GSK218M CNC System Connection and PLC Manual
6
Contents
VOLUME ONE PROGRAMMING................................………..12
1SEQUENCE PROGRAM CREATING PROCESS.......................................... 13
1.1 GSK218M PLC specification........................................................................................................13
1.2 What is a sequence program.........................................................................................................13
1.3 Establishment of interface specifications
（
step 1
）
...................................................................14
1.4 Establishment of ladder diagram
（
step 2
）
................................................................................14
1.5 Sequence program check
（
step 3
）
............................................................................................14
2SEQUENCE PROGRAM......................................................................... 15
2.1 Execution process of sequence program.....................................................................................15
2.2 Repetitive cycel................................................................................................................................16
2.3 Priority of execution(1st level, and 2nd level).................................................................................16
2.4 Sequence program structure..........................................................................................................17
2.5 Processing I/O (input/output) signals............................................................................................19
2.5.1 Input signal processing ...........................................................................................................................20
2.5.2 Output singal processing........................................................................................................................20
2.5.3 Syncrhonous processing short pulse signal .....................................................................................20
2.5.4 Difference o fstate of signals between 1st level and 2nd level.........................................................21
2.6 Interlocking..........................................................................................................................................22
3ADDRESS........................................................................................... 23
3.1 Addresses from Machine tool to PLC
（
X
）
...................................................................................23
3.1.1 Assignment of IO module X address....................................................................................................23
3.1.2 Assignment of MDI panel X address................................................................................................... 24
3.2 Address (Y) from PLC to machine tool...........................................................................................25
3.2.1 Assignment of IO module Y address...................................................................................................25
3.2.2 Assignment of IO module Y address....................................................................................................26
3.3 Address (G) from PLC to CNC.......................................................................................................27
3.4 Address (F) from CNC to PLC.......................................................................................................28
3.5 Internal relay address
（
R
）
...........................................................................................................29
3.6 Address of keep relay
（
K
）
...........................................................................................................29
3.7 Addresses(A) for message selection displayed on CRT............................................................29
3.8 Address of meter
（
C
）
...................................................................................................................30
3.9 Meter preset address(DC) ...............................................................................................................30
3.10 Timer addresses
（
T
）
....................................................................................................................30
3.11 Addresses of timer preset value
（
DT
）
.......................................................................................30
3.12 Address of data table
（
D
）
............................................................................................................31
3.13 Lable address
（
L
）
.........................................................................................................................31
3.14 Subprogram numbers
（
P
）
...........................................................................................................31
4PLC BASIC INSTRUCTION.................................................................. 32
4.1 RD, RD.NOT, WRT, WRT.NOT........................................................................................................33
4.2 AND, AND.NOT instructions.............................................................................................................33
4.3 OR, OR.NOT instructions.................................................................................................................34
4.4 OR. STK instruction...........................................................................................................................34
