gsk GSK 25i PLC User Manual

This user manual describes all items concerning the operation of this CNC system in detail. However, it is impossible to give particular

descriptions for all unnecessary or unallowable operations due to length

limitation and products application conditions therefore, the items not

presented herein should be considered impractical or unallowable.

Copyright is reserved to GSK CNC Equipment Co., Ltd. It is illegal for any organization or individual to publish or reprint this manual. GSK CNC

Equipment Co., Ltd. reserves the right to ascertain their legal liability.

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GSK 25i Milling CNC System User Manual

Preface

Your Excellency,

We are honored by your purchase of this GSK 25i Milling Machining Center CNC System made by GSK CNC Equipment Co., Ltd.

This book is “PLC Programming and Connection” section of the User Manual Volume .

Special caution:

The power supply fixed on/in the cabinet is exclusively used for the CNC system made by GSK.

It can't be applied to other purposes, or else it may cause serious danger.

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Volume PLC Programming and Connection

Warning and Precaution

Accident may occur by improper connection and operation This system can only be operated by authorized and qualified personnel.

Please read this manual carefully before operation

Please read this manual and a manual from machine tool builder carefully before installation, programming and operation, and strictly observe the requirements.

This manual includes the precautions for protecting user and machine tool. The precautions are classified into Warning and Caution according to their bearing on safety, and supplementary information is described as Note. Read these Warnings, Caution and

Note carefully before operation.

Warning

User may be injured or equipment be damaged if operations instructions and procedures are not observed.

Caution

Equipment may be damaged if operation instructions or procedures are not observed.

Note

It is used to indicate the supplementary information other than Warning and Caution.

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GSK 25i Milling CNC System User Manual

Announcement

●This manual describes various possibilities as much as possible. However, operations allowable or unallowable cannot be explained one by one due to so many possibilities that may involve with, so the contents that are not specially stated in this manual shall be considered as unallowable.

Caution

●Functions, technical indexes (such as precision and speed) described in this user manual are only for this System. Actual function deployment and technical performance of a machine tool with this CNC system are determined by machine tool builder’s design, so functions and technical indexes are subject to the user manual from machine tool builder.

●Refer to the user manual from machine tool builder for function and meaning of keys on control panel.

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Volume PLC Programming and Connection

Precautions

■Delivery and storage

●Packing box over 6 layers in pile is unallowed.

●Never climb the packing box, neither stand on it, nor place heavy objects on it.

●Do not move or drag the products by the cables connected to it.

●Forbid collision or scratch to the panel and display screen.

●Avoid dampness, insolation and drenching.

■Open-package inspection

●Confirm that the products are the required ones.

●Check that the products are not damaged in delivery.

●Confirm that the parts in packing box are in accordance with the order.

●Contact us in time if any inconsistence, shortage or damage is found.

■Connection

●Only qualified personnel can connect the System or check the connection.

●The System must be earthed, and the earth resistance must be less than 0.1Ω.

The earth wire cannot be replaced by zero wire.

●The connection must be correct and firm to avoid any fault or unexpected consequence.

●Connect with surge diode in the specified direction to avoid damage to the

System.

●Switch off power supply before plugging out or opening electric cabinet.

■Troubleshooting

●Only competent personnel are supposed to inspect the System or machine.

●Switch off power supply before troubleshooting or changing components.

●Check for fault when short circuit or overload occurs. Restart can only be done after troubleshooting.

●Frequent switching on/off of the power is forbidden, and the interval time should be at least 1 min.

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GSK 25i Milling CNC System User Manual

Safety Responsibility

Manufacturer’s Responsibility

——Be responsible for the danger which should be eliminated and/or controlled on design and configuration of the provided CNC systems and accessories.

——Be responsible for the safety of the provided CNC systems and accessories.

——Be responsible for the provided information and advice for the users.

User’s Responsibility

——Be trained with the safety operation of CNC system and familiar with the safety operation procedures.

——Be responsible for the dangers caused by adding, changing or altering to the original CNC systems and the accessories.

——Be responsible for the failure to observe the provisions for operation, adjustment, maintenance, installation and storage in the manual.

