osai 10 CNC PLUS Application Manual

10 Series CNC

PLUS

Application Manual

Code: 45006677Z

Rev. 11

PUBLICATION ISSUED BY:

OSAI S.p.A.

Via Torino, 14 - 10010 Barone Canavese (TO) – Italy

e-mail: [e-mail] Web: www.osai.it

Copyright © 2002-2003 by OSAI

All rights reserved

Edition: July 2003

IMPORTANT USER INFORMATION

This document has been prepared in order to be used by OSAI. It describes the latest release of the product.

OSAI reserves the right to modify and improve the product described by this document at any time and without prior notice.

Actual application of this product is up to the user. In no event will OSAI be responsible or liable for indirect or consequential damages that may result from installation or use of the equipment described in this text.

UPDATE

10 Series CNC PLUS Application Manual

SUMMARY OF CHANGES

General

This publication has been issued with the software release 7.2.

This issue completely replaces the previous ones.

PAGE	UPDATE TYPE
Chapter 3
Page 3	Updates values in SW02 system status flag tables.
Chapter 6
Page 2,3	Modified error codes in FB $EMERGNR
Page 10,11	Modified error codes in $EMERGR
Page 13	Added paragraph on FastWire emergency conditions
Chapter 11
	Added new chapter on CANOPEN
Chapter 12
	Added new chapter on FASTWIRE

10 Series CNC PLUS Application Manual (11)

Preface

10 Series CNC PLUS Application Manual

PREFACE

The 10 Series numerical control introduces many new Technical concepts. One of the most important of these concepts is the concept of information exchange between the CNC and the integrated PLC (Programmable Logic Controller).

Conventional controls use a window with a large amount of fixed flags, which are continuously scanned and updated by both CNC and programmable logic control.

The concept of 10 Series by-passes this general conception with a simple but unique solution: both CNC and PLC use function calls to alert each other, to pass information or to request a certain action. These function calls need only be executed on event, thus freeing up CPU capacity and increasing the general system performance.

This manual explains the new concept and shows how applications can use its power.

ABOUT THIS MANUAL

This manual is intended to be used by the OEM personnel in charge with the programming of the machine tool interface. It gives an overview of the software architecture to be used to develop the programmable logic.

∙it does NOT explain the PLUS programming language and the use of any of its language elements.

∙it does NOT explain the use of the PLUSEDIT development software.

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Preface

10 Series CNC PLUS Application Manual

This manual is structured as follows:

Chapter 1	explains the concepts of communication between the logic and the system.
Chapter 2	gives a detailed view of the structure of the routines running on the PLC module: it
	shows the timing and the execution priorities of the different routines on the I/O
	processor and it makes you familiar with the special execution mode of the
	background logic programs. Finally, it gives a list of declarations needed to define
	the different routines.
Chapter 3	deals with the data areas in the PLC module's memory and in its dual port.
Chapter 4	explains the routines which make up the interface between the part program and
	the logic.
Chapter 5	shows how the executive command filters can be used.
Chapter 6	covers the emergency routines.
Chapter 7	explains the OEM softkey routine.
Chapter 8	is the practical part of the manual which explains how the controls communication
	concept can be used to create powerful applications.
Chapter 9	this chapter describes how to use the INTERBUS feature on 10 Series systems.
Chapter 10	this chapter describes the configuration modality of PROFIBUS on 10 Series
	systems.
Appendix A	contains a glossary of verbs and expressions used in this manual.

OTHER MANUALS ABOUT PLUS

Beside this manual there are 2 other specific manuals about PLUS:

∙10 Series CNC PLUS LIBRARY code 4500 6682 C

This manual covers the library function calls and the function blocks available in the PLUS programming language:

−Basic language function blocks

−Language extensions

−Counters and timers

−System function calls

−function calls

∙10 Series CNC PLUS LANGUAGE & PLUSEDIT code 4500 6672 P

This manual describes the PLUS language, the editors and the utilities to generate an executable logic program:

−instruction list editor (IL) + basic language elements

−ladder diagram / function block diagram editor (FBD/LD)

−macro instruction list editor (MACRO-IL)

