background image

G

MAS

 

 

Gold

 

Maestro

 

Software

 

User’s

 

Manual

   

Software

 

User

 

Manual

 

XXXXXXXXXXXX(0.01)

 

 

1

3

 

Chapter 1:

 

About the G-MAS and this manual 

This

 

chapter

 

describes

 

the

 

G

MAS

 

product

 

and

 

the

 

organization

 

of

 

this

 

manual.

 

Persons

 

beginning

 

to

 

understand

 

the

 

G

MAS

 

and

 

program

 

it,

 

should

 

read

 

this

 

manual

 

carefully.

 

However,

 

experienced

 

G

MAS

 

users

 

may

 

omit

 

this

 

chapter.

 

1.1.

 

What is the G-MAS  

 

The

 

Gold

 

Maestro

 

 

G

MAS

 

is

 

an

 

advanced

 

multi

axis

 

machine

 

controller.

 

It

 

is

 

a

 

programmable

 

control

 

unit,

 

with

 

built

in,

 

ready

to

use,

 

standardized

 

functionalities

 

for

 

communications,

 

motions,

 

emergencies,

 

timing,

 

events

 

and

 

all

 

that

 

is

 

required

 

(and

 

desired)

 

to

 

implement

 

a

 

complete

 

multi

axis

 

motion

 

control

 

system.

 

The

 

figure

 

below

 

presents

 

the

 

structure

 

of

 

a

 

motion

 

control

 

system

 

based

 

on

 

the

 

G

MAS

 

and

 

Elmo’s

 

digital

 

drives.

 

This

 

system

 

is

 

based

 

on

 

the

 

following

 

three

 

layers:

 

 

Host

 

computer

 

(or

 

PLC

 

or

 

HMI

 

Panel)

 

 

G

MAS

 

 

Devices

 

(Digital

 

Drives,

 

I/O

 

controllers,

 

network

 

encoders

 

…)

 

 

The

 

machine’s

 

host

 

computer

 

(or

 

PLC,

 

HMI

 

panel)

 

typically

 

executes

 

the

 

interfaces

 

to

 

the

 

machine

 

operator

 

and

 

performs

 

high

level

 

management

 

and

 

machine

 

algorithms,

 

as

 

necessary.

  

Содержание Gold Maestro G-MAS

Страница 1: ...G MAS Gold Maestro Software User s Manual March 2011 Ver 1 0 www elmomc com...

Страница 2: ...m without prior consent in writing by Elmo Motion Control Ltd This document contains proprietary information belonging to Elmo Motion Control Ltd Such information is supplied solely for assisting user...

Страница 3: ...s Files 3 11 3 1 3 Project s Description Files 3 11 3 2 Functions Variables and Constants 3 12 3 3 C and Header Files 3 12 3 4 Wrapper functions 3 13 3 4 1 Hiding Complex and or Not Important Code Seg...

Страница 4: ...XXXXXXXX 0 01 1 2 4 3 The device network 4 53 4 4 Additional tools 4 54 4 4 1 KPA Studio 4 54 4 4 2 IP Configuration over USB 4 54 Chapter 5 The XYZ robot example 5 55 Chapter 6 Further Programming Ex...

Страница 5: ...mable control unit with built in ready to use standardized functionalities for communications motions emergencies timing events and all that is required and desired to implement a complete multi axis...

Страница 6: ...etwork device views only a very narrow axis I O portion of the overall system and therefore cannot create or control overall system sequences or multi axis synchronized motions The network devices req...

Страница 7: ...ld product family this can be found for example in the host communication MODbus Ethernet IP Device Network CANopen CANopen over EtherCAT safety PLCmotion library I Os interface circuits etc 1 3 What...

Страница 8: ...he G MAS and Gold Drives As a G MAS user you will need this application to configure your system network devices etc communicate with the G MAS and to perform a variety of features incorporated within...

Страница 9: ...dify them according to the structure of your own system Use the guidelines described within the following the table to properly modify this manual examples Your System Structure Necessary modification...

Страница 10: ...XXXXX 0 01 2 8 Your System Structure Necessary modifications for examples written for CAN Necessary modifications for examples written for EtherCAT G MAS with 1xGold drive over the CAN bus As above As...