All specifications and designs herein are subject to change without further notice.

This manual is reserved by end user.

We are full of heartfelt gratitude to you for supporting us in the use of GSK’s products.

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Volume PLC Programming and Connection

Contents

PLC PROGRAMMING...................................................................................................................			1
PART 1	PROGRAMMING.............................................................................................................		2
1 Sequence Program Creating Process ...................................................................................			3
	1.1	GSK25i PLC specifications.....................................................................................................	3
	1.2	What ’s a Sequence Program ................................................................................................	3
	1.3	Assignment of interface specifications step 1 ...............................................................	4
	1.4	Establishment of ladder diagram step 2 ........................................................................	4
	1.5	Sequence program debugging step 3 ............................................................................	4
2 Sequence Program..................................................................................................................			5
	2.1	Execution process of sequence program .............................................................................	5
	2.2	Repetitive cycle ........................................................................................................................	6
	2.3	Priority of execution(1st level, and 2nd level).........................................................................	6
	2.4	Sequence program structure..................................................................................................	7
	2.5	Processing I/O (input/output) signals ..................................................................................	8
	2.6	Interlocking ...........................................................................................................................	11
3	Address ...............................................................................................................................		12
	3.1	Machine →PLC address X ............................................................................................	13
	3.2	PLC→machine side address Y .....................................................................................	15
	3.3	PLC→CNC address G ....................................................................................................	16
	3.4	CNC→PLC address F ....................................................................................................	17
	3.5	Internal relay address R .................................................................................................	17
	3.6	Address of keep relay K .................................................................................................	18
	3.7	Addresses(A) for message selection ..................................................................................	18
	3.8	Address of counter C ......................................................................................................	19
	3.9	Address of timer T .........................................................................................................	19
	3.10	Address D of data table.................................................................................................	20
	3.11	Label address L .............................................................................................................	20
	3.12	Subprogram numbers P ...............................................................................................	20
4 PLC Basic Instruction ...........................................................................................................			21
	4.1	LD, LDI, OUT, OUTI command ............................................................................................	22
	4.2	AND, ANI command...............................................................................................................	22
	4.3	OR, ORI command ................................................................................................................	23
	4.4	ORB command .......................................................................................................................	23
	4.5	ANB command .......................................................................................................................	24
5 PLC Functional Instructions.................................................................................................			25
	5.1	END1 1st level sequence program end ........................................................................	26
	5.2	END2 2nd level sequence program end .......................................................................	27
	5.3	TMR Timer ........................................................................................................................	27
	5.4	TMRB fixed timer .............................................................................................................	28
	5.5	TMRC timer ......................................................................................................................	29
	5.6	DECB binary decode ......................................................................................................	31
	5.7	CTR counter .....................................................................................................................	32

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		GSK 25i Milling CNC System	User Manual
	5.8 CTRC counter .................................................................................................................		34
	5.9	ROTB binary rotation control ........................................................................................	36
	5.10	CODB binary code conversion ...................................................................................	38
	5.11	MOVE logical product transfer ....................................................................................	40
	5.12	MOVOR data transfer after logical sum ....................................................................	41
	5.13	MOVB transfer of 1 byte ............................................................................................	42
	5.14	MOVW transfer of 2 bytes .........................................................................................	43
	5.15	MOVN transfer of an arbitrary number of bytes .......................................................	43
	5.16	PARI parity check .........................................................................................................	44
	5.17	DCNVB extended data conversion ............................................................................	45
	5.18	COMPB binary compasion ..........................................................................................	47
	5.19	COIN coincidence check .............................................................................................	49
	5.20	DSCHB data search .....................................................................................................	50
	5.21	XMOVB binary indexed modifier data transfer .........................................................	51
	5.22	ADDB(addition)....................................................................................................................	53
	5.23	SUBB binary subtraction .............................................................................................	55
	5.24	MULB binary multiplication .........................................................................................	56
	5.25	DIVB binary division .....................................................................................................	58
	5.26	NUMEB definition of binary constant .........................................................................	60
	5.27	DIFU Edge Up detection .............................................................................................	61
	5.28	DIFD Edge Down detection ........................................................................................	62
	5.29	SFT shift register ..........................................................................................................	63
	5.30	EOR EOR ......................................................................................................................	64
	5.31	AND logical and ............................................................................................................	66
	5.32	OR logical or ..................................................................................................................	67
	5.33	NOT logical not .............................................................................................................	69
	5.34	COM common line control ...........................................................................................	70
	5.35	COME common line control end ................................................................................	71
	5.36	JMP jump .......................................................................................................................	71
	5.37	JMPE jump end ............................................................................................................	73
	5.38	CALL conditional subprogram call .............................................................................	73
	5.39	CALLU uncoditional subprogram call ........................................................................	74
	5.40	JMPB label jump 1 .......................................................................................................	75
	5.41	JMPC label jump 2 .......................................................................................................	76
	5.42	LBL label ........................................................................................................................	76
	5.43	SP subprogram .............................................................................................................	77
	5.44	SPE end of a subprogram ...........................................................................................	78
6	Ladder Writing Limit...........................................................................................................		79
PART 2	FUNCTION ......................................................................................................................		80
1	Preparations for operatoin .............................................................................................		81
	1.1	Emergency stop.....................................................................................................................	81
	1.2	CNC overtral signal ...............................................................................................................	82
	1.3	Alarm signal............................................................................................................................	83
	1.4	Interlock...................................................................................................................................	83

