Allen-Bradley MicroLogix 1200 Reference Manual page 319

Figure 21.3 DH-485 and DH+ Example Network
DH-485 Network
AIC+
Node 10 Node 11
TERM
A
B
COM
SHLD
CHS GND
TX TX
TX PWR
DC SOURCE
CABLE
EXTERNAL
MicroLogix 1000
DH+ Network
Node 63 octal (51 decimal)
"This Controller" Parameters
See "Target Device" Parameters on page 21-12.
"Control Bits" Parameters
See "Control Bits" Parameters on page 21-14.
"Target Device" Parameters
Message Timeout
See Message Timeout on page 21-12.
Data Table Address
See Data Table Address/Offset on page 21-13.
Local Bridge Address
This variable defines the bridge address on the local network. In the
example, DH-485 node 12 (MicroLogix 1500 on Link ID 1) is writing data
to node 51 (SLC 5/04 on Link ID 100). The SLC 5/04 at node 17 is the
bridge device.
This variable sends the message to local node 17.
TERM
A
B
COM
SHLD
CHS GND
TX TX
TX PWR
DC SOURCE
CABLE
EXTERNAL
AIC+
SLC 5/03
Node 5
AIC+ AIC+
Node 12
TERM TERM
A A
B B
COM COM
SHLD SHLD
CHS GND CHS GND
TX TX TX TX
TX PWR TX PWR
DC SOURCE DC SOURCE
CABLE CABLE
EXTERNAL EXTERNAL
MicroLogix 1200 MicroLogix 1500
Node 23 octal (19 decimal)
SLC 5/04
Communications Instructions
TERM
A-B
A
B
COM
SHLD
CHS GND
TX TX
TX PWR
DC SOURCE
CABLE
EXTERNAL
AIC+
PanelView 550
Node 22
AIC+
Node 17
TERM
A
B
COM
SHLD
CHS GND
TX TX
TX PWR
DC SOURCE
CABLE
EXTERNAL
SLC 5/04
Node 40 octal (32 decimal)
21-19
PanelView
Link ID = 1
Link ID = 100
PLC-5
Publication 1762-RM001C-EN-P