Wireless serial data transmission via Bluetooth (TM)
Serial data transmission via Bluetooth
PSI-WL Bluetooth(TM) converter for
remote diagnostics, remote monitoring, remote programming, alarm signaling, etc.
The new Bluetooth converters make complex data connections with mobile devices using flexible conduits, sliprings or other cable solutions a thing of the past.
The new converter, PSI-WL-RS232-RS485/BT, provides wireless transmission for the RS-232, RS-422 and RS-485 2-conductor serial interfaces. Time-consuming maintenance involving high costs is unnecessary. This simple cable substitute offers you a fast, flexible, and inexpensive solution for your programming or diagnostics connection to a machine, controller, or when connecting a new device in an existing bus system (e.g. Modbus, Profibus, etc.). This represents considerable savings in the case of temporary connections, where a data connection is only needed for a short period.
With the PSI-WL Bluetooth(TM) converters, Phoenix Contact is able to offer you "Easy Cable Replacement"
- Less installation work
- Fast startup
- Fast setting up of connection
- High data rate
- High transmission reliability
- Industrial capability
with medium ranges.
Interference-free radio standard
Bluetooth fulfills the requirements of a radio system in an industrial environment, makes use of the 2.4 GHz ISM bandwidth, and is an international, license-free, open industrial standard, using radio to allow wireless voice or data communication over medium ranges between two devices. It serves as a cable replacement for point-to-point connections and also supports ad hoc networks with up to eight devices.
As opposed to WLAN (DSSS Direct Sequence Spread Spectrum), Bluetooth uses the Frequency Hopping Spread Spectrum (FHSS). This was originally a procedure used by the military, is very difficult to tap into, and uses a total of 79 channels. The individual channel changes every 0.625 milliseconds in agreement between the transmitter and receiver. This amounts to some 1600 frequency hops per second. This compensates for interferences on individual channels and prevents unauthorized intervention from outside, since the hop sequence is not known to outsiders.
Extra data security is provided by the password protection option for the devices, or by making the devices invisible for other devices after the connection has been established.
Extensive functions integrated
The Bluetooth converter PSI-WL-RS232-RS485/BT offers the following functions:
- Wireless transmission of the RS-232, RS-422 and RS-485 2-conductor serial interfaces.
- Transmission rates that can be set up to 187.5 kbps, allowing them to be adapted to the transmission rate of the existing system.
- Spatial extent of the radio cell can be set to the individual requirements. Using the software tool, it is possible to set the transmission capacity in a wide range from -28 dBm to 20 dBm (100 mW).
- Multiple stage safety model:
Access denial for foreign devices
Hiding devices from foreign devices.
A combination of the individual mechanisms is also possible.
- Simple configuration option to satisfy individual requirements by using the free configuration software supplied.
- Mounting on EN mounting rail.
- Ideal positioning of the antenna due to the external antenna connection. Depending on the system concept, ranges of up to 150 m (omni-directional antenna) or more (directional antenna) can be attained.
- Integrated Bluetooth path diagnostics for evaluating the signal quality. As soon as the radio link is established, the quality of the connection can be read off in the form of a bar graph.
- A choice of 24 V AC or DC supply via COMBICON screw terminal block.
- Redundant voltage supply via system T-bus.
- High-quality 3-way electrical isolation.
- International certification (Europe, USA, Canada, etc.)
Point-to-point without termination device addressing (RS-232, RS-422, etc.)
Direct programming connection between a laptop and a PLC.
Data connection between a foreign device with integrated Bluetooth interface (PDA, mobile phone, etc.) and an industrial controller.
Connection between a mobile operator interface and an industrial controller.
Point-to-point with termination device addressing (RS-485 2-conductor)
Linking a bus device into an existing bus system, e.g. Modbus, Profibus etc.
Networking for automation components. Up to seven Bluetooth slaves can be connected to a Bluetooth master.