DESIGO PX

BACnet Router for LONWORKS Ethernet/IP
BACnet Router for LONWORKS Ethernet/IP BBMD BACnet Broadcast Management Device Communication statistics BACnet device object Connection for tool and MMI

PXG80-N

CA1N9260en_March 2009

Building Technologies

Application The BACnet router is always used where DESIGO PX automation stations must communicate via Ethernet/IP. The automation stations are connected with each other via LONWORKS and form a segment. Local LONWORKS segments are connected via Ethernet/IP (backbone). A BACnet router is required for each LONWORKS segment.
BACnet over Ethernet/IP (backbone)

PXM20 BACnet over LON

PXG80-N BACnet over LON

PXC64-U with PXM20

P-bus modules
Functions The BACnet router transmits the BACnet protocol from LONWORKS to Ethernet/IP. This means that the two sides form a BACnet network each. Only those packages are transmitted which must go from one BACnet network to another. Local broadcast messages are limited to the local network whereas global broadcasts are not limited. BBDM In addition, the BACnet router supports the functionality of the BBMD (BACnet Broadcast Management Device) in order to distribute the BACnet broadcast messages across the IP routers. The BACnet router contains a device object and can be operated by a BACnet client (PXM20, DESIGO TOOLSET / XWORKS plus or DESIGO INSIGHT). The current operating state, date and time as well as the statistics for the sent packages are stored in the device object. These values can be read from the device object via simple read services.

Design

The compact construction enables the BACnet routers to be used in highly confined spaces. A BACnet router is especially suitable for compact control panels or buildings services systems with integrated control panels.
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Description Metal housing Front cover LED indicators Printed circuit board Upper terminals for power supply and RJ45 connection for Ethernet Lower terminals and RJ45 for LONWORKS connection Slider for mounting on DIN rails
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Upper LED display

00406 BACnet over Ethernet/IP STATUS SERVICE TX RX INFO

LED RUN

Colour Green
Activity Continuously off Continuously on Short period off

Meaning/

problem solution
No supply present. Check supply. Supply ok; firmware functions ok. Restart of BACnet router. Occurs periodically BACnet router must be replaced. Everything ok. Hardware fault detected during self-test. BACnet router must be replaced. Lithium battery empty. Replace battery (see maintenance guidelines). No valid firmware present. Reload firmware. Everything ok. Network fault, no link pulse from hub. Check Ethernet link from BACnet router to hub. IP address not configured. BACnet router must be configured with DESIGO TOOLSET / XWORKS plus.

STATUS

Continuously off Continuously on Flashing slowly Quick flashes

SERVICE

Continuously off Continuously on Flashing

TX RX INFO

Yellow Yellow Red
Flashing Flashing Continuously off Continuously on
Sends Ethernet/IP packages. Receives Ethernet/IP packages. Everything ok. Detects communication loop; correct functioning cannot be guaranteed. Check network topology and re-configure BACnet router with DESIGO TOOLSET / XWORKS plus.

Flashing

Router table or device object not configured. BACnet router must be configured with DESIGO TOOLSET / XWORKS plus.
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BACnet over LonTalk SERVICE TX RX

LED SERVICE

Colour Red
Activity Continuously off Special flashing pattern: Continuously on
Everything ok. The BACnet router has received a wink command which can be used during commissioning for the unique identification (see commissioning instructions below). The LONWORKS connection (Neuron chip) is not ready to use. BACnet router must be configured with DESIGO TOOLSET / XWORKS plus. If the LED is still on after the re-configuration the
LONWORKS connection must be faulty.
The BACnet router must be replaced. Flashing regularly: LonTalk address not configured. BACnet router must be configured with DESIGO TOOLSET / XWORKS plus. LED short period on TX RX Yellow Yellow Flashing Flashing Restart of Neuron chip. Sends LonTalk packages. Receives LonTalk packages.

