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General information

Established in 1979. the Modbus protocol has approved the use of Ethernet with both Modbus TCP and Mod

bus/UDP. Today, Modbus TCP is an open Internet draft standard introduced by Schneider Automation to the In

ternet Engineering Task Force (IETF), the organization responsible for Internet standardization. The Modbus ser

vices 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.

• 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 to 8 ms (depending on the load on the integrated switch)

• Validity check for command sequences before execution

General information

The bus controller makes it possible to connect X2X Link I/O nodes to POWERLINK. It is also possible to operate

the X2X Link cycle synchronously 1:1 or synchronous to POWERLINK using a prescaler.

POWERLINK is a standard protocol for Fast Ethernet with hard real-time properties. The Ethernet POWERLINK

Standardization Group (EPSG) ensures that the standard remains open and is continually developed.

• POWERLINK

• I/O configuration and Firmware update via the fieldbus

• Integrated hub for efficient cabling

2 Coated modules

Coated modules are X20 modules with a protective coating for the electronics component. This coating protects

X20c modules from condensation and corrosive gases.

The modules’ electronics are fully compatible with the corresponding X20 modules.

For simplification purposes, only images and module IDs of uncoated modules are used in this data

sheet.

The coating has been certified according to the following standards:

• Condensation: BMW GS 95011-4. 2x 1 cycle

• Corrosive gas: EN 60068-2-60. Method 4. exposure 21 days

Information:

With multifunction modules, the bus controller supports only the default function model in the event

of automatic configuration by the bus controller (see the respective module description).

Automation Studio V4.3 or later can be used to easily create configuration files (e.g. DCF files). All

other function models are also supported by transferring configuration data to the bus controller (e.g.

via the master environment with an SDO download).

The evaluation license is permitted to be used to create complete configurations for fieldbus bus con

trollers at no cost.

Coated modules

Coated modules are X20 modules with a protective coating for the electronics component.

This coating protects X20c modules from condensation and corrosive gases.

The modules’ electronics are fully compatible with the corresponding X20 modules.

For simplification purposes, only images and module IDs of uncoated modules are used in this data

sheet.

The coating has been certified according to the following standards:

• Condensation: BMW GS 95011-4. 2x 1 cycle

• Corrosive gas: EN 60068-2-60. method 4. exposure 21 days

General information

Controller Area Network (CAN) is widespread in automation technology. CAN topology is based on a line structure

and uses twisted wire pairs for data transfer. CANopen is a higher-layer protocol based on CAN. The standardized

protocol offers very flexible configuration options.

This bus controller makes it possible to connect up to 253 X2X Link I/O modules to CANopen. A transition between

IP20 and IP67 protection is possible by directly connecting X20. X67 or XV modules to one another at distances of

up to 100 m each across control cabinet boundaries as required. All CANopen operating modes such as synchro

nous, event and polling are supported as well as PDO linking, life/node guarding, heartbeat, emergency objects

and much more.

• Fieldbus: CANopen

• Auto-configuration of I/O modules

• I/O configuration via the fieldbus

• Constant response times even with large amounts of data (max. 32 Rx and 32 Tx PDOs)

• Configurable I/O cycle (0.5 to 4 ms)

• Configurable transfer rate or automatic transfer rate detection

• Heartbeat consumer and producer

• Emergency producer

• 2x SDO server, NMT slave

• Simple bootup (autostart)

• Terminal access via serial interface on the X20PS9400

• Integrated terminating resistor

Protected against harsh environmental conditions – Coated X20 system

With the X20c series, B&R is setting new standards for protection against

harsh environmental conditions. These variants of the modular X20

distributed controller and I/O product line are protected against condensation

and corrosive gases by a coating on the electronics module.

These modules are even suitable for use in adverse atmospheric conditions.

The coating on the electronics module protects the components and circuit

board from the effects of condensation and corrosive gases. The effectiveness

of protection against condensation is checked using the test specified in BMW

GS 95011-4. and protection against corrosive gases using the 4-part corrosive

gas tests specified in EN 60068-2-60. test method 4. The tests are completed

both in the company testing lab, which is accredited in accordance with EN

ISO/IEC 17025:2007. and at certified external testing facilities.

There, the products undergo further testing to check their durability – even

beyond standard requirements.

Independent of operating conditions

The X20 family with coated circuit boards is completely compatible with existing

X20 models with respect to functionality. Using a unique module ID, the application

software can differentiate these devices from standard models.

With the introduction of this line, B&R has proven for the third time in rapid succession

– after the general expansion of the operating temperature range to -25 to +60°C

and certification for maritime applications from Germanischer Lloyd (GL)

– that they are dedicated to increasing their customers’ return on investment by

increasing the service life of the X20 system regardless of environmental conditions.