Siemens SIMATIC NET PROFIBUS Wartungshandbuch PDF herunterladen (Seite 12)

Basic Steps in Creating a DP Application

DP Base Programming Interface for CP 5613/CP 5614

C79000-G8976-C108-01

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SIMATIC NET 1
DP Base Programming Interface 1
Purpose of the Manual 3
Validity of the Manual 3
Guide to the Manual 3
Contents 5
Procedure 10
Overview of PROFIBUS DP 13
The Advantages of DP 15
Distributed I/Os 16
Node Classes 16
DP Master Class 1 16
DP Master Class 2 16
DP Slave 17
Output Data 18
Input Data 18
DP application 20
Initialization 21
Parameter Assignment 21
Configuration 21
State of the Slave 21
Diagnostics 22
2.6 Modes of the DP Master 23
Setting the Operating Mode 24
2.8 Reliability of DP 27
Purpose of Control Frames 28
Creating Groups 28
Control Commands 29
2.10 Typical Sequences in DP 30
Receiving Diagnostic Data 31
DP/DPC1 prog 32
DP-V1 Master Class 2 (DPC2) 33
3.1 Functions and Data 38
Using the DP Database 40
Configuring Slave Data Areas 40
Activating the Watchdog 40
The Read Consistency Option 42
Reducing Load on the PC CPU 43
Possible Hardware Events 43
3.5 Fast Logic 44
Properties of Hardware Events 45
Properties of Software Events 45
3.7 Typical Sequences 47
Shutdown Sequence 48
Elements of a Polling Cycle 50
Initializing the Semaphores 53
Using Hardware Events 54
Clearing the Semaphores 55
Using Semaphores for DPC1 56
Clearing a Semaphore 57
Software) 58
Productive Operation 59
Polling Productive Operation 61
Initializing the Semaphore 62
Clearing the Semaphore 63
Multiple CP Operation 64
Multiple Application Programs 64
Multiple CPUs in one PC 64
Error Codes 65
Conventions in the Text 66
Header Files 67
Auxiliary Functions 69
Fast Logic 69
4.1.2 DP_start_cp 70
4.1.3 DP_reset_cp 71
4.1.4 DP_open 72
4.1.5 DP_get_pointer 73
4.1.6 DP_release_pointer 75
4.1.7 DP_close 76
4.1.8 DP_get_err_txt 78
4.1.9 DP_set_mode 79
4.1.10 DP_slv_state 81
4.1.11 DP_read_slv_par 83
4.1.12 DP_global_ctrl 85
4.1.13 DP_ds_read 87
4.1.14 DP_ds_write 90
4.1.15 DP_read_alarm 93
4.1.16 DP_alarm_ack 96
4.1.17 DP_get_actual_cfg 99
Parameters 100
Return Value 101
4.1.18 DP_enable_event 102
C79000-G8976-C108-01 103
Table continued on next page 105
4.1.19 DP_disable_event 107
4.1.20 DP_get_result 108
4.1.21 DP_get_cref 111
4.1.22 DP_init_sema_object 112
4.1.23 DP_delete_sema_object 114
4.1.24 DP_fast_logic_on 115
4.1.25 DP_fast_logic_off 116
Administrative Functions 118
Initialization Functions 118
Standard DP Functions 119
4.2.2 DPS_open 120
4.2.3 DPS_close 124
4.2.4 DPS_start 125
4.2.5 DPS_stop 126
4.2.6 DPS_get_baud_rate 127
4.2.7 DPS_get_gc_command 129
4.2.8 DPS_get_state 131
4.2.9 DPS_set_diag 133
4.2.10 DPS_get_ind 135
4.2.11 DPS_set_resp 140
4.2.12 DPS_calc_io_data_len 142
Overview of the Existing Data 143
Consistent Reading 144
Example of Consistent Reading 144
Reading without Consistency 145
General Notes 147
Writing is always consistent 148
Example of Consistent Writing 149
Uses of the Slave State 152
Overview 159
Example of Access 159
Example of Activation 162
Example of Deactivation 163
4.4 Error Codes 167
Meaning of the Errors 170
Description 171
Error_Decode = DP V1 172
Error_Code_1 173
Order of the Slave Data 175
Format of Data Words 175
Explanation 176
Possible Length 177
Byte 1 (Stationstatus_1) 179
Byte 2 (Stationstatus_2) 180
Byte 3 (Stationstatus_3) 180
Byte 4 (Diag. Master_Add ) 180
Bytes 5 and 6 (Ident_Number) 181
Structure 182
Byte 1 (Header Byte) 182
Extensions) 183
Byte 2 (Alarm_Type Variant) 184
Byte 2 (Status_Type Variant) 184
Byte 3 (Slot Number Variant) 184
Byte 5-63 186
Content of the Data Field 188
Channel Number 190
Type of Diagnostics 191
Definition 193
Byte Structure 194
Slave Type 195
Alarm_Mode 196
Add_Sl_Flag 196
Byte 1 (Station_status) 198
Byte 7 (Group_Ident) 199
Byte 8 (DPV1_Status_1) 199
Byte 9 (DPV1_Status_2) 200
Bytes 11 to n 201
Overview of the Structure 202
Structure of an ID Byte 203
Length Bytes 204
CP 5613/CP 5614? 207
Where to Get Help 217
Documentation 218
Who to Contact 218
Common Questions 218
SIMATIC Training Center 221
Glossary 227
User watchdog 237
Watchdog 237

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