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	1.5	Operation mode selection.....................................................................................................	84
2	Manual operation...................................................................................................................		85
	2.1	JOG feed/incremental feed...................................................................................................	85
	2.2	MPG / Step feed .....................................................................................................................	86
3	Reference Point Return.........................................................................................................		88
	3.1	Manual reference point return ..............................................................................................	88
4	Automatic operation..............................................................................................................		91
	4.1	Cycle start/feed hold ..............................................................................................................	91
	4.2	reset .........................................................................................................................................	94
	4.3	Testing a program ..................................................................................................................	95
	4.4	Optional block skip.................................................................................................................	98
	4.5	Program restart.......................................................................................................................	99
5	Feedrate Control..................................................................................................................		101
	5.1	Rapid traverse rate ..............................................................................................................	101
	5.2	Override .................................................................................................................................	102
6	Auxiliary Function ...............................................................................................................		104
	6.1	Miscellaneous function ........................................................................................................	104
	6.2	Auxiliary function lock ..........................................................................................................	109
7	Spindle Speed Function......................................................................................................		111
	7.1	Spindle speed control mode ...............................................................................................	111
	7.2	Spindle speed arrival signal................................................................................................	113
	7.3	Rigid tapping .........................................................................................................................	114
8	Tool function........................................................................................................................		115
	8.1 T command tool change.........................................................................................................		115
9 Programming command .....................................................................................................			115
	9.1	Custom macro program .........................................................................................................	115
CONNECTION ...........................................................................................................................			118
1	GSK25i System Box Interface..........................................................................................		121
2	Operation panel interface.................................................................................................		122
	2.1	Sketch map of machine operation panel interface.............................................................	122
	2.2	GSK 25i CNC system communication interface XS21......................................................	122
	2.3	Emergency stop power-on interface ....................................................................................	122
3	I/O Interface .......................................................................................................................		123
4	Interconnection Graph .....................................................................................................		125
5	PC serial communication wire.........................................................................................		126
6	MPG Wiring .......................................................................................................................		127
7	Operation Panel Signal Line ............................................................................................		129
8	Ethernet Communication Connection.............................................................................		130
9	Connected with the Spindle Servo..................................................................................		132
10 Connected with the Spindle Converter .........................................................................			133
11 Connection Method of Z Brake, System Power-on Control ........................................			134
12 I/O Input, Output Signal..................................................................................................			135
	12.1 Connection method of input signal.....................................................................................		135
	12.2 Connection method of output signal ..................................................................................		136

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		GSK 25i Milling CNC System	User Manual
	12.3	Definition of input signal point ............................................................................................	137
	12.4	Definition of output signal point..........................................................................................	139
APPENDIX ......................................................................................................................................			141
1	Signal table(address order)................................................................................................		141
2	Contour installation dimension drawing...........................................................................		145

