networking with dh+
DESCRIPTION
NETworkingTRANSCRIPT
7/18/2019 Networking With DH+
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Rockwell
AutomationHands-OnSeminar Series
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NETWORK ING WITH DH+
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DH+ Pro tocol Overview
• Peer-to-Peer Communication – Utilizes Tolken Passing
• 64 nodes maximum
• Remote Programming of SLC 500’S, PLC-2, PLC-3, andPLC-5
• Direct Connections to 5/04,PLC-5, Panelview, and
Industrial Terminals
• 57.6, 115.2, OR 230Kbaud data rate
• Pub # 1770-6.5.16 DH/DH-485/DH+ Ref Manual
• Robust Industrial Network
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5/04 and DH+
• Channel 1: 3 Pin Connector – Actual DH+ Communication
– Beldon #9463 Cable
• Programming Terminal – Programming and
Monitoring
• Channel 0: RS-232 Port – DF1 Full and Half Duplex
– Master and Slave
– ASCII
– DH-485
Channel 1
Channel 0
SLC 5/04 CPU
RUN REM PROG
RUN FORCE
FLT
BATT
DH+
RS232
Prog Term
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Network Topologies
Daisy-Chain – Each device has two sections of cable tied together
– Each end has termination (resistor/capacitor)
SLC SLC SLC SLC
ExamplesDH+
DH-485
Remote I/O
Beldon #9463 cable
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Network Topologies
Trunk-Line / Drop-Line – Trunk line very long - run through plant
– Drop lines very short
– Drops connected to trunk with Y-adapters
SLC SLC SLC SLC
Trunk Line
Drop Line Drop Line Drop Line Drop Line
Examples
Data Highway (DH)Devicenet
DH+ can be
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DH+ Commun icat ions
RSLogix 500 Software AI 500 Software6200/AI Software
PLC-5
DH+
SLC-5/04 PLC-2, PLC-3PLC-5/250
Other Processors
57.6Kbaud: 10,000 feet115.2Kbaud: 5,000 feet230.4Kbaud: 2,500 feet
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DH+ to DH-485 In terface
Interface through a 1785-KA5
– Translate DH-485 <-> DH+
– Allows PLC5s and SLCs to communicate
RSLogix 500Software
Link Coupler
SLC 5/01
Link Coupler
SLC 5/03
Link Coupler
SLC 5/02
PLC-5 PLC-5
DH-485 Network #1 DH-485 Network #2
DH+
Link Coupler
SLC 5/03
SLC 5/04
DH+
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Ethernet Commun icat ions
PLC-5
SLC-5/04
Ethernet
DH+
PI EthernetGateway
DH+
Ethernet
PLC-5 withBuilt-in EthernetDH+