Allen-Bradley MicroLogix 1400 - Example DH-485 Connections

Rockwell Automation Publication 1766-UM001I-EN-P - June 2015 217
Connecting to Networks via RS-232/RS-485 Interface Appendix E
Example DH-485 Connections
The following network diagrams provide examples of how to connect
MicroLogix controllers to the DH-485 network. You can connect a MicroLogix
1400 controller to your DH-485 network directly without using a RS-232 to
RS-485 converter and optical isolator, such as the Advanced Interface Converter
(AIC+), catalog number 1761-NET-AIC, as shown in the illustrations below,
because Channel 0 has isolation and RS-485 built-in.
However, you may need to use an AIC+ to connect Channel 2 of the MicroLogix
1400 controller to a DH-485 network. For more information on the AIC+, see
the Advanced Interface Converter and DeviceNet Interface Installation
Instructions, Publication 1761-5.11
.
TIP
Use a 1763-NC01 Series A or later cable to connect
a MicroLogix 1400 controller to a DH-485 network.
You can connect a MicroLogix 1400 controller to your DH-485 network
directly without using a RS-232 to RS-485 converter and optical
isolator, such as the AIC+, catalog number 1761-NET-AIC, as shown in
the illustration below, because Channel 0 has isolation and RS-485
built-in.
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
AIC+ AIC+ AIC+
AIC+
DH-485 Network
SLC 5/04 PanelView 550
MicroLogix 1500MicroLogix 1000 MicroLogix 1200 SLC 5/04
AIC+
AIC+
SLC 5/04 PLC-5
DH+ Network
Personal Computer
MicroLogix 1400
44609