−sequential function chart editor (SFC)

−PLUSGEN generator (compiler)

−I/O configurator

−ASCII editor

2	10 Series CNC PLUS Application Manual (10)

Preface

10 Series CNC PLUS Application Manual

Other manuals may be of interest when programming a machine tool interface:

1.10 Series CNC AMP - Software Characterisation Code : 4500 6667 V describes the system/process software configuration utility and its parameters

2.10 Series CNC Programming Manual Code: 4500 4457 K describes the 10 Series CNC part program language

3.10 Series CNC User Manual Code: 4500 4452 H

describes the use of the human interface, the CNC manual functions and the utilities available to the operator

4.10 Series Family Installation Guide Code 4500 6657 R

contains the complete information needed to realise a correct installation of the 10 Series CNC system.

5.10 Series CNC Software Installation Manual Code 4500 6687 N contains the complete information needed to install the software release.

WARNINGS

For correct control operation, it is important to follow the information given in this manual. Take particular care with topics bearing one of the mentions: WARNING, CAUTION or IMPORTANT, which indicate the following types of information:

Draws attention to facts or circumstances that may cause damage to the control, to the machine or to operators.

WARNING

Indicates information to be followed in order to avoid damage to equipment in CAUTION general.

IMPORTANT Indicates information that must be followed carefully in order to ensure full success of the application.

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Preface

10 Series CNC PLUS Application Manual

END OF PREFACE

4	10 Series CNC PLUS Application Manual (10)

Index

10 Series CNC PLUS Application Manual

INDEX

SYSTEM - APPLICATION LOGIC HANDSHAKE

LOGIC INTERFACE TASKS ......................................................................................	1-2
SYSTEM FUNCTION CALLS.....................................................................................	1-2
COMMON DATA AREAS ..........................................................................................	1-2

ORGANIZATION OF THE APPLICATION LOGIC

AVAILABLE ROUTINES ...........................................................................................	2-1
Routines activated on event (fast input routines) .................................................	2-1
Routines activated on clock (foreground)............................................................	2-1
Routines activated on emergency (emergency routine)........................................	2-2
Routines activated on softkey - (OEM softkey routine) ........................................	2-2
Routines activated background routines .............................................................	2-2
Routines activated on part program events (part program interface).......................	2-2
Routines activated on system commands (consent request)................................	2-2
TASK SYNCHRONIZATION.......................................................................................	2-5
BACKGROUND EXECUTION.....................................................................................	2-9
PLUS ROUTINES DECLARATION.............................................................................	2-12

I/O PROCESSOR /SYSTEM DATA AREAS

SYSTEM STATUS FLAGS........................................................................................	3-2
PROCESS STATUS FLAGS .....................................................................................	3-6
USER DEFINED / GLOBAL VARIABLES (G VARIABLES)...........................................	3-15
M VARIABLES .........................................................................................................	3-16
TABLES ..................................................................................................................	3-17
Axes Table .....................................................................................................	3-17
Tool table........................................................................................................	3-21
Tool offset table...............................................................................................	3-23
User table.......................................................................................................	3-27

PART PROGRAM INTERFACE

STRUCTURE............................................................................................................	4-1
PART PROGRAM INTERFACE TASK........................................................................	4-2

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Index

10 Series CNC PLUS Application Manual

PART PROGRAM INTERFACE ROUTINES ................................................................	4-6
COORDINATED AXES ..............................................................................................	4-8
Consent to move routine...................................................................................	4-8
Motion blocks .................................................................................................	4-10
Consent to move management..........................................................................	4-11
End of motion routine.......................................................................................	4-12
End of move management ................................................................................	4-13
M FUNCTIONS.........................................................................................................	4-14
M decode routine.............................................................................................	4-15
M code management (EXPEDITE).....................................................................	4-18
AMP set up for M functions ..............................................................................	4-19
PSEUDO AXES ........................................................................................................	4-25
Pseudo axes routine........................................................................................	4-25
S WORD..................................................................................................................	4-29
S decode routine .............................................................................................	4-29
T WORD..................................................................................................................	4-34
T decode routine..............................................................................................	4-37
END OF BLOCK ROUTINE........................................................................................	4-43
TOOL OFFSET PRESETTING...................................................................................	4-45
TOOL OFFSET REQUALIFICATION..........................................................................	4-48
DECLARE TOOL LIFE EXPIRED ...............................................................................	4-51
PROBING CYCLE COMPLETED................................................................................	4-53

