-3. The configuration/programming interface of the BC2000 is used to load the PLC program. If the software PLC TwinCAT is in use, the PLC program can also be loaded via the fieldbus.
The inputs and outputs of the connected Bus Terminals are assigned in the Bus Terminal Controller’s default setting. Each Bus Terminal can be configured in such a way that it exchanges data directly through the fieldbus with the higher-level automation device. Similarly, pre-processed data can be exchanged between the Bus Terminal Controller and the higher-level controller via the fieldbus.
Controller for distributed signal processing
The programming system TwinCAT for the BC2000 operates, independently of the manufacturer, in accordance with IEC 61131-3. The PLC programs can be written in five different programming languages (IL, FBD, LD, SFC, ST). In addition, TwinCAT offers extensive debug functionalities (breakpoint, single step, monitoring, …), which facilitate commissioning. It is also possible to perform adjustment and measurement of the cycle time.
| PLC data | Lightbus | BC2000 |
| Programming | TwinCAT (via programming interface or fieldbus) |
| Program memory | 32/96 kbytes |
| Data memory | 32/64 kbytes |
| Remanent data | 512 bytes |
| Runtime system | 1 PLC task |
| PLC cycle time | approx. 3 ms for 1,000 instructions (without I/O cycle, K-bus) |
| Programming languages | IEC 61131-3 (IL, LD, FBD, SFC, ST) |
| Online change | – |
| Technical data | BC2000 |
| Number of Bus Terminals | 64 |
| Max. number of bytes fieldbus | 512 byte input and 512 byte output |
| Max. number of bytes process image | 512 byte input and 512 byte output |
| Digital peripheral signals | 512 inputs/outputs |
| Analog peripheral signals | 128 inputs/outputs |
| Configuration possibility | via KS2000 or fieldbus |
| Data transfer rates | 2.5 Mbaud |
| Bus interface | 2 x standard fibre optic connector Z1000 (plastic fibre), Z1010 (HCS fibre) |
| Power supply | 24 V DC (-15 %/+20 %) |
| Input current | 70 mA + (total K-bus current)/4, 500 mA max. |
| Starting current | approx. 2.5 x continuous current |
| Current supply K-bus | 1,750 mA |
| Power contacts | 24 V DC max./10 A max. |
| Electrical isolation | 500 V (power contact/supply voltage) |
| Weight | approx. 170 g |
| Operating/storage temperature | 0…+55 °C/-25…+85 °C |
| Relative humidity | 95 %, no condensation |
| Vibration/shock resistance | conforms to EN 60068-2-6/EN 60068-2-27 |
| EMC immunity/emission | conforms to EN 61000-6-2/EN 61000-6-4 |
| Protect. class/installation pos. | IP 20/variable |
| Approvals | CE, UL, Ex |
| Accessories | |
| KS2000 | configuration software for extended parameterisation |
| TwinCAT PLC | programming system conforms to IEC 61131-3 |
| Cordsets | cordsets and connectors |
| FC200x-0000 | PC Fieldbus Cards with PCI interface |
| C1xxx | PC Fieldbus Cards with ISA, VME bus, S5 interface |
| Ordering information | Description |
| BC2000 | Lightbus Bus Terminal Controller for up to 64 Bus Terminals |
| BK20x0 | Lightbus Bus Coupler |
| System | |
| Lightbus | For further Lightbus products please see the system overview |