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PLC PROGRAMMING

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GSK 25i Milling CNC System User Manual

Part 1 Programming

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Volume PLC Programming and Connection

1Sequence Program Creating Process

1.1GSK25i PLC specifications

Specification of GSK25i PLC are as follows(see Table 1-1):

Table 1-1

Specification			GSK25i PLC
Programming method language			Ladder, command table
Number of ladder level			2
1st level execution period			8ms
Mean processing time of basic command			0.5(μs/step)
Program capacity			12000 steps
	Command		P 10
			Functional command 44
Internal relay R			1100 bytes R0 to R1099
Data table D			1860 bytes D0 to D1859
Meter	C		400 bytes C0 to C399 100PCS
Timer	T		200 bytes T0 to T199 100PCS
PLC alarm detection A			32 bytes(A0 to A31)
Keep relay		K	32 bytes(K0 to K31)
Label	L		9999 L1 L9999
Subprogram		P	512 P1 P512
Machine →PLC(X)			128 bytes X0 to X127
PLC→machine (Y)			128 bytes Y0 to Y127
CNC→PLC(F)			256 bytes F0 to F255
PLC→CNC(G)			256 bytes G0 to G255

1.2What ’s a Sequence Program

A sequence program is a program for sequence control of machine tools and other systems. The program is converted into a format to enable CPU execute encoding and arithmetic

processing, and stored into RAM. CPU reads out every instruction stored in the memory at a high-speed and execute the program by arithmetic operation

The sequence program is written firstly from ladder.

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GSK 25i Milling CNC System User Manual

1.3Assignment of interface specifications step 1

After deciding the control object specification, calculate the number of input/output signal points, create the interface specification.

For input/output interface signals, see Chapter 4.

1.4Establishment of ladder diagram step 2

Express the control operations decided by 25i ladder diagram. For the timer, meter, etc, which cannot be expressed with the functional instructions.

The edited ladder should be converted into the corresponding PLC instruction i.e. instruction list to store.

1.5Sequence program debugging step 3

The sequence program can be debugged in two ways: 1 Debug by simulator

Instead of the machine, connect a simulator (consisting of lamps and switches). Switch ON/OFF stands for the input signal state of machine, lamp ON/OFF for the output signal state.

2 Actual operation debugging

Debug sequence program through operating the machine. Do measures against the unexpected affairs before debugging.

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2Sequence Program

Since PLC sequence control handled by software and operates on principle difference from a general relay circuit, the sequence control method must be fully understood in order to design PLC sequence program.

2.1Execution process of sequence program

In general relay control circuit, each relay operates at approximately the same time, in the figure below for example, when relay A operate, the relay D and E operate at approximately the same time(when contacts B and C are off)., In PLC sequence control, each relay of circuit operates sequentially. When relay A operates, relay D operates, then relay E(see Fig.2-1). Thus each relay operates in sequence which can be written as a ladder diagram. (Programmed sequence).

A B

D

A C

E

Fig. 2-1(a)

Fig.2.1(b) and (c) illustrate operations varying from the relay circuit to PLC programs.

A C

B

A

C

Fig. 2-1(b)

A

C

A C

B

Fig.2-1(c)

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GSK 25i Milling CNC System User Manual

(1)Relay circuit

In Fig. 2.1(b) and (c), the operations are the same. Turning on A turns on B and C. Turning on C turns off B.(2) PLC program

In Fig.2.1(b), as in the relay circuit, turning on A turns on B and C, and after one cycle of the PLC sequence, turns off B. But in Fig.2.1(c), turning on A turns on C, but does not turn on

2.2Repetitive cycle

The PLC executes the ladder diagram from the beginning to the end . When the ladder diagram ends, the program starts over from the beginning. This is called repetitive operation.

The execution time from the beginning to the end of the ladder diagram is called the sequence processing time. The shorter the process time is, the better the signal response becomes.

2.3Priority of execution(1st level, and 2nd level)

GSK25i PLC consists of two parts: 1st level sequence part, 2nd level sequence part. They have different execution period.

The 1st level sequence part operates every 8 ms, which can deal with the short pulse signal with high-speed response).