Engineering notes A static IP address, a subnet mask and a default gateway must be assigned to each BACnet router during commissioning. Normally, the network administrator is responsible for the management of these addresses. DHCP (Dynamic Host Configuration Protocol) is not supported. It must also be noted that BACnet communicates on IP via a static UDP port number. The UDP port number is determined during commissioning. When using a firewall it is necessary to enable the relevant IP address and the UDP port number. Limitations Max. ten BACnet routers can be configured as BBMDs. This means that one site cannot comprise more than ten IP subnets which are separated by IP routers. Max. ten foreign devices can be entered per BBMD. A management station in a remote IP segment is a typical foreign device. Mounting instructions The BACnet router can be snap-mounted on DIN rails or directly screwed to a mounting plate.

Caution!

In order to prevent equipment damage and/or personal injuries always follow local safety regulations and the required safety standards.
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Installation It is essential to adhere to the guidelines described in the mounting and installation manual (CA1Z9251). The Ethernet connection to the next hub must, for example, not be greater than 100 m.
Commissioning notes The router is commissioned and configured on the LONWORKS side using the DESIGO TOOLSET / XWORKS plus. During the commissioning the addresses and parameters of LonTalk, UDP/IP and BACnet are added. In addition, the network numbers of the directly connected BACnet networks are parameterised and the BBMD table is loaded. For a unique identification of the BACnet router in the LONWORKS network press the service pin on the printed circuit board. Alternatively, a wink command can be sent to the BACnet router. After receiving a wink command the BACnet router responds with a special flashing pattern (lower SERVICE LED). Special flashing pattern for wink command After receiving the wink command the lower SERVICE LED flashes as follows:

21s 5 Hz 5 Hz

The SERVICE LED lights up for 2 seconds, flashes for 1 second in 5 Hz pulses, then lights up again for 2 seconds, etc. until 21 seconds have passed.
After configuration, the red LEDs must not be on or flashing.

Lithium battery

Force Firmware Download button Service pin

Delete configuration

When a BACnet Router is no longer required, the configuration should be deleted. This can be done in two ways: a) Delete the configuration with DESIGO TOOLSET / XWORKS plus or. b) Delete the configuration directly in the BACnet Router. Procedure: 1. Switch off the power supply to the router 2. Before switching on again, press the Force Firmware Download button, then switch on the power again, keeping the button depressed until the INFO-LED starts flashing. Result: 1. The configuration is deleted and the diagnostic data is reset. 2. Both the SERVICE-LED and the INFO-LED flash.
PXG80-N BACnet router for LONWORKS Ethernet/IP CA1N9260en_March 2009
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Maintenance Lithium batteries usually have a life span of at least four years. The STATUS LED flashes when the battery is low. In order to prevent the loss of statistical data or date and time always ensure that the power supply is on whilst changing the battery. To change the battery pull down the front cover.
To prevent hardware damage by electrostatic discharge (ESD), a wrist strap with earth cable must be used during the battery change.
Disposal The unit contains electric and electronic components and must not be disposed of with domestic waste. Lithium battery, printed circuit board and housing must be disposed of separately The local and actual regulations must be observed.
Operating notes A configured BACnet router supports the ICMP (Internet Control Message Protocol) ping command. Other ICMP messages and SNMP (Simple Network Management Protocol) are not supported. The network load on the LONWORKS side depends on the data exchange of the connected automation stations and operator units. The bus traffic on the IP side is generated by the management stations on Ethernet/IP or superposed data exchange (Ethernet/IP as backbone). BACnet broadcast messages generate further bus traffic. Broadcast messages are passed on to the BBMDs and foreign devices. If the Ethernet/IP network is used by other systems (e.g. data processing) these loads must be taken into account. In comparison with the bus load of the BACnet devices the bus load of data processing systems is higher by several factors.
BACnet device object properties The following properties represent the current operating state of the BACnet router. They can be read by a BACnet client via the Read Property service. Router table and device object are correctly configured. Router table or device object are not correctly configured. BACnet router must be configured with DESIGO TOOLSET / XWORKS plus.

System_Status OPERATIONAL NON_OPERATIONAL Reliability
NO_FAULT_DETECTED NO_OUTPUT
Everything ok. The LONWORKS connection (Neuron chip) and /or the Ethernet connection (COM server) are not ready to use. BACnet router must be configured with DESIGO TOOLSET / XWORKS plus. If the status still remains on NO_OUTPUT after a renewed configuration the BACnet router must be replaced.
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OPEN_LOOP SHORTED_LOOP

Network fault is detected as no link pulse is received from the hub. Check Ethernet connection from BACnet router to hub. BBMD loop detected as more than one BBMD appears in one IP segment. Check network topology and configure BACnet with DESIGO TOOLSET / XWORKS plus. Because of a network loop, for example, the router functionality cannot work correctly. Check network topology and configure BACnet router with DESIGO TOOLSET / XWORKS plus Other faults, for example low battery (see STATUS LED).

