Rockwell-automation 1771-DMC_DMC1_DMC4_DXPS Control Coprocessor User M Uživatelský manuál Strana 63
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- Tabulka s obsahem
- KNIHY
Hodnocené. / 5. Na základě hodnocení zákazníků
Chapter 5
(!" $!$%
5-3
Use the DTL library of commands to access real-time data from the data
table of a direct-connect PLC-5 programmable controller. The data is
transferred between the control coprocessor and the PLC-5 processor via
the connector interface between the two devices.
This section defines the available commands. For more details, see
Appendix B, Application Program Interface Routines.
Important: You must use the DTL_INIT function to initialize the
data-table library before using any data-transfer, data-definition, or
chassis-control functions
Configuration Functions
Use configuration functions to initialize the DTL software and establish an
internal data-definition table for data items. See Table 5.C.
Table 5.C
DTL Configuration Functions
Function What It Does Why You Need It When You Use It
$&% &+% &
&, &! &
!' '%& %&% & &, &!
& !$ *!' ' &! %
& % $#'$ '%& & ' &!
*!'$ "$!$ *!' %!' & ! * ! "$ "$!$
% & &! &! &
&, &! &
!$ & &$ %$ %!& *
""&! "$!$
#'$ !$ ! & &%
&% & &! $!
& &, &! &
! $ & &, &! & &$*
&! $'% !$ !&$ & &
!' ) &! % ! ! $
&'$ % & '$ ! &
&! % &&
&! & &, &! &
! && *!' ! !& !$
& &% & & &, &!
& !
*!' ) & &! " &$ ! !) * &! %
( & ! &
Read/Write Access Functions
Use read/write access functions to exchange data between the directly
connected PLC-5 programmable controller and the control coprocessor.
See Table 5.D. The read/write functions listed are synchronous to the
application program; and they are all control-coprocessor initiated.
The DTL read/write functions are the quickest ways for the control
coprocessor to access data in an attached PLC-5 programmable controller.
Every read or write interrupts the programmable controller’s ladder-
program scan for approximately 1 msec, regardless of the length of the
transfer; therefore, you should make fewer transfers with greater transfer
lengths rather than several small transfers. The amount of time that it takes
for the coprocessor to retrieve data and have it available for the application
program follows this linear formula:
Time (msec) = 1.2 msec + (0.012 msec x number of words)
How to Use DTL Functions
- 1
- Important User Information 2
- Summary of Changes 3
- Using This Manual 4
- Going Through This Manual 5
- Finding More Information 5
- Reporting Corrections 5
- Table of Contents 6
- Chapter 1 6
- Chapter 2 6
- Chapter 3 6
- Using the Programming 7
- Environment 7
- Using the Ethernet Interface 7
- Chapter 8 8
- Appendix A 8
- Using the PCBridge 10
- Software 10
- Chapter Objectives 11
- Product Overview 11
- ControlĆCoprocessor Modules 12
- Hardware Overview 13
- Modes of Communication 14
- Controller 14
- Standalone Mode 15
- Programming Overview 16
- ProgramĆDevelopment Software 17
- Programming Languages 18
- What You Need to Install 19
- Your Control Coprocessor 19
- Select a Power Supply 20
- Prevent Electrostatic 20
- Discharge Damage 20
- Coprocessor Battery 21
- Install the ControlĆ 21
- Disposing of the Battery 22
- Install the Keying Bands 23
- Set Switch Configurations 24
- Install the Control 25
- Coprocessor 25
- Chapter 2 26
- Wire the Fault Relay 28
- Apply Power to the 29
- Control Coprocessor 29
- Remove the Control 29
- What to Do Next 29
- Getting Started with the 30
- Select the 31
- Programming Interface 31
- Install the Software on Your 31
- Personal Computer 31
- Access the PCBridge 34
- Configure Communication 35
- Access and Use the OSĆ9 36
- CommandĆLine Interface 36
- Set Time for OSĆ9 37
- Configure the 38
- Configure System Memory 40
- Chapter 3 41
- Figure 3.13 41
- Configure the RAM Disk 41
- Figure 3.14 42
- View ControlĆCoprocessor 48
- Current Status 48
- Create a User Startup File 48
- Send a Text File to the 49
- Send the Text File to OSĆ9 50
- Find Other OSĆ9 Commands 52
- CreateaCTestProgram 53
- Compile a C Test Program 54
- Send a Binary File to the 55
- Confirm File Passage to the 57
