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Beckhoff BC9120

Ethernet TCP/IP Economy plus Bus Terminal Controller

MPN: BC9120
Category: BCxxxx, BXxxxx | Controller

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12-month warranty (new) · 3-month (used/refurbished)
30-day returns, no restocking fee on unused parts
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What is the Beckhoff BC9120?

The BC9120 Bus Terminal Controller is a Bus Coupler with integrated PLC functionality and has a bus interface for Ethernet. It is an intelligent slave and can be used as decentralized intelligence in the Ethernet system. In conjunction with the K-bus

Specifications

Programming	via TwinCAT and programming interface or Ethernet
Program memory	128 kbytes
Data memory	128 kbytes
Remanent data	2 kbytes
Persistent data	1 kbyte
Runtime system	1 PLC task
PLC cycle time	approx. 1 ms for 1,000 instructions (without I/O cycle, K-bus)
Programming languages	IEC 61131-3 (IL, LD, FBD, SFC, ST)
Online change	yes
Up/down load code	yes/yes
Number of Bus Terminals	64 (255 with K-bus extension)
Max. number of bytes fieldbus	512 byte input and 512 byte output
Digital peripheral signals	2,040 inputs/outputs
Analog peripheral signals	512 inputs/outputs
Protocol	TwinCAT ADS, Modbus TCP
Data transfer rates	10/100 Mbit/s, automatic recognition of the transmission rate
Bus interface	2 x RJ45 (2-channel switch)
Configuration	via KS2000 or Ethernet
Power supply	24 V DC (-15%/+20%)
Input current	90 mA + (total K-bus current)/4
Starting current	approx. 2.5 x continuous current
Recommended fuse	≤ 10 A
Current supply K-bus	1750 mA
Power contacts	max. 24 V DC/max. 10 A
Electrical isolation	500 V (power contact/supply voltage/fieldbus)
Weight	approx. 170 g
Operating temperature	-25…+60°C
Storage temperature	-40…+85°C
Protect. rating/installation pos.	IP20/variable
Approvals/markings	CE, CCC, UL, ATEX, IECEx, DNV
Ex marking	ATEX: II 3 G Ex ec IIC T4 Gc IECEx: Ex ec IIC T4 Gc
Design form	compact terminal housing with signal LEDs
Material	polycarbonate
Installation	on 35 mm DIN rail, conforming to EN 60715 with lock
Side by side mounting by means of	double slot and key connection
Marking	labeling of the BZxxxx series
Wiring	solid conductor (s), flexible conductor (st) and ferrule (f): spring actuation by screwdriver
Connection cross-section	s: 0.08…2.5 mm², st: 0.08…2.5 mm², f*: 0.14…1.5 mm²
Stripping length	8…9 mm
Current load power contacts	Imax: 10 A
Dimensions (W x H x D)	51 mm x 100 mm x 69 mm

BC9120: frequently asked questions

When can BC9120 be shipped?

BC9120 is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.

Can I pick up BC9120 in person?

Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.

Is express delivery available?

Yes — mention it when you request a quote for BC9120 and we'll include express shipping options in our reply.

My factory is down and I need this urgently — can you help?

For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for BC9120, subject to availability and destination.