Страница 11: ...e time to market of your project One of these guidelines is the concept of States Machine programming as you will see later on this manual It is one of few possible methods to implement machine sequen...

Страница 12: ...e of the project s directory respects the following guidelines It reflects the project application contents It has no spaces If it consists of few words each word starts with a Capital letter for easy...

Страница 13: ...various C functions All files should be named using the above file naming guidelines 3 1 3 Project s Description Files Elmo highly recommends that an application programmer should add some files to a...

Страница 14: ...word Global variables are allowed and recommended for variables accessed by more than one function They should be defined at the top of a C file in most cases the project s main C file The Global vari...

Страница 15: ...yMoveAbsolute dSpeed dPosition This function has a very simple interface can be easily used to create a motion as all you need to enter are values for Speed and Position but internally it will use the...

Страница 16: ...mstances the programmer or Elmo within its examples may define a new function that will have a simple interface with the program and will internally assume some defaults for the remaining functions ar...

Страница 17: ...ires a number of assumptions default values keeping previous values etc these assumptions must be clearly documented for the user It is strongly recommended that a Wrapper Function unless it was writt...

Страница 18: ...thods to write a program that will answer the above requirements For example multi tasking and interrupts Elmo has an extensive experience in the development of user applications We have acquired this...

Страница 19: ...nction is called This function intentionally starts the execution of the machine sequences and motions During the machine operation the MachineSequences function does not return to the main until the...

Страница 20: ...ns let s assume a TIMER_CYCLE 20ms From this point on the OS activates the MachineSequencesTimer every 20ms This timer function actually handles and manages the States Machine as explained below The M...

Страница 21: ...Immediately after termination is requested the while loop ends and MachineSequences calls to MachineSequencesClose to close everything that needs to be closed before returning to the main function to...

Страница 22: ...is will ensure that all the States Machines code as executed during this timer event will use the same values of input variables Why this is needed As the timer event is not necessarily synchronized w...

Страница 23: ...re proper synchronized and consistent operation Now let s look at the States Machines themselves Within Figure 3 below you can see that in the general case the MachineSequencesTimer function can handl...

Страница 24: ...iable giSubStateN In case a Sub State Machine see later for details is necessary this variable defines the current state of the Sub State Machine It is generally initialized by the MachineSequencesIni...

Страница 25: ...te that while theoretically unlimited parallelism and depth can be implemented the programmer is responsible to make sure that the worst case execution time of the overall MachineSequencesTimer functi...

Страница 26: ...old Maestro Software User s Manual Software User Manual XXXXXXXXXXXX 0 01 3 24 Figure 3 Typical MachineSequencesTimer function The next figure shows the details of the code within one of the States Ma...

Страница 27: ...tates Machines Please note that handling reentrancy and the termination request has been omitted from this drawing compared to the previous example in order to maintain simplicity Of course these two...

Страница 28: ...States Machine is executed it will reach the code relevant for this state and will check for end of motion If the axis is still moving the code will return without changing the State value so that th...

Страница 29: ...the Sub States Machine Actually this ends the explanation of the States Machines programming structure Shortly within this chapter after the next section about handling errors you will find a section...

Страница 30: ...mming practices for handling these errors To clarify it is impossible for us to provide a generic function to handle the errors as each machine requires different error handling process However there...

Страница 31: ...s We strongly recommend not using these bypasses Call the library functions without checking the Return Code Just ignoring it This will surely create a nicer and simpler code The assumption behind usi...

Страница 32: ...k 2000 0 Value of the Jerk sMove_Abs_in eDirection MC_POSITIVE_DIRECTION MC_Direction Enumerator type sMove_Abs_in eBufferMode MC_BUFFERED_MODE MC_BufferMode Defines the behavior of the axis sMove_Abs...

Страница 33: ...names of the C and header files including the wrapper functions that are always in pairs Exploring using the Eclipse the Sample c the main source file of the project we can see the file s header desc...

Страница 34: ...an occur at this phase as part of the definition but we prefer to perform all initialization within the suitable initialization functions as described in the n ext section Immediately after the Applic...

Страница 35: ...n appears Please note the comments header above the main function as well as above any other function in the code It provides details about the function such as version inputs outputs description etc...

