This invention relates to a control network system for textile machines.
A variety of operations are performed in a textile mill which involve monitoring and controlling the functions of sophisticated machinery intended for different operations. Operations such as fibre opening and cleaning, carding, combing, drawing and spinning are carried out simultaneously in a textile factory. Generally numerous control parameters are set for machines involved in fibre preparation and spinning processes for producing yarn of a predetermined quality and yarn count. These values vary according to the type of raw materials/yarn counts used and any change in the raw material/yarn count would require change in the control parameters also.
Normally trial runs are carried out in each machine with a given raw material for determining the required parameters. Control devices having memory are utilized to feed these predetermined parameters to the desired textile machine and these control devices hold only one set of parameters or program at a given time. Each time a change is necessitated, down loading the particular control unit with a fresh program cannot be avoided.
In a textile mill/factory a plurality of different machines are operated simultaneously. Each machine is provided with individual control units. A simple change in any program must therefore be transported to all these individual control units either by manual feeding or by means of expensive electronic

devices like computers which interface with individual control units. Manual feeding of data may lead to errors while computerizing is expensive.
In order to avoid this, a control system network has been developed by us which avoids usage of computers connected to interface with respective control units of individual machines. The control units deviced by us consists of conventional memory device, interface device and display unit and a central processing unit. These control units are interconnected by means of a communication link between each other. Communication link interfaces between the control units thereby establishing a simple net work system. The control unit has facility to store multiple programs. The control units are capable of copying one set of program values either to the same machine or across to a plurality of machines, thereby avoiding separate computer interfaces to issue commands for program change.
Control units are operably connected to different stations of textile processing. For instance fibre opening and cleaning, carding, combing, drawing, roving and spinning machines are provided with individual control units which are connected to each other through a communication link. The control unit is is deviced and is capable of transporting any desired program change to the other desired control units. This simplifies the operation procedure of various textile machinery with respect to different control values whenever necessary.

Accordingly, the present invention provxdes a control network system for textile machinery comprising a plurality of control
units, such as herein described, each consisting
of a central processing unit, memory unit, interface device and display having stored data of parameters relevant to textile fibres means to produce command control signals, and interface means, one control unit being responsive to the commands from the other control unit of the desired textile processing machine, a communicating link operatively connecting each of the said control units, thereby constituting a network of control system.
This invention will now be described with reference to the block diagram shown in the accompan3'ing drawings.
The control unit stores multiple programs relevant to different types of textile fibres that are to be processed. Command signals issued by one control unit to one or more of the other control unit will alter the functions and processing of the machinery as desired depending on the type of fibre being processed.
Control system of this invention simplifies the operational procedures of different types of textile machines which can be controlled by the commands issued from control unit. Data stored in the Control unit may be appropriately selected to vary the functions of any one or more of the machines which are simultaneously and continuously operated.

WE CLAIM:
1. A control network system for textile machinery comprising a plurality of control units such as herein described each consisting of a central processing unit, memory unit, interface device and display having stored data of parameters relevant to textile fibres, means to produce command control signals, and interface means, one control unit being responsive to the commands from the other control unit of the desired textile processing machine, a communicating link operatively connecting each of the said control units, thereby constituting a network of control system.
2. The control network system as claimed in claim 1, wherein the said control units are provided with multiple memory locations for storing different programs.
3. The control network system as claimed in claims 1 and 2 wherein the said control units are connected to fibre opening and cleaning, carding, combing, drawing, roving and spinning machines.
4. A control network system for textile machinery substantially as herein described with particular reference to the accompanying drawings.