The 2nd level sequence part operates every 8*n ms. Here N is a dividing number for the 2nd level sequence part. The 2nd level sequence part is divided into V part, and every part is executed every 8ms.

END1

1st level sequence part

Specifies the end of the

1st level sequence part

Division 1

Division 2

2nd level sequence program

END2

		Division n
		Specifies the end of the
Fig. 2-2		2nd level sequence part

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GSK 25i PLC is solely executed in PLC-AVR single chip, and the first 1ms of each 8ms is the communication time of CNC reading or writing PLC data. The fifth 1ms is the time that the PLC receives the system control signal F, X and uploads the control result data G, Y parameter to the external I/O interface X, Y , except for the time responding the interruption to exchange the data, the PLC executes the ladder operation at the rest time.

8 ms

8 ms

8 ms

1st level

3 ms

3 ms

3 ms

Division 1

Division 2

Division n

2nd level

CNC use

Fig. 2-3

After the last 2nd level sequence part (division n) is executed, the sequence program is executed

again from the beginning. Thus, when the dividing number is n, the cycle of execution is 8*n ms. The 1st level sequence operates every 8ms, and the 2nd level sequence every 8*n ms. If the steps of the 1st level sequence is increased, the steps of the 2nd level sequence operating within 4ms becomes

less, thereby increasing the dividing number and making the processing time longer. Therefore, it is desirable to program so as to reduce the 1st level sequence to a minimum.

2.4Sequence program structure

With the conventional PLC, a ladder program is described sequentially. By employing a ladder

language that allows structured programming, the following benefits are derived:

1.A program can be understood and developed easily

2.A program error can be found easily.

3.When an operation error occurs, the cause can be found easily.

Three major structured programming capabilities are supported:

1 Subprogram

A subprogram can consist of a ladder sequence as the processing unit.

Fig. 2-4

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GSK 25i Milling CNC System User Manual

2) Nesting

The Ladder subprograms can call the other ladder subprogram to execute the job.

	Main program			Subprogram 1			Subprogram 2
	Job A			Job A1			Job A11
	Job B						Job A12
				Job An

Fig. 2-5

3) Conditional branch

The main program loops and checks whether conditions are satisfied. If a condition is satisfied, the corresponding subprogram is executed. If the condition is not satisfied, the subprogram is jumpped.

Main program	Subprogram 1
				Process 11
		Process 1
State 1
				Process 12
State 2
		Process 2
	Fig. 2-6			Process 13

2.5Processing I/O (input/output) signals

Input signal processing:

CNC	CNC—PLC	PLC

				1st	level
				sequence
				part
		2nd sequence part
				2nd	level
		starting memory		sequence
2	nd	sequence part		part
input signal memory

Input signals from machine tool

8ms

IO interface

Fig. 2-7

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Output signal processing:

CNC		PLC	st
			1 level
	CNC—PLC
			sequence part
	Share memory
			2nd level
output memory from
			sequence part
machine tool

8ms

IO interface

Fig. 2-8

2.5.1 Input signal processing

1 Input memory of NC

The input signals from NC are loaded in memory of NC and are transferred to the PLC at intervals of 8ms. Since the 1st level sequence part directly refer to these signal and process operations.

2 Input signal memory to machine tool

The input signal memory stores signals transferred from the machine tool at intervals of 8ms period. Since the 1st level sequence part directly refer to these signal and process operations.

3 2nd level input signal memory

The 2nd level input signal memory is also called as 2nd level synchronous input signal memory. The stored signals are processed by the 2nd level sequence part. State of the signals set this memory synchronizes with that of 2nd level sequence part.

Input memory Signals from NC and machine tool are transferred to the 2nd level input signal memory only at the beginning of execution of the 2nd level sequence part. Therefore, the state of the 2nd level synchronous input signal memory does not change from the beginning to end of the execution of the 2nd level sequence part.

2.5.2 Output signal processing

1 NC output memory

The output signals are transferred form the PLC to the NC output memory at intervals of 8ms.

2 Output signals to machine tool

Output signal to the machine tool from PLC output signal memory to the machine tool at intervals of 8ms.

