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Simatic S7-300 CPU 31xC and CPU 31x S7-300
User Manual
Siemens Simatic S7-300 CPU 31xC and CPU 31x S7-300 User Manual Page 28
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Operating and display elements
2.2 Operating and display elements: CP
U 31x
CPU 31xC and CPU 31x, Technical data
2-12
Manual, Edition 08/2004, A5E00105475-05
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SIMATIC
1
CPU 31xC and CPU 31x
1
Technical data
1
Preface
3
Approvals
4
CE label
4
C tick mark
4
Standards
4
Documentation classification
5
Recycling and Disposal
6
Table of contents
10
Table of contents
11
Overview
13
Selecting and configuring
13
(1) Analog I/Os
18
Mode selector switch
19
Power supply connection
19
Differences between the CPUs
19
MAC-ADD.:
25
X1-X2-X3
25
X4-X5-X6
25
Communication
29
3.1.2 PROFIBUS DP
30
3.1.3 PROFINET (PN)
31
3.1.4 Point to Point (PtP)
33
3.2 Communication services
34
3.2.2 PG communication
35
3.2.3 OP communication
35
3.2.5 S7 communication
36
Properties
37
Reduction ratio
37
Send and receive conditions
37
3.2.7 Routing
38
Communication
39
3.2 Communication services
39
Number of routed connections
40
Requirements
41
Real installation
42
Configuration in STEP 7
42
3.2.8 PtP communication
43
3.2.9 Data consistency
44
Objectives in PROFINET
45
What is PROFINET IO?
45
Further Information
46
3.2.10.1 PROFINET IO System
47
3.2 Communication services
48
System Description PROFINET
48
Detailed Information
50
Chapter Content
51
Data exchange
53
Disconnecting
53
Communication interruptions
53
3.3 S7 connections
54
Connection points
55
Transition point
55
3.3 S7 connections
56
3.3 S7 connections
57
Example of a CPU 314C-2 DP
59
3.4 DPV1
60
3.4 DPV1
62
4.1.1 CPU memory areas
63
System memory
64
Retentive data in RAM
65
Memory concept
66
I/O process image
67
Memory concept
69
Local data
70
Properties of an MMC
71
MMC copy protection
72
Useful life of an MMC
72
4.2 Memory functions
73
4.2.3.2 Uploading blocks
74
Uploading blocks
74
4.2 Memory functions
75
Restart (warm start)
76
4.2.5 Recipes
77
4.2 Memory functions
78
Processing sequence
79
Function principle
81
5.2 Cycle time
84
Cycle and reaction times
85
5.2 Cycle time
85
Extending the cycle time
86
Process image update
87
5.2 Cycle time
88
5.2.3 Different cycle times
90
5.2.4 Communication load
91
Runtimes
93
Extending the OB1 cycle time
93
Tips and notes
95
5.3 Response time
96
5.3 Response time
97
Calculation
100
See also
100
Reducing the response time
100
Introduction
101
Cycle time
101
Response time
102
5.5 Interrupt response time
103
Signal modules
104
Process interrupt processing
105
Reproducibility
105
5.6 Sample calculations
106
Installation
107
User program
107
Calculating the cycle time
107
Cycle and reaction times
108
5.6 Sample calculations
108
Technical data of CPU 31xC
111
6.1 General technical data
112
6.2 CPU 312C
113
6.2 CPU 312C
114
Technical data of CPU 31xC
115
6.2 CPU 312C
115
Technological
117
Functions
117
Technological Functions
117
6.3 CPU 313C
118
6.3 CPU 313C
119
6.3 CPU 313C
120
Reference
123
6.6.2 Analog I/O
144
Measurement principle
145
Selection in STEP 7
146
(Software filter)
146
1 averaged measured value
147
Inputs not connected
148
Outputs not connected
148
6.6.3 Configuration
149
Parameters of standard DO
151
Parameters of standard AI
151
Parameters of standard AO
152
6.6.4 Interrupts
155
6.6.5 Diagnostics
156
6.6.6 Digital inputs
156
6.6.7 Digital outputs
158
6.6.8 Analog inputs
161
6.6.9 Analog outputs
163
Technical data of CPU 31x
167
7.1 General technical data
168
7.2 CPU 312
169
7.2 CPU 312
170
Technical data of CPU 31x
171
7.2 CPU 312
171
7.3 CPU 314
174
7.3 CPU 314
175
7.3 CPU 314
176
7.4 CPU 315-2 DP
179
7.4 CPU 315-2 DP
180
7.4 CPU 315-2 DP
181
7.5 CPU 315-2 PN/DP
185
7.5 CPU 315-2 PN/DP
186
7.5 CPU 315-2 PN/DP
187
7.6 CPU 317-2 DP
192
7.6 CPU 317-2 DP
193
7.6 CPU 317-2 DP
194
7.7 CPU 317-2 PN/DP
199
7.7 CPU 317-2 PN/DP
200
7.7 CPU 317-2 PN/DP
201
Appendix
207
SFC 20 "BLKMOV"
209
SFC 54 "RD_DPARM"
209
New response by the CPU
210
Appendix
211
Replacing a CPU 31xC/31x
212
Consistent data
213
A.1.10 PG/OP functions
214
CPU 317
215
Procedure
216
Glossary
217
See PROFINET CBA
218
Glossary
219
See Communication processor
219
Data, temporary
220
Default Router
220
Determinism
220
Device Name
220
See System diagnostics
221
See Switch
224
See Fast Ethernet
224
See Slave
227
See SIMATIC NCM PC
227
See Organization blocks
228
See SIMATIC PC Station
229
See Programming device
229
See PROFIBUS International
229
PROFINET
231
PROFINET ASIC
231
PROFINET CBA
231
PROFINET Component
231
PROFINET Device
231
See PROFINET Device
233
See Ground
233
See Master
235
See Proxy
236
See Timers
237
See Interrupt, time-of-day
237
See Operating system
238
See STEP 7
238
Index
242
Index
243
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