18 • Fieldbus coupler/controller Fieldbus coupler 750-319
3.1.3 Hardware
3.1.3.1 View
Fieldbus connection Series 231 (MCS)
Address
Address
Configuration interface
E |
02 |
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4 |
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C |
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6 |
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A |
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E |
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C |
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6 |
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A |
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SERVICE
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Status |
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LonWorks |
01 |
02 |
voltage supply |
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-Power jumper |
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A |
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contacts |
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C |
-System |
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SERVICE |
B |
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STATUS |
24V |
0V |
Data contacts |
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ICOM |
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Supply |
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24V |
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I/O |
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0V |
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Supply via |
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power jumper |
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contacts |
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24V |
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750-319 |
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0V |
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Power jumper |
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contacts |
flap opened
Fig. 3-1: Fieldbus coupler 750-319 LON |
g031900e |
The fieldbus coupler comprises of:
•Supply module with Internal system supply module for the system supply as well as power jumper contacts for the field supply via I/O module assemblies.
•Fieldbus interface with the bus connection
•Display elements (LED's) for status display of the operation, the bus communication, the operating voltages as well as for fault messages and diagnosis
•Encoder switch for logical node address
•Service-Pin
•Configuration interface
•Electronics for communication with the I/O modules (internal bus) and the fieldbus interface
Modular I/O System
LONWORKS®
Fieldbus coupler/controller |
• 19 |
Fieldbus coupler 750-319 |
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3.1.3.2 Device supply
The supply is made via terminal bocks with CAGE CLAMP® connection. The device supply is intended both for the system and the field units.
FiELDBUSINTERFACE |
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24V |
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1 |
5 |
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DC |
I/O |
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24V / 0V |
10nF |
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MODULES |
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DC |
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0V |
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2 |
6 |
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24V |
24V |
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FiELDBUS INTERFACE |
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ELECTRONIC |
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3 |
7 |
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0V |
0V |
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10nF
4 8
750-819
Fig. 3-2: Device supply |
g031901d |
The integrated internal system supply module generates the necessary voltage to supply the electronics and the connected I/O modules.
3.1.3.3 Fieldbus connection
For the field bus connection, the LON interface is equipped with a 2 pole header, series 231 (MCS). The scope of delivery includes the plug connector 231-302.
Bus cable connection is made isolated from the system. The data decoding method makes it independent of the polarity.
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Fig. 3-1: Fieldbus connection, series 231 (MCS) |
g012735x |
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The connection point is mechanically lowered allowing the installation in a 80 mm deep switch box once the plug is connected.
The connecting cable Twisted Pair is recommended for the FTT-10-Tranceiver (Free-Topology Transceiver) in the LON coupler.
More information
i You can find detailled information on more cable types in Chapter 5.3.5 „Cable specification“.
Modular I/O System
LONWORKS®
20 • Fieldbus coupler/controller Fieldbus coupler 750-319
3.1.3.4 Display elements
The operating condition of the fieldbus coupler or node is signalled via light diodes (LED).
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02 |
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A |
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C |
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C |
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SERVICE |
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B |
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D |
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A |
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STATUS |
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24V |
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0V |
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ICOM |
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I/O |
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Fig. 3-3: Display elements 750-319 |
g031902x |
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LED |
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Color |
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Meaning |
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SERVICE |
green |
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The 'SERVICE'-LED indicates the status of the Neuron application. |
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STATUS |
red |
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The 'STATUS'-LED visualizes error states and wink tasks. |
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ICOM |
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green |
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The 'ICOM'-LED indicates the internal communication between |
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Neuron-Chip and µC 165. |
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IO |
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red /green |
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The ‚I/O‘-LED indicates the operation of the node and signals faults |
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encountered. |
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A |
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green |
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Status of the operating voltage system |
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C |
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green |
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Status of the operating voltage – power jumper contacts |
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3.1.3.5 Configuration interface
The configuration interface used for the communication with WAGO-I/O-CHECK or for firmware transfer is located behind the cover flap.
open flap
Configuration interface
Fig. 3-4: Configuration interface g01xx06e
The communication cable (750-920) is connected to the 4 pole header.
Modular I/O System
LONWORKS®
Fieldbus coupler/controller |
• 21 |
Fieldbus coupler 750-319 |
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3.1.3.6 Hardware address
Each Neuron-Chip in a WAGO LON fieldbus coupler is provided from the factory with a unique and unambiguous physical address, the Neuron-ID. This address is to be found on the rear of the coupler and on an adhesive tear-off label on the side of the coupler.
By a press on the Service-Pin at the beginning of network configuration a special network management telegram will be send out.
With this telegram the node informs the network management tool about his Neuron-ID, a unique 48-bit number.
During the starting up, the Network Management Tool Software uses the Neu- ron-ID for the unequivocal addressing of the node.
For network communication the NMT software assignes automatically in the standard applications WAGO TOPLON® IF and WAGO TOPLON® PRIO for each node a logical address. Thereby the encoder switches are without function.
Assigning a logical address via the encoder switch on the buscoupler is only relevant when an independent application is written in Neuron-C, the address can be freely assigned within the program, or in an application involving a data exchange coupler (peer-to-peer).
More information
i Please find information about the LON data exchange coupler (peer-to-peer) in the catalogue information and the expanded data sheet under: http://www.wago.com/wagoweb/documentation/navigate/nm0dcl_d.htm
The address is adjustable in the range of 0x00 and 0xFF and is used to create the node address.
The value of the switch at the bottom is the most significant value of the address (upper Nibble).
The value of the switch at the top is the least significant value of the address (lower Nibble).
Example:
For the logical address 0x63 the switch at the top is set to 3 and the switch at the bottom is set to 6.
During the initialization the chosen address is read. If the address is changed during the running mode, the change has no effect until power is cycled.
E |
02 |
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4 |
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C |
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A |
6 |
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8 |
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E |
02 |
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4 |
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C |
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A |
6 |
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8 |
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SERVICE |
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Fig. 3-2: Encoder switches for logical address and Service-Pin |
g9123a0x |
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Modular I/O System
LONWORKS®