Allen-Bradley micrologix 1500, Руководство пользователя

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Publication 1764-UM001A-US-P
E-16 Understanding Communication Protocols
MicroLogix Remote Packet Support
MicroLogix 1500 controllers can respond and initiate with device’s
communications (or commands) that do not originate on the local DH-485
network. This is useful in installations where communication is needed between
the DH-485 and DH+ networks.
The example below shows how to send messages from a PLC device or a PC on the
DH+ network to a MicroLogix controller on the DH-485 network. This method
uses an SLC 5/04 processor bridge connection.
When using this method (as shown in the following illustration):
•
PLC-5 devices can send read and write commands to MicroLogix 1500
controllers.
•
MicroLogix 1500 controllers can respond to MSG instructions received.
•
The MicroLogix 1500 controllers can initiate MSG instructions to devices on
the DH+ network.
•
PC can send read and write commands to MicroLogix 1500 controllers.
•
PC can do remote programming of MicroLogix 1500 controllers.
A-B PanelView
TERM
A
B
COM
SHLD
CHS GND
TX
TX PWR
TX
DC SOURCE
CABLE
EXTERNAL
TERM
A
B
COM
SHLD
CHS GND
TX
TX PWR
TX
DC SOURCE
CABLE
EXTERNAL
TERM
A
B
COM
SHLD
CHS GND
TX
TX PWR
TX
DC SOURCE
CABLE
EXTERNAL
TERM
A
B
COM
SHLD
CHS GND
TX
TX PWR
TX
DC SOURCE
CABLE
EXTERNAL
TERM
A
B
COM
SHLD
CHS GND
TX
TX PWR
TX
DC SOURCE
CABLE
EXTERNAL
TERM
A
B
COM
SHLD
CHS GND
TX
TX PWR
TX
DC SOURCE
CABLE
EXTERNAL
TERM
A
B
COM
SHLD
CHS GND
TX
TX PWR
TX
DC SOURCE
CABLE
EXTERNAL
AIC+ AIC+ AIC+
AIC+
DH-485 Network
SLC 5/04
PanelView 550
MicroLogix 1500 with 1764-LSP
or 1764-LRP Processor
MicroLogix 1000
MicroLogix 1200
SLC 5/04
AIC+
AIC+
SLC 5/04 PLC-5
DH+ Network
MicroLogix 1500 with
1764-LRP Processor