Hardy HI 2151/30WC Single-Scale Controller - Manual (Page 7)

Section 1: Overview
1
Section 1 OVERVIE W
1.1. SCOPE
This manual describes the operating procedures, specifications, installation, and setup for
the Hardy Process Solutions, PROFIBUS Interface Option -B12, which is used with the
Hardy HI 2151 Series Weight Controllers.
To ensure the maximum service life and safe operation of the PROFIBUS Interface Card,
use the card only as described in this manual and observe the cautions, warnings, and
safety procedures.
Hardy Process Solutions appreciates your business. Should you have any problems, please
contact our Customer Service Department at:
Phone: (858) 278-2900 FAX: (858) 278-6700
1.2. DESCRIPTION
Using the Siemens SPC3 chip set, the PROFIBUS Option B12 interface card serves as a
high speed, intelligent client to a scanning PROFIBUS-compatible server that is setup on a
PC or PLC (Programmable Logic Controller). This arrangement supports PROFIBUS-DP
(Decentralized Periphery) and allows users to access data exchanged between the server
and the HI 2151 Weight Controller for use in PLC ladder logic, chart, or other programs.
You can configure the HI 2151 Series-B12 to function as either a local display for
weighing parameters or a blind controller that digitizes load cell signals and provides
responsive set point control.
1.3. FUNCTION
The PROFIBUS Interface Option allows the PROFIBUS server to use all of the Hardy HI
2151/20WC configuration, weighing, and scale-calibration functions. The interface
provides bi-directional communications between a server and client and allows the server
to access all configuration and weighing parameters of the HI 2151 Series Weight
Controllers.
Two data transfer options let you select commands and summaries: Selectable Transfers or
Block Transfers (a set of pre-defined data blocks). The Write commands (outputs) are sent
from the server to the weight controller. The Read Data Summaries (inputs) return weight
and scale status data to the server.
Passing the data in integer format eliminates conversion steps and reduces the time needed
to incorporate the PROFIBUS Interface Option into the server’s ladder logic or chart code.
The Interface uses transmission medium (2 or 4 wire cable) characteristic of serial field bus
applications.
1.4. SPECIFICATIONS
The PROFIBUS Interface Option is used for the following applications:
Batching/Blending
Check Weighing
Filling/Dispensing
Force Measurement
Level by Weight
Rate Monitoring