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Short description
Bus controller Modbus TCP/UDP slave
General information
B&R ID code 0xEA9F
Status indicators Module status, bus function
Diagnostics
Module status Yes, using status LED and software
Bus function Yes, using status LED and software
Power consumption
Bus 2 W
Additional power dissipation caused by actuators (resistive) [W] -
Certifications
CE Yes
ATEX Zone 2, II 3G Ex nA nC IIA T5 Gc
IP20, Ta (see X20 user's manual)
FTZÚ 09 ATEX 0083X
UL cULus E115267
Industrial control equipment
EAC Yes
Interfaces
Fieldbus Modbus TCP/UDP slave
Variant 2x shielded RJ45 (switch)
Line length Max. 100 m between 2 stations (segment length)
Transfer rate 10/100 Mbit/s
Transfer
Physical layer 10BASE-T/100BASE-TX
Half-duplex Yes
Full-duplex Yes
Autonegotiation Yes
Auto-MDI/MDIX Yes
Min. cycle time
Fieldbus 1 ms
X2X Link 500 μs
Synchronization between bus systems possible No
Electrical properties
Electrical isolation Modbus isolated from bus and I/O
Operating conditions
Mounting orientation
Horizontal Yes
Vertical Yes
Installation elevation above sea level
0 to 2000 m No limitation
>2000 m Reduction of ambient temperature by 0.5°C per 100 m
Degree of protection per EN 60529 IP20
Ambient conditions
Temperature
Operation
Horizontal mounting orientation -25 to 60°C
Vertical mounting orientation -25 to 50°C
Derating -
Storage -40 to 85°C
Transport -40 to 85°C
Relative humidity
Operation 5 to 95%, non-condensing
Storage 5 to 95%, non-condensing
Transport 5 to 95%, non-condensing
Mechanical properties
Note Order terminal block 1x X20TB12 separately
Order 1x power supply module X20PS9400 or X20PS9402 separately
Order 1x bus base X20BB80 separately
Spacing 37.5 +0.2 mm
Material number:
X20BC0087-10
Description:
  • Fieldbus: Modbus/TCP, Modbus/UDP
  • I/O configuration via the fieldbus
  • DHCP-capable
  • Bootp-capable
  • Integrated double switch for efficient cabling
  • Configurable I/O cycle (0.5 to 4 ms)
  • Response time: <1 - 8 ms (depending on the load on the integrated switch)
  • Validity check for command sequences before execution
  • Producer mode

Established in 1979, the Modbus protocol has approved the use of Ethernet with both Modbus TCP and Modbus UDP. Today, Modbus TCP is an open Internet draft standard introduced by Schneider Automation to the Internet Engineering Task Force (IETF), the organization responsible for Internet standardization. The Modbus services and object model have been preserved since the original version and left unchanged for use with the TCP/IP transmission medium.

Modbus/UDP differs from Modbus TCP in that it uses connectionless communication via UDP/IP. The advantages of faster and easier communication with UDP/IP also brings with it the disadvantage of requiring error detection and correction in the application layer.

This bus controller makes it possible to connect X2X Link I/O nodes to Modbus via Ethernet. The bus controller can be operated on B&R controllers through the use of Automation Studio or on third-party systems with Modbus TCP or UDP master functionality.

Mandatory Accessories
System modules for bus controllers
X20BB80 X20 bus base, for X20 base module (BC, HB, etc.) and X20 power supply module, X20 end plates (left and right) X20AC0SL1/X20AC0SR1 included
X20PS9400 X20 power supply module, for bus controller and internal I/O power supply, X2X Link power supply
X20PS9402 X20 power supply module, for bus controller and internal I/O power supply, X2X Link power supply, supply not electrically isolated
Terminal blocks
X20TB12 X20 terminal block, 12-pin, 24 VDC keyed
Automation Studio HW Upgrades Version (Date) Download
V4.3 HW Upgrade (X20BC0087-10) EXE / 699 KB
Certificates Version (Date) Download
E115267 UL CoC X20 PDF / 1 MB
FTZU 09 ATEX 0083X PDF / 697 KB
Documentation Version (Date) Download
Data sheet X20BC0087-10 PDF / 177 KB
Modbus/TCP Bus Controller User's manual PDF / 4 MB
X20 System User´s Manual PDF / 50 MB
Fieldbus equipment description files Version (Date) Download
Modbus Mapping Tool ZIP / 160 KB
ModbusTCP Toolbox ZIP / 4 MB
M-CAD (Mechan. Templates) Version (Date) Download
3D File STEP/DXF X20BC and X20IF Module ZIP / 1 MB

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