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L02CPU
Mitsubishi L02CPU User Manual
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249
CHAPTER 5 DEVIC
ES
5
5.2 Internal User Dev
ices
5.2.14 Link special register (SW)
5.2.14
Link special register (SW)
The Link
special re
gister (SW)
is a reg
ister that
stores vari
ous commu
nication
status a
nd detec
ted errors.
Because the
dat
a link inform
ation is
stored as nu
meric da
ta, error
location
s and cause
s can be
checked by
monitori
ng the link
special
register
.
MELS
EC-L
CC-Li
nk Sy
stem
Mast
er/L
ocal Mo
dule
User'
s Man
ual
250
252
Table of Contents
Default Chapter
3
Safety Precautions
3
Conditions of Use for the Product
9
Introduction
10
Relevant Manuals
11
Table of Contents
14
Manual Page Organization
19
Terms
20
Chapter 1 Basic Procedure for Programming
22
Part 1 Programming
22
System Configuration Example
23
Creating a Project
24
Creating a Program
25
Prior Knowledge for Creating a Program
25
How to Create a Program
26
Converting a Program
26
Writing a Project to the CPU Module
27
Formatting a Memory
27
Writing to the CPU Module
28
Checking an Operation of the CPU Module
29
Saving a Project
31
Chapter 2 Application of Programming
32
Memories and Files
32
Memories
32
Parameter-Valid Drive
35
Files
36
I/O Number
41
Concept of I/O Number Assignment
41
I/O Number Assignment
42
Scan Time Structure
44
Initial Processing
44
Refresh Processing of Input/Output Modules or Intelligent Function Modules
45
Program Operation
45
END Processing
46
Operation Processing of the CPU Module for each Operating Status
47
Operation Processing During Momentary Power Failure
49
Processing of Inputs and Outputs
50
Refresh Processing
50
Direct Processing
53
Interrupt Program
55
Executing Multiple Programs
60
Initial Execution Type Program
62
Scan Execution Type Program
64
Standby Type Program
65
Fixed Scan Execution Type Program
68
Changing the Program Execution Type
71
Boot Operation
73
Programming Language
75
Communications with Intelligent Function Modules
76
Part 2 Functions
79
Chapter 3 Cpu Module Functions
80
Function List
80
Constant Scan
82
Watchdog Timer (WDT)
84
Latch Function
85
Initial Device Value
87
Service Processing Setting
90
Output Mode at Operating Status Change (STOP to RUN)
95
Input Response Time Setting
96
Error Time Output Mode Setting
97
PLC Operation Mode at H/W Error Setting
98
File Password 32
99
Setting File Passwords
99
Password Authentication
104
Remote Password
106
Remote Operation
108
Remote RUN/STOP
108
Remote PAUSE
110
Remote RESET
112
Remote Latch Clear
113
Scan Time Measurement
114
Program List Monitor
116
Interrupt Program List Monitor
117
Local Device Monitor/Test
118
External Input/Output Forced On/Off
120
Executional Conditioned Device Test
123
Sampling Trace
131
Writing Programs in RUN Status
138
Online Change (Ladder Mode)
138
Online Change (Files)
139
Precautions for Online Change
140
Debug from Multiple Programming Tools
144
Simultaneous Monitoring from Multiple Programming Tools
145
Online Change from Multiple Programming Tools
146
Self-Diagnostic Function
147
Error Clear
152
LED Control Function
155
Methods for Turning off the Leds
155
LED Indication Priority
156
Module Error Collection Function
157
Latch Data Backup to Standard ROM
161
Latch Data Backup
162
Restoring Backup Data
165
Writing/Reading Device Data To/From Standard ROM
166
Module Model Name Read
167
CPU Module Change Function with SD Memory Card
168
Backup to SD Memory Card
170
Backup Data Restoration
178
Clock Function
182
Battery Life-Prolonging Function
184
Chapter 4 Display Unit Functions
185
Function List
189
CPU Monitor/Test
190
Device Monitor/Test
190
Device Clear
198
Forced On/Off
201
Scan Time Monitor
204
Built-In I/O Function Monitor
205
Error Display/Clear
209
CPU Settings
213
Clock Setting
213
Module Monitor/Test
215
Buffer Memory Monitor/Test
215
Module Settings
219
Initial Setting Change
219
User Message
221
Option Settings
222
Language Setting
222
Contrast Adjustment
223
Lighting Period Setting
224
Pop-Up Display
225
Chapter 5 Devices
227
Device List
228
Internal User Devices
230
Input (X)
233
Output (Y)
233
Internal Relay (M)
234
Latch Relay (L)
234
Link Relay (B)
234
Annunciator (F)
235
Link Special Relay (SB)
238
Edge Relay (V)
238
Step Relay (S)
239
Timer (T, ST)
240
Counter (C)
246
Data Register (D)
249
Link Register (W)
250
Link Special Register (SW)
251
Internal System Devices
252
Function Devices (FX, FY, FD)
252
Special Relay (SM)
254
Special Register (SD)
254
Module Access Devices
255
Intelligent Function Module Device
255
Index Register/Standard Device Register (Z)
257
Index Register (Z)
257
Standard Device Register (Z)
258
Saving and Restoration of the Index Register
259
File Register (R, ZR)
261
Extended Data Register (D) and Extended Link Register (W)
266
Nesting (N)
271
Pointer (P)
272
Local Pointer
273
Common Pointer
274
Interrupt Pointer (I)
275
Other Devices
276
SFC Block Device (BL)
276
I/O No. Specification Device (U)
276
Macro Instruction Argument Device (VD)
276
Part 3 Devices, Constants
227
Chapter 6 Constants
277
Decimal Constant (K)
277
Hexadecimal Constant (H)
277
Real Number (E)
278
Character String (" ")
278
Chapter 7 Convenient Usage of Devices
279
Global Device
279
Local Device
280
Appendices
286
Appendix 1 Parameter Setting
286
Appendix 1.1 List of Parameter Numbers
286
Appendix 1.2 PLC Parameter
288
Appendix 1.3 Network Parameter Setting
305
Appendix 1.4 Remote Password Setting
305
Appendix 2 CPU Module Processing Time
306
Appendix 2.1 Time Required for each Processing Included in Scan Time
306
Appendix 2.2 Factors that Increase the Scan Time
311
Appendix 3 Data Used in the CPU Module
314
Appendix 4 Character Codes Available in the Display Unit
316
Appendix 5 Differences between LCPU and Qnucpu
328
Appendix 5.1 Specification Comparison
328
Appendix 5.2 Precautions for Utilizing Programs
329
Appendix 6 Precautions for Using GX Works2
330
Appendix 7 Precautions for Using GX Developer
330
Appendix 8 Device Point Assignment Sheet
331
Index
332
Revisions
336
Warranty
337
4
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Mitsubishi L02CPU Specifications
General
Brand
Mitsubishi
Model
L02CPU
Category
Controller
Language
English
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