EXECUTIVE COMMAND FILTER ROUTINES

CYCLE START PUSH BUTTON (PRESSED) ..............................................................	5-5
CYCLE START PUSH BUTTON (RELEASED).............................................................	5-6
CONTROL RESET ....................................................................................................	5-7
MODE SELECT ........................................................................................................	5-8
AXIS SELECT..........................................................................................................	5-9
MANUAL FEEDRATE OVERRIDE SELECTOR............................................................	5-10
FEEDRATE OVERRIDE SELECTOR...........................................................................	5-11
SPINDLE SPEED OVERRIDE SELECTOR..................................................................	5-12
RAPID FEEDRATE OVERRIDE SELECTOR................................................................	5-13
INTERPOLATOR STOP (HOLD) REQUESTED ...........................................................	5-14
RE-START INTERPOLATOR (EXIT FROM HOLD) ......................................................	5-15

EMERGENCY MANAGEMENT

UNRECOVERABLE EMERGENCIES ..........................................................................	6-2
DSI Emergencies ............................................................................................	6-5
RECOVERABLE EMERGENCIES ...............................................................................	6-10
DSI Emergencies ............................................................................................	6-12
FASTWIRE EMERGENCY CONDITIONS ..........................................................	6-13

OEM SOFTKEYS

INTERFACE ROUTINE..............................................................................................	7-1
ON/OFF Softkeys............................................................................................	7-3
MAINTAINED Softkey ......................................................................................	7-3
DATA ENTRY Softkeys....................................................................................	7-4

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Index

10 Series CNC PLUS Application Manual

NORMAL Softkeys ..........................................................................................	7-5
OPLink Function Keys.....................................................................................	7-5

STANDARD APPLICATION NOTES

PLUS INITIALIZATION .............................................................................................	8-1
MACHINE TOOL POWER UP AND RE-POWER UP AFTER E-STOP ...........................	8-2
HOLD MANAGEMENT ..............................................................................................	8-3
RESET MANAGEMENT.............................................................................................	8-6
SPINDLE MANAGEMENT .........................................................................................	8-9
CO-ORDINATED AXES MOVES (MAS) FROM PLUS..................................................	8-11
HARDWARE OVER TRAVEL LIMIT SWITCHES.........................................................	8-16
AXES HOMING ........................................................................................................	8-19
PLUS MESSAGES DISPLAY ....................................................................................	8-22
FEED HOLD.............................................................................................................	8-25
ACTIVE RESET ........................................................................................................	8-27
MANUAL JOG BY THE LOGIC..................................................................................	8-33
FEED RATE OVERRIDE CONTROL ...........................................................................	8-34
FEED RATE BYPASS ...............................................................................................	8-37
SERIAL LINE MANAGEMENT (RS-232) .....................................................................	8-39
AXIS POSTIONING VIA RS-232 SERIAL LINE...........................................................	8-41
Configuration...................................................................................................	8-41
Programming ..................................................................................................	8-42
Installation Specifications .................................................................................	8-45

INTERBUS® FEATURES ON 10 SERIES SYSTEMS

CONFIGURATION APPLICATION IBS CMD ..............................................................	9-3
On-line Operations...........................................................................................	9-5
Off-line Operations ...........................................................................................	9-13
TRANSFERRING THE CONFIGURATION FILE TO THE 10 SERIES CNC.....................	9-15
INTERBUS ERRORS ................................................................................................	9-16

SLAVE PROFIBUS® FUNCTIONALITIES ON 10 SERIES SYSTEMS

SLAVE PROFIBUS CONFIGURATION.......................................................................	10-2
DESCRIPTION OF ERROR CODES RETURNED DURING THE FUNCTIONING OF
THE SLAVE PROFIBUS. ..........................................................................................	10-4