- Create a BASIC 57
- Test Program 57
- Use an Example Application 58
- Program to Access the 58
- RAM Disk 58
- Chapter 4 59
- Developing Programs 61
- What Is the Application 62
- Program Interface? 62
- When to Use API Functions 62
- How to Use DTL Functions 63
- Conversion Functions 64
- Utility Function 65
- How to Use BPI Functions 66
- How to Use Message 67
- Instructions 67
- Chapter 5 69
- Table 5.G 69
- How to Use TAG Functions 70
- Read and Write Functions 71
- Lock/Unlock Functions 71
- How to Use CC Utility 72
- Synchronization Function 73
- Status Function 73
- Prepare Programs for 74
- DirectĆConnect Mode 74
- Sample C Program 75
- 76
- Sample BASIC Program 77
- Sample ControlĆLogic Program 81
- Connecting Ethernet to 83
- Addresses for the 84
- Modifying the Ethernet 85
- Configuration Files 85
- HOSTS.EQUIV File 86
- NETWORKS File 87
- PROTOCOLS File 87
- SERVICES File 88
- STARTINET File 91
- Password File 92
- Ethernet Hardware Address 92
- Configuring the 93
- Using the OSĆ9/Internet 93
- FTP Utility 93
- FTP Send Session 94
- FTP Get Session 97
- TELNET Utility 98
- Using the Internet Socket 100
- Library in C Programs 100
- Chapter 6 101
- !!!! 101
- !!!! 102
- INTERCHANGE Daemon 103
- Using the INTERD 103
- Allocation 104
- 105
- 105
- Using the SNMPD Daemon 108
- Using the Serial Ports 109
- Setting Up Communication 110
- Parameters 110
- Referencing OSĆ9 Serial 112
- Port Device Names 112
- Connecting to the 112
- Serial Port 112
- Using a Serial Port for ASCII 113
- Communication 113
- 114
- Using a Serial Port for 118
- RSĆ485 Communication 118
- Chapter 7 120
- RSĆ422 Communication 125
- Serial Expander Module 126
- ASCII Display 126
- Status for LEDs 127
- Product Specifications 128
- Product Compatibility 129
- ControlĆCoprocessor 129
- CSA Certification 130
- UL Certification 130
- 131
- Application Program Interface 132
- Library of Functions 132
- Using Pointers 133
- BPI_DISCRETE 134
- C Example 135
- BASIC Example 135
- References 135
- BPI_READ 136
- Description 137
- BPI_WRITE 139
- CC_DISPLAY_DEC 142
- CC_DISPLAY_EHEX 144
- CC_DISPLAY_HEX 146
- CC_DISPLAY_STR 148
- CC_ERROR 150
- CC_ERRSTR 152
- CC_EXPANDED_STATUS 154
- CC_GET_DISPLAY_STR 156
- 158
- Appendix B 158
- CC_PLC_BTR 159
- CC_PLC_BTW 162
- CC_PLC_STATUS 165
- CC_PLC_SYNC 167
- CC_STATUS 169
- DTL_C_DEFINE 171
- DTL_CLOCK 174
- DTL_DEF_AVAIL 176
- DTL_GET_FLT 178
- DTL_GET_WORD 180
- DTL_GET_3BCD 182
- DTL_GET_4BCD 184
- DTL_INIT 186
- DTL_PUT_FLT 188
- DTL_PUT_WORD 190
- DTL_PUT_3BCD 192
- DTL_PUT_4BCD 194
- DTL_READ_W 196
- DTL_READ_W_IDX 198
- Valid Definition Examples 199
- Invalid Definition Example 199
- DTL_RMW_W 201
- DTL_RMW_W_IDX 204
- DTL_SIZE 207
- DTL_TYPE 209
- DTL_UNDEF 211
- DTL_WRITE_W 213
- DTL_WRITE_W_IDX 216
- MSG_CLR_MASK 219
- MSG_READ_HANDLER 221
- Possible values are: 222
- MSG_READ_W_HANDLER 225
- MSG_SET_MASK 229
- BASIC Examples 230
- MSG_TST_MASK 231
- MSG_WAIT 233
- MSG_WRITE_HANDLER 236
- 0)6(6;4- 49803,7 237
- MSG_WRITE_W_HANDLER 240
- /(5'5:3,387/2+6 241
- MSG_ZERO_MASK 244
- TAG_DEF_AVAIL 246
- TAG_DEFINE 247
- TAG_GLOBAL_UNDEF 250
- TAG_LINK 252
- TAG_LOCK 254
- TAG_READ 256
- TAG_READ_W 258
- TAG_UNDEF 260
- TAG_UNLOCK 262
- TAG_WRITE 264
- TAG_WRITE_W 266
- Error Values 268
- 0)7(7>5-5:904,8 269
- #**1( (-,#'+ 271
- BASIC Function Codes 272
- Cable Connections 274
- Connecting to the 25ĆPin 276
- COMM1, 2, and 3 Ports 276
- Cable Length Requirements 277
- Cable Configurations 277
- Ethernet Port 278
- Using the PCBridge Software 279
- Edit Key Definitions 280
- Log Session to the Printer 281
- Toggle the Status Line 281
- Loading Memory Module 282
- Log On Remotely to 282
- OSĆ9 Terminal 282
- 283
- Appendix D 283
- Figure D.3 283
- Transfer List 283
- T) Modify Transfer List 283
- Modify Transfer List 284
- Modify Build List 284
- Using the Debugger 285
- Compiler Options 287
- Troubleshooting PCBridge 289
- Problems 289
- PCBridge Utilities 289
- Function 290
- Examples 291
- Functions 292
- See Also 294
- ASCII Character Codes 311
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