Страница 36: ...lize communication and axes while Closing can be used to close them closing log files printing some message to the standard output etc Following these functions we see the MachineSequences It is docum...

Страница 37: ...r of the various functions appearing in the file is the order they will be called used starting from main to the other functions it calls and so forth The MachineSequencesInit initializes all variable...

Страница 38: ...unctions whose tasks are described in earlier chapters the next interesting function is EnableMachineSequencesTimer This uses system functions to enable the timer and to define the function triggered...

Страница 39: ...It is the function triggered periodically by the timer that actually executes the machine sequences the states machines It initially checks if Termination was requested and if reentrance incorrectly o...

Страница 40: ...G MAS Gold Maestro Software User s Manual Software User Manual XXXXXXXXXXXX 0 01 3 38 Then the next stage is...

Страница 41: ...ine is handled exactly as we described in the flow charts above In the Sample project you can see that the main states machine supports two states two tasks XY_HOME and XY_MOVE Each one of these state...

Страница 42: ...e of a states machine code The StateXYHomingFunction is a good example for a sub states machine code While the machine is in XY_HOME state the main states machine s value is XY_HOME this function will...

Страница 43: ...G MAS Gold Maestro Software User s Manual Software User Manual XXXXXXXXXXXX 0 01 3 41 Then the next stage is...

Страница 44: ...t for end of motions etc we find the function as an example SubStateXYHomingMoveToLimitFunction Please note how this function creates motion and not waiting for end of motion or any other wait and cha...

Страница 45: ...tion ends no delays no waits It will be called again at the next timer cycle 20ms in this example and so on Once both limits are set the sub state is modified to the next state and the function ends T...

Страница 46: ...more states functions but they are all written according to the above guidelines The Sample h is shown in the two diagrams below Note the functions prototyping general functions and states functions a...

Страница 47: ...3 45 This actually completes the review of the Sample project s code The SampleWrapper c and SampleWrapper h files are skeleton almost empty files to be filled with functions and definitions as may be...

Страница 48: ...odule User Projects c h Files gexe Files EtherCAT or CAN Bus User C Applications gexe Files User Files HMI or PLC Elmo EAS System Configuration GMAS Setup Motions Drives Setup Motions Drives Programmi...

Страница 49: ...that are not closely related to the axes motion sequences such as user interfaces image analysis barcode interfaces etc as maybe required for the machine In the situation where the host is a PC compu...

Страница 50: ...is used to develop and debug User C and C Programs for the G MAS Elmo decided to use the market leading Eclipse environment and not to integrate this task to the EAS in order to provide its user with...

Страница 51: ...y Elmo as part of the G MAS It automatically runs the G MAS firmware when power ON which is responsible for the following tasks TCP IP communication with the Host Process to Process communication with...

Страница 52: ...ach of the available Function Blocks Here is some brief information about the Function Block interfaces The API consists of a list of functions with input and output values For instance the MC_MoveAbs...

Страница 53: ...is sent The AxisREF is obtained via the GetAxisByNameCmd API function This function is to be called once per axis The user program either Internal or Remote can receive events that occur in the G MAS...

Страница 54: ...ased on a User Application program at the PC since such a program reduces the computational load of the Host reduces the TCP IP network load and includes enabling modular implementation of the overall...

Страница 55: ...d memory of the Host and the User Application program and they can communicate over it It is the user s responsibility to define the communication items what is to be communicated in what areas of the...

Страница 56: ...andards of this network Generally speaking the user does not need to know the details of the device network as all the details are automatically handled by the G MAS The exact list of protocols suppor...

Страница 57: ...G MAS Gold Maestro Software User s Manual Software User Manual XXXXXXXXXXXX 0 01 5 55 Chapter 5 The XYZ robot example TBD...

Страница 58: ...G MAS Gold Maestro Software User s Manual Software User Manual XXXXXXXXXXXX 0 01 6 56 Chapter 6 Further Programming Examples...

Страница 59: ...G MAS Gold Maestro Software User s Manual Software User Manual XXXXXXXXXXXX 0 01 7 57 Chapter 7 PC Software Installation and how to use TBD...

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