CANOPEN® FUNCTIONS ON SERIES 10 SYSTEMS

CANOPEN BUS CONFIGURATION............................................................................	11-2
CONFIGURATION EXAMPLE....................................................................................	11-4
DESCRIPTION OF ERROR CODES RETURNED DURING OPERATION OF
CANOPEN BUS........................................................................................................	11-5
Errors from RIO EC modules ............................................................................	11-5
Errors from CWIO modules...............................................................................	11-7
ERRORS RETURNED DURING CNC POWER UP .......................................................	11-7

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Index

10 Series CNC PLUS Application Manual

FASTWIRE® FUNCTIONS ON SERIES 10 SYSTEMS

FASTWIRE BUS CONFIGURATION ..........................................................................	12-2
CONFIGURATION EXAMPLE....................................................................................	12-4
DESCRIPTION OF ERROR CODES RETURNED DURING OPERATION OF
FASTWIRE BUS ......................................................................................................	12-5
ERRORS RETURNED DURING CNC POWER UP .......................................................	12-6

GLOSSARY

GLOSSARY .............................................................................................................

A-1

END INDEX

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Chapter 1

SYSTEM - APPLICATION LOGIC HANDSHAKE

Fig. 1-1 System - Application Logic Handshake

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Chapter 1

System - Application Logic Handshake

LOGIC INTERFACE TASKS

The system communicates to the logic through the logic interface. This Interface consists of two tasks, the "consent request task" and the "part program interface" task. These tasks receive the commands and the parameters from the system, process them and sends some of them to the application logic program.

Each one of these tasks can be made up of several routines which have to be written by the PLUS programmer. Some of the routines are optional, i.e. if they have not been written, they will not be activated by the system.

SYSTEM FUNCTION CALLS

The logic from its part communicates with the system through a set of function calls which can include a parameter exchange between the two parties. There are two types of function calls:

∙NO WAIT functions pass a command (with parameters) to the system without waiting for an answer (the application program execution is not suspended).

∙WAIT functions pass a command to the system and wait for a response ( the logic execution is suspended until the response arrives)

COMMON DATA AREAS

The third communication channel between the logic and the system are the common data areas in the battery buffered dual ported memory of the I/O processor board. These areas can be divided in:

∙System area. This is a group of 100 variables of the type short (16 bit integer word) containing the status of the system and/or the processes.

∙Global variables. These variables are referred to as "G" variables. They have two formats; short and double (precision floating point). They can be read and written by both part program and logic program. The G variables are retentive, i.e. they are not cleared after powering up the system.

∙Tables. Tables are retentive memory areas in the dual port of the I/O processor module. They can be commonly accessed by the system and by the logic programs. The data contained in tables includes:

−tool data

−tool offset data

−axes origin data

−axes offsets

END OF CHAPTER

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Chapter 2

ORGANIZATION OF THE APPLICATION LOGIC

The logic program is organised in independent routines. All these routines run on the I/O processor module and have different priorities depending on their use. The program's various routines are activated by the PLC's Operating System either following specific events or on clock or they are continuously executed (in loop).

AVAILABLE ROUTINES

Routines activated on event (fast input routines)

You can define up to 4 interrupt routines (one for each input) which are executed when the relevant "fast input" on the I/O processor module is set true. Each routine is dedicated to a specific fast input. The association of fast input and corresponding routine is given by the predefined names for the routines. The execution starts on the true-going edge of the corresponding fast input signal. All other activities of the I/O processor task will be suspended for the duration of the execution of the routines. In other words, the fast input routines have the highest execution priority of all routines. For this reason these routines must be as short as possible (<< 5ms).

Routines activated on clock (foreground)

This routine (only one can be present) will be executed on each clock tick of the I/O processor module. This clock tick is presently set to 10 ms. If the foreground routine execution time exceeds the available time (max. 10 ms), the system will generate an "overrun error" and go in emergency status.

The primary use of the foreground routine is to "latch" events to be executed with precise and fast timing such as read/write physical I/O device status or handling of security/emergency devices.