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GSK 25i Milling CNC System User Manual

Note:

The state of the NC input memory, NC output memory, input signals from machine, input/output memory signals to machine can be checked by using the PC self-diagnosis function. The self-diagnosis number specified is the address number used by the sequence program.

2.5.3 Synchronous processing the short pulse signal

1st program can process the short pulse signal. When the short pulse signal change is less than 8ms, i.e.when the system executes the 1st program, the input signal state can change to cause the followings.

Fig. 2-9

When A 0 and B1 1 A becomes 1, at the moment, the system executes the next ladder statement to make B2 1. so, B1 and B2 become 1.

A

R

R

B1

R

B2

END1

Fig. 2-10

When the medium relay R synchronously processes the signal A, B1, B2 are not 1 at the same time.

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2.5.4 Difference state of signals between 1st level and 2nd level

The state of the same input signal may be different in the 1st level and 2nd level sequences. That is, at 1st level, processing is performed using input signal memory and at 2nd level, processing is performed using the 2nd level synchronous input signal memory. Therefore, it is possible for a 2nd level sequence execution at the worst, compared with a 1st level input signal.

This must be kept in mind when writing the sequence program.

2nd division of 2nd level sequence part

Fig. 2-11

When the processing is 1st 8ms, A=1, and B=1 after 1st sequence part is executed. At the same time, 2nd sequence part is started to execute A=1 is stored to the 2nd sequence part and the 1st division of 2nd sequence part is executed.

When the processing is 2nd 8ms, A=0, and B=0 after 1st sequence part is executed. And then 2nd division of 2nd sequence part is executed, at this time, A is still 1. So C=1.

So, B and C are different.

2.6Interlocking

Interlocking is externally important in sequence control safety.

Interlocking with the sequence program is necessary. However, interlocking with the end of the electric circuit in the machine tool magnetic cabinet must not be forgotten. Even though logically interlocked with the sequence program (software), the interlock will not work when trouble occurs in the hardware used to execute the sequence program. Therefore, always provide an interlock inside the machine tool magnetic cabinet panel to ensure operator safety and to protect the machine from damage.

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GSK 25i Milling CNC System User Manual

3 Address

An address shows a signal location. Addresses include input/output signals with respect to the machine, the input/output signals with respect to the CNC, the internal relays, the meters, the keep relays, and data table. Each address consists of an address number and a bit number. Its serial number regulations are as follows:

Address regulations:

The address comprises the address type, address number and the bit number in the format as shown below:

Type: including X, Y, R, F, G K, A, D ,C, T

Address number: decimal serial number stands for one byte.

Bit number: octal serial number, 0 7 stands for 0 7 bit of byte of front address number

GSK25i PLC address type is as follows Fig.3-1

Emergency stop, jump and other high-speed signals

Machine to PLC				X					PLC to NC
								G
										25i
MTInput signal						Nesting
										CNC
PLC to machine									NC to PLC
				Y		PLC		F
Output signal

Fig. 3-1

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Table 3-1

Address	Address explanation	Address range
X	machine→PLC(128 bytes)	X0 X127
Y	PLC→machine(128 bytes)	Y0 Y127
F	CNC→PLC(256 bytes)	F0 F255
G	PLC→CNC(256 bytes)	G0 G255
R	Internal relay(1100 bytes)	R0 R1099
D	Data register(1860 bytes)	D0 D1859
C	Counter (400 bytes)	C0 C 399
T	Timer (200 bytes)	T0 T199
A	Timer preset data register (32 bytes)	A0 A31
K	Keep relay 32 bytes	K0 K31

3.1Machine →PLC address X

X addresses of GSK25i PLC are divided into two:

1.X addresses are assigned to IO input interface.

2.X addresses are assigned to the input press keys on MDI panel.

3.X addresses are assigned to other external interfaces, such as the spindle, MPG control signal input.

3.1.1Assignment of IO module X address

The addresses are from X9 to X119. Its type is INT8U, 111 types.

The signal specification of X addresses can be customized by customer according to the actual

operation. X addresses are used to connect the machine tool with the ladder. For the initial definition

of input address, see Chapter Four Connection.