PROCESS_ERROR

UNRELIABLE_OTHER

Technical data

General device data
Operating voltage Protective extra-low voltage PELV Frequency Power consumption Internal fuse Processor Memory space FLASH RAM Througout LONWORKS Ethernet/IP
AC 24 V 20 % HD 384 50/60 Hz max. 6 VA thermic, automatic reset Motorola MB 1 MB min. type max. max. typ. min.

Operating data

Latency LONWORKS Ethernet/IP
30 packages/sec. 50 packages/sec. 80 packages/sec. 50 ms 30 ms 15 ms
Data backup in case of power failure Configuration parameter (FLASH) Lithium battery Power supply Plug-in screw terminal
> 10 years > 4 years typical stranded or solid conductors 0.25 to 2.5 mm2 or 2 x 1.5 mm2 TP/FT-10 FTT-10A 78 kbit/s BACnet protocol over LonTalk RJ45 socket unscreened stranded or solid conductors max. 3 m

LONWORKS connection

Interface type Transceiver Bit rate Protocol Pin Plug Plug-in screw terminal Wiring, RJ45 Connecting cable PXM20/DESIGO TOOLSET / XWORKS plus Wiring, plug-in screw terminal Cable type Cable lengths

2-core, twisted pair, unscreened max. 450 m in free topology max. 900 m in serial topology
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Ethernet connection

Interface type Bit rate Protocol Pin Wiring Cable type Cable lengths Protection standard to EN 60529 Isolation protection class Operation: Class 3K5 as per IEC 721 Temperatur 0. 50 C Feuchte < 85 %rH Product safety Automatic electronic controls for household and similar use Special requirements for energy controllers Electromagnetic compatibility For residential, business, general commercial and light industrial use. Interference immunity Emitted interference Meets requirements for CE marking: Electromagnetic compatibility UL-Approbation
10BaseT, IEEE 802.3 compatible 10 Mbit/s BACnet over UDP/IP RJ45 socket screened standard CAT5 UTP1) or STP2) max. 100 m IP20B III Transport 2K3 as per IEC 721 25. 65 C < 95 %rH
Housing protection standard Protection class Ambient conditions

Industry standards

EN 60730-1 EN 60730-2-11
EN 61000-6-2 (Industry) EN 61000-6-3 (Residential) 2004/108/EG UL 916: PAZX, PAZX7

Dimensions Weight

See "Dimensions" Including packaging

approx. 1 kg

UTP Unshielded Twisted Pair
STP Shielded Twisted Pair

Connection terminals

AC 24 V 6 VA

Ethernet

LON MMI TOOL CLA 51 CLB
Terminal Name TE G|G0 Ethernet MMI/TOOL CLA|CLB
Description Functional earth Supply voltage AC 24 V Ethernet network connection RJ45 socket (for PXM20 operator unit or DESIGO TOOLSET / XWORKS plus) LONWORKS network connection
Siemens Building Technologies
PXG80-N BACnet router for LONWORKS Ethernet/IP
Sockets LONWORKS RJ45 socket unscreened, connection for DESIGO automation stations
LONWORKS, Data A (CLA) LONWORKS, Data B (CLB) G0/GND G/Plus
Unoccupied Unoccupied COM1/TxD COM1/RxD
RJ45 socket screened, standard connection acc. to AT&T256

3206Z01

Tx+ TxRx+ Unoccupied

5. 6. 7. 8.

Unoccupied RxUnoccupied Unoccupied

Dimensions

Dimensions in mm

28 216

2000 - 2009 Siemens Building Technologies Ltd.

Subject to change

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LONWORKS , LonTalk and Neuron are registered trademarks of Echelon Corporation PXG80-N BACnet router for LONWORKS Ethernet/IP CA1N9260en_March 2009