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Rockwell Automation
Recording Equipment
1785 PLC-5
User Manual
Rockwell Automation 1785 PLC-5 User Manual Page 212
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Publicatio
n 1785
-UM012D
-EN-P -
July
2005
11-38
Communicating with Dev
ices on an Etherne
t Network
Perfor
mance:
Ether
net
PLC-5
Contro
ller to
Etherne
t
PLC-5
Control
ler
PLC-5 Contro
ller T
yped Writ
e - Packet Size
1
2
...
207
208
209
210
211
212
213
214
215
216
217
...
387
388
Enhanced and
1
Ethernet PLC-5
1
Programmable
1
Controllers
1
Important User Information
2
Summary of Changes
3
Summary of Changes 2
4
Table of Contents
5
Table of Contents 2
6
Table of Contents 3
7
Table of Contents 4
8
Chapter 12
9
Chapter 13
9
Chapter 14
10
Preparing Power-Up Routines
10
Chapter 15
10
Preparing Fault Routines
10
Table of Contents 7
11
Appendix C
12
Maximizing System Performance
12
Appendix D
12
Appendix E
13
Switch Setting Reference
13
Appendix F
13
Troubleshooting
13
Appendix G
14
Cable Reference
14
Using This Manual
15
Terms Used in This Manual
16
Manual Overview
17
Preface 4
18
Lay Out the System
19
Identifying Controller
20
Components
20
PLC-5/11 Controller
21
PLC-5/20 or -5/26 Controller
21
PLC-5/20E
24
Controller
24
PLC-5/40E
25
PROG (program)
27
REM (remote)
27
Programming Features
28
Using a Controller Channel
29
Using a PLC-5/40L, -5/60L
32
Programmable Controller
32
Selecting and Placing I/O
33
Selecting I/O Module
34
Placing I/O Modules in a
35
Placing System Hardware
37
Protecting Your Controller
39
Preventing Electrostatic
39
Discharge
39
Laying Out Your Cable
40
Laying Out Your
41
Backpanel Spacing
41
Grounding Your System
42
I/O Addressing Concept
45
I:014/12
46
Choosing an Addressing
47
18-and 16-point Example
48
32-point Example
49
Addressing
51
Block-Transfer Modules
51
Addressing Summary
51
Assigning Racks
52
Understanding PLC-5
54
Controller Memory
54
• data blocks within a file
56
• modules in an I/O chassis
56
Addressing File Types
57
Specifying Logical Addresses
61
Specifying Indirect Addresses
62
Specifying Indexed Addresses
64
Specifying Symbolic Addresses
65
Effectively Using
68
I/O Memory
68
Program scanning 5-2
69
Program Scanning
70
Transferring Data to
71
Controller-Resident I/O
71
Configuring the System
72
Communicating with Remote I/O
73
Introduction to Remote I/O
75
Designing a Remote I/O
76
Cable Design Guidelines
77
Configuring a Controller
78
Channel as a Scanner
78
Define an I/O Status File
79
Specify the Scan List
81
Communicating to a
83
Remote I/O Node Adapter
83
Block-Transfers of
87
Remote I/O Data
87
AdapterAdapter
88
Block-Transfer Sequence
89
Block-Transfer
91
Programming
91
Scanner Channels
93
Monitoring messages
95
Addressing the I/O
96
Status File
96
Not Used
97
Fault BitsPresent Bits
97
Communicating with a PLC-5
99
Adapter Channel
99
Communication to a
100
PLC-5 Adapter Channel
100
Configuring
100
Address, and Rack Size
101
IMPORTANT
104
Data Monitor screen
110
PLC-5 Supervisory Controller
112
Monitoring Remote I/O
117
Adapter Channels
117
Using This Chapter
119
Selecting Devices That You
119
Can Connect
119
Addressing and Placing I/O
120
Remote I/O racks
121
Transferring Data
122
Discrete Data Transfer
123
Transferring Block Data
124
Configuring the Controller
127
Monitoring Extended-Local
130
I/O Status
130
Selecting Devices That
133
You Can Connect
133
Link Design
134
Configuring the Channel
135
[Enter]
136
Using the Global Status
137
Flag File
137
Monitoring DH+
139
Communication Channels
139
Monitoring General Status
143
Estimating DH+ Link
144
Performance
144
Size and Number of Messages
145
Message Destination
146
Internal Processing Time
147
Application Guidelines
149
Choosing Between
151
RS-232C, RS-422A, and
151
Serial Port
152
Using Channel 0
152
Changing Modes
155
Configuring Channel 0
156
Monitoring Channel 0
172
Media and Cabling
175
Assigning Your IP Address
176
Network Addressing
176
Configuring Channel 2 for
176
Ethernet Communication
176
