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H2N
HUST CNC H2N User Manual
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7 Ladder Diagram
7 - 3
Install the EPROM or FLASH-ROM to the CNC controller and turn on the power for
checking.
Fig 7.1 Flow Chart for PLC Editor Operation.
Start
Edit/Revise
Ladder Diagram
Compile and Print
Downlod to CNC
Burn into
FLASH-ROM
END
Ladder
OK?
Y
N
Start
Edit/Revise
Ladder Diagram
Compile and Print
Writing EPROM
Install To CNC
Unit
END
Ladder
OK?
Y
N
(FLASH-ROM)
(EPROM)
72
74
Table of Contents
Table of Contents
3
Introduction
7
Configuration
9
System Configuration
9
Installation and Dimension
11
Environmental Requirements
11
Cabinet Considerations
11
Thermal Design in a Cabinet
12
External Dimensions and Diagrams
13
Connecting Diagrams
19
Connector Type
19
Connector Designation
19
System Connecting Block Diagram
20
O Interface Connections
27
I/O Connector Pin Assignment
27
Input Signals
29
Output Signals
30
Interface between Cnc Controller and Plc
35
HUST H2N Series Status Signal S-Bits
35
S-Bit Signal and PLC Cycle Time Chart
37
Descriptions of S-Bits
37
Square Wave Signal with 0.75Sec On,0.25Sec off (S000)
37
Reset Key Strobe (S001)
37
Cycle Start Key Strobe (S002)
37
Square Wave Signal with Wave Period (S008~S011)
37
CNC Control Unit Alarm Signal (S016)
38
Key Strobe (S017)
38
Key Strobe for Key Being Pressed Twice in 0.5Sec (S018)
38
Cursor up Key Strobe (S020) Cursor down Key Strobe (S021)
38
Page up Key Strobe (S022)
38
Page down Key Strobe (S023)
38
Servo Motor Status (S064,S065,S088)
38
In Process Status Bit (S080)
38
Spindle Status Bit (S085)
39
Servo Motor Status (S088)
39
Key Signals from PC or MMI (S104~S111)
39
Battery (BT1,BT2) down Signal (S120~S121)
39
Key Strobe for Key Being Pressed down and Kept down
39
Ladder Simulation Mode (S127)
39
And Y-Axis Home Signal at Machine Coordinate=0 (S160~S161)
39
In-Position Signal for X and Y-Axis (S176~S177)
39
Direction of Motor Rotation (+/-) for X and Y-Axis (S192~S193)
40
Positioning Execution in PLC (S208~S209)
40
PLC Command Signal C-Bits
43
Machine Lock/Feed-Hold (C000)
43
Reset (C001)
44
Emergency Stop Signal (C002)
44
Cycle Start (C004)
44
Single Block (C006)
44
NC Alarm (C007)
45
Program Restart-1 (C011)
45
Program Restart-2 (C012~C013)
46
Dryrun (C015)
47
Cursor up and Cursor down (C020~C021)
47
Page up and Page down Key (C022~C023)
47
Option Stop (C026)
48
Option Skip (C027)
48
Speed Deceleration Selection for G31 Skip Function (C028)
48
Counter Status (C030)
49
PLC Ladder Simulation (C031)
49
M-, T-, S-Code Command Finish Signal (C032~C034)
49
Round Corner Non-Stop Operation (C036)
49
MPG Hand-Wheel Test Mode (C056)
50
Return to the Last Program Block (C057)
50
Program Edit and MCM Edit Function Disabled (C058~C059)
50
HOME Execution Command (C063) HOME Limit Switch Signals (C064~C065)
50
Specify Work Coordinate Group as Working Coordinate (C123)
51
Clear the Current Axial Work and Machine Coordinate to Zero
52
Spindle Control (C117)
52
Command Code for Program Selection from External Device (C120)
53
Command for Spindle Speed Control (In%) from External I/O Device (C121)
53
Axial Data Input Disabled in TEACH Mode (C128~C129)
53
DRO Mode Enabled (C144~C145)
53
Signal for Over~Travel (OT) Limit Switch (C160~C163)
54
Clear Error-Count (C192~C193)
54
Positioning Execution in PLC Program (C208~C213)
54
Special C-Bit for G28,G29 and G30 (C224~C225)
54
Axial Motion Command in JOG Mode (C228)
54
G01 Feed-Rate Adjustment by MPG Hand-Wheel (C229,C230)
55
Load File from EPROM/FLASH-Rom (C231)
55
Clear G54 Work Coordinates (C232)
55
Program Simulation Without V-Command and Encoder Feedback (C235)
55
MPG Hand-Wheel Feed Interrupt Mode (C242)
55
MMI (man Machine Interface) or LCD Screen in Sleep Mode (C243)
56
Suppressing Alarm ERROR-2 When Following Count>4096 (C244)
56
Re-Defined Keyboard Key (C245)
56
LCD Display Function Disabled (C247)
57
User Defined Keyboard Function Output (C255)
57
Description of PLC Register
57
Variables
67
Input and Output Signal (I-Bits & O-Bit)
70
Ladder Diagram
71
Introduction to Ladder Diagram
71
Interface Signal Definitions for PLC Ladder Diagram
71
Maximum Input/Output Point for PLC and PLC Editor
71
PLC and PLC Editor Graphical Symbols
72
Composition and Modification of a Ladder Diagram
72
EPROM Writer
75
Writing Ladder Program into EPROM and Flash-Rom
75
EPROM Installation
75
4
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HUST CNC H2N Specifications
General
Brand
HUST CNC
Model
H2N
Category
Controller
Language
English
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