Which Hardy Instrument can I use with my CompactLogix PLC?

Hardy Instruments has several different models of units that will work with the Allen-Bradley CompactLogix PLC system.

Hardy has the HI 1769-WS and the HI 1769-2WS modules that will plug directly into the CompactLogix chassis and communicate with the PLC through the backplane.
The HI 1769-WS is a weight controller module for a single scale and the HI 1769-2WS has the capabilities of two scales.

Hardy has the HI 1769-FC module that will plug directly into the CompactLogix chassis and communicate with the PLC through the backplane.
The HI 1769-FC module is a feeder controller card that derives an output percentage level to run the feeder and to control the feed rate to a given setpoint.

Hardy also has stand alone controllers that can communicate to the CompactLogix PLC via various communications platforms.  These are:
Device Net communications.
HI 200 DNWM, is a DeviceNet module.  This module is also found in the Any-Weigh DeviceNet Bench scale.
HI 3000 series, which include the HI 3030, a multi scale weight controller unit; the HI 3010, a filler/dispenser unit; and the HI 3300, a Tension control unit.  
HI 4000 series, which include the HI 4050, a weight controller unit; and HI 4060, a Rate controller unit.

EIP - Ethernet IP communications.
HI 3000 series, which include the HI 3030, a multi scale weight controller unit; the HI 3010, a filler/dispenser unit; and the HI 3300, a Tension control unit.  
HI 4000 series, which include the HI 4050, a weight controller unit; and HI 4060, a Rate controller unit.HI 4000 series, which include the HI 4050, a weight controller unit; and HI 4060, a Rate controller unit.