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Chapter 2

Organization of the Application Logic

Routines activated on emergency (emergency routine)

Two emergency routines are available: their task is to handle the anomalies (emergencies) detected by the system. The anomaly detected can be recoverable or not recoverable. On emergency, the logic may have to execute sequences of logic in parallel to the steps taken by the system.

Routines activated on softkey - (OEM softkey routine)

There is one routine related to the OEM configured softkeys. Every time an OEM softkey is pressed (or released), this routine will be executed and the softkey's parameters will be passed to it.

The OEM softkeys are defined in AMP, allowing OEM to provide its application with the identical look and feel as the standard system operations (refer to AMP configuration manual). The OEM softkey routine runs at a very low priority.

Routines activated background routines

A background routine is continuously executed in a loop like a program in a standard PLC. The I/O processor can run up to 12 background routines in parallel.

Each background routine can execute functions of the WAIT type which will suspend the execution of that background routine until arrival of the response. In the mean time the other background routines will continue executing. In reality, when one routine is suspended, control will be passed to the next one.

The logic programmer has to optimise the performance of the I/O processor using an optimised distribution of the logic in the available background routines.

Routines activated on part program events (part program interface)

These routines (one for each configured process) will run every time, a part program block contains information related to the logic (like M code, S word and Tool information and all other functions that can be grouped under the definition of logic auxiliary functions).

Routines activated on system commands (consent request)

These routines (one for each configured process) run every time, a command is given to the system (like cycle start, reset, etc.), allowing the logic to read and/or to inhibit the commands given to the system by the operator.

This routine covers most commands given to the system from softkey and/or MTB panel.

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Chapter 2

Organization of the Application Logic

Fig. 2-1 Logic organisation and communication channels

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Chapter 2

Organization of the Application Logic

SYSTEM CPU

SYSTEM

REQUEST TO

EXECUTE LOGIC

ROUTINES

	EMERGENCY	OEM SOFTKEY
PART	ROUTINE	ROUTINE	CONSENT
PROGRAM			REQUEST
INTERFACE	LOGIC INTERFACE		ROUTINE
BACKGROUND		FOREGROUND
ROUTINE		ROUTINE	10 MS
			TIMED
# 1			INTERRUPT
BACKGROUND
ROUTINE
# 2
		FAST INPUT	FAST INPUT
BACKGROUND		ROUTINES	HARDWARE
ROUTINE			INTERRUPT
# 3
		I/O PROCESSOR MODULE

Fig. 2-2 Routine scheduling

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Chapter 2

Organization of the Application Logic

TASK SYNCHRONIZATION

You can synchronize some of the different previously discussed routines with a set of semaphores (32) together with the instructions WAIT and SEND. With the WAIT instruction and one of the semaphore numbers (0-31) you can suspend the execution of a routine (task) until one of the other routines uses the SEND instruction with the same semaphore number. In this way you can synchronize the execution of one task with an event in another task.

Fig. 2-3 Task Synchronization

The WAIT (3) instruction suspends the execution of task A until the SEND (3) command in task B is executed on the same semaphore. Of course the exact point in time of the task's resumption also depends on its priority.

NOTE:

A SEND on a semaphore can be issued without a task waiting for this semaphore. The SEND instruction will simply be ignored. Any routine in WAIT status can only be released by the relative SEND instruction. The routine that holds the SEND instruction must be synchronized with the routine holding the WAIT status request.

IMPORTANT		You are not allowed to use the WAIT/DLY instructions in foreground, fast input
		and emergency routines

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Chapter 2

Organization of the Application Logic

Fig. 2-4 Routine priority and size

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Chapter 2

Organization of the Application Logic

Fig. 2-5 Steady Operation

Every 10 ms the system updates the I/O's, executes the all foreground routines and executes one of the background ones for 1 ms. Every 10 ms one of the background routines present will be executed in sequence. If a background routine takes less than 1 ms, it will be rerun from the start, until this time runs out. No routine will be interrupted.

