www.balluff.com
7
4
Basic knowledge
4.1.
Product
description
Balluff Network Interface BNI PBS-...:
Used for connecting sensors/actuators to a Profibus-DP network.
Sensors/actuators can be connected through 4 standard I/O ports.
Connection to Profibus using 2 × M12×1 round connectors.
Electrical power 24 V DC using 7/8“ round connector.
The main areas of application are:
In the industrial area as an interface between sensors/actuators and a Profibus.
When using "intelligent" sensors and actuators which process information in
addition to the actual process signal (e.g. diagnostics information)
4.2.
Profibus
Open bus system for process and field communication in cell networks with a low number of
stations as well as for data communication per IEC 61158/EN 50170. Automation Devices
such as PLC's, PC's, control and monitoring Devices, sensors or actuators can
communicate over this bus system.
Variants:
Profibus DP for fast, cyclical data exchange with field Devices,
Profibus PA for applications in process automation in the intrinsically safe area,
Profibus FMS for data communication between automation Devices and field
Devices.
4.3.
IO-Link
IO-Link is defined as a standardized point-to-point connection between sensors/actuators
and the I/O module. An IO-Link sensor/actuator can send additional communication data
(e.g. diagnostics signas) in addition to the binary process signas over the IO-Link interface
.
Compatibility with standard I/O:
IO-Link sensors/actuators can be connected to existing I/O modules.
Sensors/actuators which are not IO-Link capable can be connected to an IO-Link
module.
Standard sensor/actuator cable can be used.
Key technical data:
Serial point-to-point connection,
Communication as add-on to standard I/O.
Standard I/O connection technique, unshielded, 20m cable length.
Communication using 24V pulse modulation, standard UART protocol.
Maximum current draw: per sensor 200 mA/per actuator 1,6 A.