3.1.2Assignment of MDI panel X address

The addresses are from X0 to X8, 9 bytes. They correspond to the press keys on MDI panel. The corresponding relationship between them and the press keys on the standard panel is as Fig. 3-2:

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GSK 25i Milling CNC System User Manual

		Table 3-2
INPUT KEY ON	PLC	INPUT KEY ON	PLC
OPERATION PANEL	ADDRESS	OPERATION PANEL	ADDRESS
Auto mode	X0.0	-Z	X3.5
Edit mode	X0.1	-4	X3.6
MDI mode	X0.2	-5	X3.7
Manual mode	X0.3	Spindle CW	X4.0
MPG mode	X0.4	Spindle stop	X4.1
Zero mode	X0.5	Spindle CCW	X4.2
DNC mode	X0.6	Spindle orientation	X4.3
USER1	X0.7	F0 0.001	X4.4
Single block	X1.0	25% 0.01	X4.5
Jump	X1.1	50% 0.1	X4.6
Machine lock	X1.2	100% 1	X4.7
Auxiliary lock	X1.3
+4	X1.4
+Z	X1.5
-Y	X1.6	Tool magazine infeed	X5.3
+5	X1.7	Tool retraction	X5.4
Dry run	X2.0	Tool change manipulator	X5.5
Overtravel release	X2.1	Tool magazine CW	X5.6
Optional stop	X2.2	Tool magazine zero	X5.7
Program restart	X2.3	Clamp/release	X6.0
+X	X2.4	USR2	X6.1
Rapid	X2.5	USR3	X6.2
Step	X2.6	USR4	X6.3
-X	X2.7	Feed hold	X6.4
Cooling	X3.0	Cycle start	X6.5
Lubricating	X3.1	Tool magazine CCW	X6.6
Chip removal	X3.2	Feedrate override, up to	X7.0-X7.4
		24-gear(no output light)
Working light	X3.3	Spindle override, up to	X8.0-X8.3
		16-gear no output light
+Y	X3.4	Emergency stop	X8.4

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3.1.3 MPG signal input X address

Table 3-3

	MPG signal input	PLC address
HDC0_STP MPG emergency stop signal		X121.0
HDC0_MX100 MPG federate override		X120.0
HDC0_MX10 MPG federate override		X120.1
HDC0_MX1	MPG federate override	X120.2
HDC0_5	5th axis	X120.3
HDC0_4	4th axis	X120.4
HDC0_Z	Z axis	X120.5
HDC0_Y	Y axis	X120.6
HDC0_X	X axis	X120.7

3.2PLC→machine side address Y

Y addresses of GSK25i PLC are divided into three:

1.Y addresses are assigned to IO input interface.

2.Y addresses are assigned to the indicators on MDI panel.

3.Y addresses are assigned to the indicators on MPG.

3.2.1 Y address of I/O output interface

The addresses are from Y8 to Y119. Its type is INT8U, 112 types.

The signal specification of Y addresses can be customized by customer according to the actual operation. Y addresses are used to connect the machine tool with the ladder. For the initial definition of input address, see Chapter Four Connection.

3.2.2 Assignment of IO module Y address

The addresses are from Y0 to Y7, 8 bytes. They correspond to the indicators on MDI panel, and their signal definitions cannot be changed by user.

Addresses and indicators are as follows Table.3-4:

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GSK 25i Milling CNC System User Manual

