Allen-Bradley ControlLogix 1756-DH485, User Manual, Page: 24 / 110

Publication 1756-UM532A-EN-P - May 2006
2-6 Overview of the DH-485 Network
1761-NET-AIC Advanced
Interface Converter Product
Overview
The AIC+ advanced interface converter provides a communication link
between various networks devices. Ports 1, 2, and 3 are used for making the
communication connections. The AIC+ is compatible with a variety of SLC
and MicroLogix controllers and the 1756-DH485 communications module.
The MicroLogix controllers provide power to the AIC+ via port 2’s cable.
However, if a controller is not connected to port 2, a 24V dc power supply
connected to the converter’s external power terminals is required. The DC
power source selector switch needs to be set for your particular configuration.
The baud rate selector switch is used to match the baud rate filter of the AIC+
to the network baud rate. This switch
does not change the network baud rate
and is normally left in the AUTO position. In high noise environments, the
baud rate selector switch should be taken out of the AUTO mode and set to
the same baud rate as the network.
Operating Modes
The AIC+ can be used in the following modes for DH-485:
•
point-to-point RS-232 isolator
•
RS-232 to RS-485 isolator
Communication is established using hardware handshaking or auto transmit
signals.
Device Compatibility
The AIC+ can be used to interconnect the following devices:
•
SLC 500, 5/01, 5/02, and 5/03 controllers (channel 1)
•
SLC 5/03, 5/04, and 5/05 controllers (channel 0)
•
MicroLogix controllers
•
Logix Controllers
•
Operator interface devices
•
PC serial ports (or any 9-pin DTE serial port)
•
Logix controller serial port (DH485 mode)
•
1756-DH485 module
TIP
The 1761-HHP-B30 Hand-Held Programmer is not
connectable to the AIC+ advanced interface converter.