BECKHOFF BC7300 - Manual (Page 14)

Basic Principles
BC7300 14
Technical data
The MODBUS – the fieldbus-specific electrical data is listed in this section.
The following table gives an overview of all the data:
Technical data BC7300
Supply voltage 24 V DC
Input current 70mA +
(total K-Bus current)/4
500 mA max.
Power-on surge 2.5 x steady operating current
K Bus supply current up to 1750 mA max.
Configuration facility via KS2000 or the controller
Number of Bus Terminals 64
Digital peripheral signals 256 inputs/outputs
Analog peripheral signals 128 inputs/outputs
Baud rate From 150 baud to 38400 baud
Protocol RTU and ASCII
Bus connection D-Sub RS 485
9-pin
Voltage of the
power contact
24 V DC / AC max.
Power contacts current
drawn
10 A max.
Electric strength 500 Veff (power contact / supply voltage / fieldbus)
none
Typical weight 170 g
Operating temperature 0°C ... +55°C
Storage temperature -20°C ... +85°C
Relative humidity 95% without dew formation
Vibrations/Shock resistance conforms to IEC 68-2-6 / IEC 68-2-27
EMC resistance burst / ESD
conforms to EN 50082 (ESD, Burst) / EN 50081
Installation position any
Type of protection IP20
PLC data
Programmability via programming interface (TwinCAT BC/TwinCAT)
Program size approx. 3000 PLC statements
Program memory 32 kbytes / 96 kbytes
Data memory 32 kbytes / 64 kbytes
Remanent flags 512 bytes
Runtime system 1 PLC task
PLC cycle time approx. 3 ms for 1000 instructions (including K-Bus I/O cycle)
Programming languages IL, LD, FBD, SFC, ST
Station addresses selectable to 99 via DIP switch
0 Programming mode and configuration mode
1 – 99 Slave address
Baud rate in programming
mode
19,200 baud, 8 data bits, even parity, one stop bit
Current consumption on
the K-Bus
The Bus Terminals require energy for the operation of the K-Bus
electronics, and this is supplied by the Bus Coupler. Find the current
consumption of the K-Bus from the catalogue, or from the appropriate data
sheets for the Bus Terminals. Consider the maximum output current of the
Bus Coupler that is available for supply of the Bus Terminals. A special
power supply terminal (KL9400) can be inserted at any location to insert
more power into the K-Bus. Refer to Beckhoff’s technical support
department regarding the use of a power supply terminal.