Table 3-4

OUTPUT KEY ON	PLC	OUTPUT KEY ON	PLC
OPERATION PANEL	ADDRESS	OPERATION PANEL	ADDRESS
Auto key indicator	Y0.0	-Z key indicator	Y3.5
Edit key indicator	Y0.1	-4 key indicator	Y3.6
MDI key indicator	Y0.2	-5 key indicator	Y3.7
Manual key indicator	Y0.3	Spindle CW key indicator	Y4.0
MPG key indicator	Y0.4	Spindle stop key indicator	Y4.1
Zero key indicator	Y0.5	Spindle CCW key indicator	Y4.2
DNC key indicaor	Y0.6	Spindle orientation key indicator	Y4.3
USER1 key indicaor	Y0.7	F0 0.001 key indicator	Y4.4
Single block key indicaor	Y1.0	25% 0.01 key indicator	Y4.5
Jump key indicator	Y1.1	50% 0.1 key indicator	Y4.6
Machine lock indicator	Y1.2	100% 1 key indicator	Y4.7
Auxiliary lock indicator	Y1.3	Tool magazine infeed key indicator	Y5.3
+4 key indicator	Y1.4	Tool retraction key indicator	Y5.4
+Z key indicator	Y1.5	Tool change key indicator	Y5.5
-Y key indicator	Y1.6	Tool magazine CW key indicator	Y5.6
+5 key indicator	Y1.7	Tool magazine zero key indicator	Y5.7
Dry run key indicator	Y2.0	Clamp/release tool key indicator	Y6.0
Overtravel release key indicator	Y2.1	USR2 key indicator	Y6.1
Optional stop key indicator	Y2.2	USR3 key indicator	Y6.2
Program restart key indicator	Y2.3	USR4 key indicator	Y6.3
+X key indicator	Y2.4	Feed hold key indicator	Y6.4
Rapid key indicator	Y2.5	Cycle start key indicator	Y6.5
Step key indicator	Y2.6	Tool magazine CCW key indicator	Y6.6
-X key indicator	Y2.7	X zero return indicator	Y7.0
Cooling key indicator	Y3.0	Y zero return indicator	Y7.1
Lubricating key indicator	Y3.1	Z zero return indicator	Y7.2
Chip removal key indicator	Y3.2	4th zero return indicator	Y7.3
Working light key indicator	Y3.3	5th zero return indicator	Y7.4
+Y key indicator	Y3.4	System alarms	Y7.6

3.2.3 MPG signal light output

MPG signal light output

Y120.0

3.3PLC→CNC address G

Addresses are from G0 to G255. Type: INT8U,256 bytes. G addresses are the signals from PLC to NC, and these signals have been defined in designing the CNC system and cannot be modified.

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Volume PLC Programming and Connection

The concrete is referred to Appendix 1.

3.4CNC→PLC address F

A ddresses are from F0 to F255. Type: INT8U,256 bytes. F addresses are the signals from NC to

PLC, and these signals have been defined in designing the CNC system and cannot be modified. The

concrete is referred to Appendix 1.

3.5Internal relay address R

The address area is cleared to zero when the power is turned on.

Type: INT8U, with 1100 bytes.

Fig. 3-2

Note: the addresses from R1000 are used by PLC. For example: ADDB, SUBB, COMB functional command operation result are output to the register:

#7			#6	#5	#4	#3	#2	#1	#0
R1000			Overflow					Negative	Zero

Fig. 3-3

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GSK 25i Milling CNC System User Manual

3.6Address of keep relay K

The area is used for the keep relays and PLC parameters. Since this area is nonvolatile, the

content of the memory do not disappear even when the power is turned off.

Type: INT8U, with 32 bytes

Fig. 3-4

3.7Addresses(A) for message selection

The address area is cleared to zero when the power is turned on.

Type: INT8U, with 32 bytes.

Fig. 3-5

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Volume PLC Programming and Connection

3.8Address of counter C

The area is used as storing current counting value in meter.

Type: 400 bytes.

C1 C100: count range: 0 65535, can set increase/reducing count, and the counting value does not disappear even when the power is turned off.

Fig. 3-6

3.9Address of timer T.

Type: 200 bytes.

T1 T100 The timing value does not disappear even when the system is turned off.

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GSK 25i Milling CNC System User Manual

Fig. 3-7

3.10Address D of data table

Each data register has 8-bit, two continuous data registers can store 16-bit data, four continuous data registers can store 32-bit data.

The content of the memory do not disappear even when the power is turned off.

Number of data table D0 D1859 1860 bytes.

Fig. 3-8

3.11Label address L

Label addresses are used to specify jump destination labels and LBL labels in JMPB instructions. Range: L0 L9999

3.12Subprogram numbers P

Subprogram numbers are used to specify jump destination subprogram labels and SP instruction subprogram labels in CALL instruction.

Range: P0 P511.

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