Fig. 2-6

High Priority Interrupt Operation

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Chapter 2

Organization of the Application Logic

When emergencies occur or fast input routines have to be processed, the steady operation of the I/O processor will be interrupted and the high priority routines required will be executed immediately. Note that the steady execution may be interrupted anywhere during the execution of the I/O ring update, of the foreground logic or of the background logic.

Fig. 2-7 Low Priority Interrupt Operation

When low priority events occur, like consent request calls, part program Interface calls or even OEM softkey calls, the foreground routine and all other higher priority tasks will not be interrupted. These low priority routines will only run during the time available for background logic execution.

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Chapter 2

Organization of the Application Logic

BACKGROUND EXECUTION

There can be up to 12 background routines. The background routines are those with the lowest priorities among the routines making up the logic application and are executed in turn every 10 ms (Tick Plus) for 1 ms.

At each Tick Plus the integrated PLC updates the I/O's and the foreground routines.

Consensus routines, part program interfaces and OEM softkeys are enabled at system request and interrupt background execution.

After enabling all high priority routines at each Tick Plus, the system enables one of the background routines and lets it run for 1 ms.

At each Tick Plus the system enables a different background routine. The sequence of activation is determined by the number associated with the routine name. At the first Tick Plus the background routine 1 ($BACK1) is enabled, at the second the background routine 2 ($BACK2) and so on.

Once the last background routine has been enabled, the system again starts with the first.

Therefore an individual background routine is executed over several Tick Plus, alternating part of its code with that of other background routines in time slicing. If a background routine suspends its execution voluntarily by calling a function such as WAIT or DELAY or indirectly by calling system functions of the WAIT type, the remaining time up to the end of the millisecond is free for other system operations (processing a part program, displaying, etc).

If a background routines is shorter than 1 ms, this is executed several times during the Tick Plus. If the background task to be enabled is suspended at a new Tick Plus, no other background routine is executed and the millisecond reserved for it is used by the system.

Fig. 2-8 Background logic execution

Fig. 2.8 shows 3 background loops with total execution times of 3, of 0.5 and 2 ms respectively.

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Organization of the Application Logic

Supposing after foreground execution + I/O ring management the remaining time for each sampling is constant at 5 mSec, the above routine are executed in the following sequence:

Fig. 2-9 Background execution sequence

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Chapter 2

Organization of the Application Logic

As can be seen, at each cycle a different background routine is started, which means that a short background routine is executed more often than a long one.

Referring to the example, the repeat frequency of the 3 loops will be:

$BACK 1	90 ms
$BACK 2	30 ms
$BACK 3	60 ms

The formula for calculating the frequency of a background routine is:

duration of the background routine x number of background routines x 10

IMPORTANT		In this example it is assumed, that there are no interrupts (fast inputs, OEM
		softkey, requests form a part program or from the operator)

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Chapter 2

Organization of the Application Logic

PLUS ROUTINES DECLARATION

To make all the routines described before available to be used, they must be declared in the source program for the logic.

FOREGROUND routine ( 10 ms execution)

DTSK $FORE foreground routine body

ETSK

BACKGROUND routines (loop execution)

DTSK $BACK1 background routine body

ETSK

and so on, up to

DTSK $BACK12 background routine body

ETSK

FAST INPUT routines (on event execution)

DTSK $FIN1

fast input #1 routine body ETSK

DTSK $FIN2

fast input #2 routine body ETSK

DTSK $FIN3

fast input #3 routine body ETSK

DTSK $FIN4

fast input #4 routine body ETSK

EMERGENCY routines (on event execution)

DTSK $EMERGR recoverable emergency emergency routine body

ETSK

DTSK $EMERGNR unrecoverable emergency emergency routine body

ETSK

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Organization of the Application Logic

OEM SOFTKEY INTERFACE routine

DTSK $OEMSFTK

OEM Softkey interface routine body

ETSK

PART PROGRAM INTERFACE routines (on part program events)

