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MLC Connectivity to SLC 500 via DeviceNet
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Equipment Needed for Connecting
MLC 9000 BCM Allen-Bradley SLC 500 CPU 5/02 or higher
– 5/02 smallest CPU to support M0/M1 File Transfer Allen-Bradley 1747-SDN DeviceNet Scanner Allen-Bradley RSNetworx or DeviceNet Manager Software RSLogix PLC Programming Software PC Interface(i.e 1770-KFD for programming) DeviceNet Cabling
– Thick Trunk Cable with Mini-Connectors– Thin Drop Cable with Micro or Mini-Connectors– T-Connectors– Terminating connectors(110 Ohms)
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How SLC500 Communicates with 1747-SDN
Two methods used– I/O Transfer
1747 occupies 32 Input Words and 32 Output Words– 1 word of input, 1 word of output used for module status
and command– 62 words available for devices
Intended for devices transmitting small blocks of information– Proximity and Photoelectric Switches– “Slice” I/O– Valves
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How SLC 500 Communicates with 1747-SDN
Block Transfer via M0/M1 Files– M1 File
150 Words Available for Input from Network Devices (M1:1.0-M1:1.149)
74 Diagnostic Words (M1:1.150-M1:1.223) 32 Words for Inbound Explicit Message Control
(M1:1.224-M1:1.255)
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How SLC 500 Communicates to 1747-SDN
Block Transfer via M0/M1 Files– M0 File
150 Words of data used for output to network devices (M0:1.0-M0:1.149)
74 Words Reserved/Unused (M0:1.150-M0:1.223) 32 Words used for outgoing explicit message
control (M0:1.224-M0:1.255)
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How MLC 9000 Communicates with 1747-SDN
MLC 9000 Gateway– Converts DeviceNet Messages from Scanner into
Modbus Messages to Bus Control Module Uses Polled Messaging for Implicit I/O
Connection– One Loop Control Module takes up 16 Bytes of
Input and 6 Bytes of Output Uses Explicit Messaging to gain access to
parameters not supported through implicit connection
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Implicit I/O Connection Data
Offset Input Output0 Process Variable(High Byte) Setpoint 1 (High Byte)1 Process Variable(Low Byte) Setpoint 1 (Low Byte)2 Actual Setpoint (High Byte) Setpoint 2 (High Byte)3 Actual Setpoint (Low Byte) Setpoint 2 (Low Byte)4 Setpoint 1 (High Byte) Setpoint Switch (High Byte)5 Setpoint 1 (Low Byte) Setpoint Switch (Low Byte)6 Setpoint 2 (High Byte) Unused7 Setpoint 2 (Low Byte) Unused8 Setpoint Switch (High Byte) Unused9 Setpoint Switch (Low Byte) Unused10 Heat Output Power (High Byte) Unused11 Heat Output Power (Low Byte) Unused12 Cool Output Power (High Byte) Unused13 Cool Output Power (Low Byte) Unused14 PID Bit Parameters (High Byte) Unused15 PID Bit Parameters (Low Byte) Unused
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Setting Up PC to Communicate via DeviceNet
In RSLinx, Select Communications and Configure driver
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Setting Up PC to Communicate via DeviceNet
Under Available Driver Types, select DeviceNet Drivers and select Add new
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Setting Up PC to Communicate via DeviceNet
Select 1747-SDNPT
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Setting Up PC to Communicate via DeviceNet
Select Processor to Connect to and slot where 1747-SDN resides
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Setting Up PC to Communicate via DeviceNet
1747-SDNPT-1 should be seen running
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Setting Up SLC500 to Pull Information from 1747-SDN
Start RSLogix and Select File-New
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Setting Up SLC500 to Pull Information from 1747-SDN
Select processor from list
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Setting Up SLC500 to Pull Information from 1747-SDN
From Menu Tree, Select IO Configuration then add 1747-SDN into Slot 1 of Rack
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Setting Up SLC500 to Pull Information from 1747-SDN
Highlight on Rung in Ladder Window
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Setting Up SLC500 to Pull Information from 1747-SDN
•Insert one Normally Closed Contact and Two Copy Instructions into Rung 1
•Copy Instructions move data from M0/M1 Files to usable data areas
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Setting Up SLC500 to Pull Information from 1747-SDN
•Last Rung Energizes Output Run coil and disables in event of error in module
•Download to PLC and place in Run Mode
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Configuring the DeviceNet Network
•To Configure Network, Gateway EDS file must be installed
•EDS (Electronic Data Sheet) carries configuration properties for DeviceNet products
•Start RSNetworx then select Tools-EDS Wizard
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Configuring the DeviceNet Network
Select Register EDS File then select Choose File
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Configuring the DeviceNet Network
•Select A: Drive then select West0456•Click Open
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Configuring the DeviceNet Network
Wizard will run test on EDS
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Configuring the DeviceNet Network
Wizard will prompt you to associate a graphic icon with EDS
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Configuring the DeviceNet Network
This will finish the EDS Installation
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Configuring the DeviceNet Network
Select 1747-SDN from Device List
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Configuring the DeviceNet Network
Insert MLC 9000 Gateway form Device List
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Configuring the DeviceNet Network
Double Click on 1747-SDN and select Scanlist
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Configuring the DeviceNet Network
•Click on arrow to add Gateway to 1747-SDN’s scanlist
•Select edit I/O parameters
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Configuring the DeviceNet Network
•Adjust the Polled Rx and Tx parameters to match the number of I/O taken up by LCM’s
•16 bytes of Rx and 6 bytes Tx for every LCM (up to 8 LCM’s)
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Configuring the DeviceNet Network
•Select Input•Select Memory Type M file•Select AutoMap
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Configuring the DeviceNet Network
•Select Output•Select Memory Type M file•Select AutoMap
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Configuring the DeviceNet Network
•From Main Screen, select Tools then Node Commissioning•Nodes must be commissioned with proper baud rate and node address before the configuration can be downloaded to network•Select Browse
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Configuring the DeviceNet Network
•Select 1747-SDNPT from list of drivers•RSNetworx will detect connected devices•Select Node to adjust
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Configuring the DeviceNet Network
Change Node Address and click Apply if changes are needed
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Configuring the DeviceNet Network
•To prepare for download, network connection must be established online first
•Click Network, then Online
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Configuring the DeviceNet Network
After Online connection established, select network-download to network to send configuration