Profibus

The PROFIBUS Interface Option is available on several Hardy products.

The PROFIBUS DP Interface Option is a high-speed interface card using the Siemens SPC3 chip set. The PROFIBUS Interface Option is an intelligent slave (Passive Station)

to a scanning PROFIBUS compatible Master Device (Active Station) such as a Programmable Logic Controller (PLC) or Personal Computer (PC). The PROFIBUS Interface Option supports PROFIBUS-DP (Decentralized Periphery). The user can access data exchanged between the Master and the Hardy Instruments Weight Controller, for use in PLC ladder logic, chart or other programs.

The PROFIBUS Interface Option enables the PROFIBUS Master to use all configuration, weighing, diagnostics and scale calibration functions contained in Hardy controllers.

The PROFIBUS Interface Option is designed to allow the user to select commands and summaries via two data transfer options: (Selectable Transfers) or (Block Transfers) a set of pre-defined data blocks. The Write commands (outputs) are used to send commands from the Master to the weight controller. The Read Data Summaries (inputs) are used to return weight and scale status data to the Master. Because the PROFIBUS Interface Option data is already in integer values, time wasting conversion steps are eliminated. This reduces the time it takes to incorporate the PROFIBUS Interface Option into the Master’s ladder logic or chart code.

The PROFIBUS Interface Option uses transmission medium (2 or 4 wire cable) characteristic of serial fieldbus applications.

A PROFIBUS Interface Option enables bi-directional communications between a Master and Slave for weight, set point, status and calibration data. The PROFIBUS Interface Option is used for the following applications:

• Filling

• Dispensing

• Batch Weighing Control

• Monitoring Rate of Flow

• Evaluating Totalized Weight

• Check Weighing

• Weight Level Alarming

Note: All certifications for this Profibus option when used in the HI 4050 Series controllers are pending.