DTSK $nCONMOV

body of consent to move routine ETSK

DTSK $nENDMOV

body of end of motion routine ETSK

DTSK $nMDECOD

body of M function decode routine ETSK

DTSK $nPSEUDO

body of pseudo axes decode routine ETSK

DTSK $nSPROG

body of S word decode routine ETSK

DTSK $nTPROG

body of T word decode routine ETSK

DTSK $nEOB

body of End Of Block routine ETSK

DTSK $nRQP

body of tool dimension offset interface ETSK

DTSK $nRQT

body of tool wear offset interface routine ETSK

DTSK $nTOU

body of tool life interface routine ETSK

DTSK $nQUTAST

body of interface routine for measuring cycles ETSK

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Organization of the Application Logic

CONSENT REQUEST routines (on softkey or MTB panel)

DTSK $n_CYCLE cycle start pushed

ETSK

DTSK $n_CYOFF cycle start released

ETSK

DTSK $n_HOLDON

Request to enter HOLD status

ETSK

DTSK $n_HOLDOF

Request to exit from HOLD status

ETSK

DTSK $n_RESET reset button pushed

ETSK

DTSK $n_SETMOD mode selected

ETSK

DTSK $n_PUTFMA manual feedrate selected

ETSK

DTSK $n_PUTFED

feedrate override value selected ETSK

DTSK $n_PUTRAP

rapid feedrate override value ETSK

DTSK $n_PUTSPE

spindle speed override value selected ETSK

DTSK $n_SELAXI

axis selected for manual motion ETSK

NOTE:

"n" indicates the process number (a number in the range 1...20)

END OF CHAPTER

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Chapter 3

I/O PROCESSOR /SYSTEM DATA AREAS

The I/O processor and the system share a data area in the dual ported memory of the I/O processor module. This data area contains an I/O image, global retentive variables (G), system status variables and 4 retentive tables with machine tool related data. Fig. 3-1 gives a detailed overview of all data areas on the I/O processor, which are available to the application logic.

Fig. 3-1 Memory areas available to PLUS

10 Series CNC PLUS Application Manual (11)

3-1

Chapter 3

I/O Processor /System Data Areas

SYSTEM STATUS FLAGS

There are 500 system variables. They all have the short format. The first 20 variables (SW 00-SW 19) are used to exchange some general system information between the logic program and the system. Since the purpose of these variables is predefined, they have predefined symbolic names. Most of the variables are read only to the logic (R/O). Only SW 03, SW 04 and SW 12 can be written and read by the logic (R/W). SW Variables can be managed as words (I) or as single bits (B) or both (B/I).:

	WORD	MNEMONIC		TITLE	ACCESS		PROT
	SW 00			RESERVED FOR FUTURE USE
	SW 01	S_SECURLEV		ACTIVE SECURITY LEVEL	I		R/O
	SW 02	S_CNINFO		NC STATE INFORMATION	B		R/O
	SW 03	S_HLS1		HOME LIMIT SWITCHES 1	B/I		R/W
	SW 04	S_HLS2		HOME LIMIT SWITCHES 2	B/I		R/W
	SW 05			RESERVED FOR FUTURE USE
	SW 06			RESERVED FOR FUTURE USE
	SW 07			RESERVED FOR FUTURE USE
	SW 08			RESERVED FOR FUTURE USE
	SW 09	S_PROCSEL		SELECTED PROCESS	I		R/O
	SW 10	S_SCRNSEL		SELECTED SCREEN	I		R/O
	SW 11	S_UNITS		CONFIGURED UNITS	B		R/O
	SW 12			RESERVED FOR FUTURE USE
	SW 13			RESERVED FOR FUTURE USE
	SW 14			RESERVED FOR FUTURE USE
	SW 15			RESERVED FOR FUTURE USE
	SW 16	S_NOWAIT		NO WAIT CALL COUNTER	I		R/O
	SW 17	S_CNCTYPE		CONTROL TYPE	B/I		R/O
	SW 18			RESERVED FOR FUTURE USE
	SW 19			RESERVED FOR FUTURE USE

Hereafter, all variables and their functions will be discussed in more detail.

R/W SYSTEM VARIABLE SW 01		S_SECURLEV
WORD	Title: Home Limit switches
SW 01	S_SECURLEV actually active security level value in the range of 0-6
	(see SECURITY chapter in User Manual)

3-2	10 Series CNC PLUS Application Manual (11)