BC8150 | RS232 Bus Terminal Controllers

BC8150 | RS232 Bus Terminal Controllers

The BC8150 Compact Bus Terminal Controller with serial RS232 interface extends the Beckhoff small controller series by a cost-optimized version in a compact housing. An open serial protocol – like in the BK8x00 Bus Couplers – and the Modbus RTU/ASCII protocol are implemented. The address and the protocol are selected via the two rotary selection switches.

Controller for stand-alone applications

The Bus Terminal Controller is programmed using the TwinCAT 2 programming system conforms to 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. The inputs and outputs of the connected Bus Terminals are assigned in the PLC.

Data is exchanged with the interface on the Bus Terminal Controller with the aid of a control and status byte, through which a handshake must be executed. A serial communication function block for TwinCAT is available for this purpose.

Number of Bus Terminals 64 (255 with K-bus extension)

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 1,020 inputs/outputs

Analog peripheral signals 128 inputs/outputs

Protocol KS8000 protocol (open, serial protocol) – Modbus RTU/Modbus ASCII can be selected via address switch, serial ADS.

Data transfer rates 1.2 kbaud…38.4 kbaud

Bus interface RS232 D-sub

Power supply 24 V DC (-15%/+20%)

Input current 320 mA max.

Starting current 2.5 x continuous current

Current supply K-bus 1750 mA

Power contacts max. 24 V DC/max. 10 A

Electrical isolation 500 V (power contact/supply voltage)

Weight approx. 100 g

Operating/storage temperature -25…+60°C/-40…+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. rating/installation pos. IP20/variable

Approvals/markings CE, UL, ATEX, IECEx

Ex marking ATEX: II 3 G Ex ec IIC T4 Gc

IECEx: Ex ec IIC T4 Gc

>>> Refer to technical document: BC8x50en