No. Enter further
177
See page 11-12
179
BOOTP Enable
180
BOOTP response not
180
1 = 10MB Ethernet
182
Using Advanced
183
Ethernet Functions
183
No Gateway
186
Using Domain Name
189
Using the Embedded Web
190
HTML Pages
196
Using Multihop Messaging
203
Multihop Examples
204
Communicating with
206
ControlLogix Devices
206
Interpreting Error Codes
207
Interpreting Ethernet Status
208
Monitoring Ethernet commands
210
Monitoring Ethernet replies
210
Considerations
211
PLC-5 Controller
212
Protecting Your Programs
213
Privileges
214
About Passwords and
214
Defining Privilege Classes
215
Assigning a Privilege Class
216
Assigning Read/Write
217
Privileges to a Program File
217
Privileges to a Data File
217
Programming Considerations
219
Extended Forcing
220
BTW instruction execution
221
BTR instruction execution
221
Increased Program Scan Time
222
I/O Force Privileges
222
Setting Up and Using
223
Using Special
228
Programming Routines
228
Priority Scheduling for
229
Interrupts and MCPs
229
Program Execution States
230
Rescheduling Operation
231
Defining and Programming
233
Interrupt Routines
233
Allowing or Inhibiting
236
Defining a Controller
236
Power-Up Procedure
236
Understanding
240
Controller-Detected Major
240
Fault in a Remote I/O Chassis
241
Defining a Fault Routine
242
Defining a Watchdog Timer
243
Programming a Fault
244
Setting an Alarm
245
Clearing a Major Fault
245
I/O rack fault
248
Monitoring Faults
249
Interpreting Major Faults
250
Interpreting Minor Faults
250
Monitoring Status Bits
251
Using Main Control Programs
253
Understanding How the
254
Controller Interprets MCPs
254
Configuring MCPs
255
Monitoring MCPs
257
Using a Selectable Timed
259
Interrupt
259
STI Application Example
260
Defining a Selectable
261
Timed Interrupt
261
Monitoring Selectable
262
Timed Interrupts
262
Using a Processor Input
263
Writing PII Ladder Logic
264
PII Application Examples
264
Design Considerations
266
Input Interrupt
267
Monitoring Controller
268
Input Interrupts
268
System Specifications
269
Memory Backup Devices
272
Processor Status File
275
• S:7/8-15 unused
277
S:13-S:24
283
S:26-S:35
284
S:36-S:78
285
S:79-S:127
286
Effects of Housekeeping Time
290
Input and Output Modules
292
I/O Backplane Transfer
292
Remote I/O Scan Time
292
Communication Rate
293
Number of Rack Entries
293
Block-Transfers
294
BT BT BT
296
Controller Time
297
Example Calculation
298
Performance Effects of
298
Online Operations
298
Effect of Inserting
299
Ladder Rungs at the
299
56K-word Limit
299
Using Program Control
300
Instructions
300
Appendix
301
Relay Instructions
302
Timer Instructions
303
Counter Instructions
304
Compare Instructions
305
Compute Instructions
307
Logical Instructions
314
Conversion Instructions
315
File Instructions
317
Diagnostic Instructions
319
Shift Register Instructions
320
Sequencer Instructions
321
Program Control Instructions
322
Block Transfer Instructions
325
ASCII Instructions
327
Bit and Word Instructions
330
L = number of FOR/NXT loops
334
Controller Switches
340
Switch 2
341
I/O Chassis Backplane
342
Extended-Local I/O Adapter
343
ATTENTION
344
Remote I/O Adapter Module
345
Extended-Local I/O
347
Adapter Module
347
(1771-ALX) Configuration Plug
348
Troubleshooting F-3
351
Ethernet Status Indicator
353
Remote I/O System
354
Adapter Module (continued)
356
ADAPTER
357
I/O RACK
357
Unexpected Operation
358
Suggested Action
359
F-12 Troubleshooting
360
Serial Cable Pin
362
Assignments
362
Connecting Diagrams
363
25-Pin Serial Port
364
Workstation
364
Programming Cable
365
Specifications
365
Cable - 1784-CP6
366
-CP5, or -PCM5 cable
366
Cable - 1784-CP10
367
Cable - 1784-CP11
368
Cable - 1784-PCM5
368
Ethernet Cable Connections
369
G-10 Cable Reference
370
Numerics
371
2 Index
372
Index 3
373
4 Index
374
Index 5
375
6 Index
376
Index 7
377
8 Index
378
Index 9
379
10 Index
380
Index 11
381
12 Index
382
How Are We Doing?
383
BUSINESS REPLY MAIL
384
Rockwell Automation
388
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