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- Strona / 266
- Spis treści
- BOOKMARKI
Oceniono. / 5. Na podstawie oceny klientów
230 Appendix A - Programmer’s Reference
Verify that the file handle is specified in a global variable so that you can reference it from the
Work() and Shutdown() routines.
EXAMPLE
The following example demonstrates a rs485_open()method that opens an RS-485 connection
with a baud rate of 9600.
int fd = rs485_open(9600);
rs485_setparams()
You can use the rs485_setparams() method in the Initialize() routine to set the operating
parameters of the RS-485 interface. You should call this method to initialize the RS-485 interface
immediately after opening it with the rs485_open() method.
SYNTAX
int rs485_setparams(int fd, unsigned int BaudRate, EDataLength
DataLength, EParity Parity, EStopBits StopBits);
The fd parameter is the file handle returned when the RS-485 interface was opened with the
rs485_open() method.
The BaudRate parameter specifies the baud rate at which RS-485 interface communicates with
the serial port.
The DataLength parameter specifies the data bit size to be used for messages sent by the RS-
485 interface. You can specify a bit size of 5, 6, 7, or 8 bits.
The Parity parameter specifies the parity bit to be used for messages sent by the RS-485
interface. A parity bit is an extra bit used to check for errors in groups of data bits transferred
between devices. You can specify a parity bit that is odd or even.
The StopBits parameter specifies the number of stop bits to be used for messages sent by the
RS-485 interface.
For more information on these options, see the FPMLibrary.h file in the
iLON/Development/eclipse/plugins/com.echelon.eclipse.ilon100.fpm_0.9.0/compiler/echelon/fpm
/include folder in your L
ONWORKS directory
This method returns the 0 upon success, and it returns -1 upon failure. A failure could occur if
another FPM is using the interface, or if the interface is not properly connected to the RS-485 port.
EXAMPLE
The following example demonstrates a rs485_setparams()method:
rs485_setparams(fd, 9600, eDL8Bit, ePNone, eSB1);
rs485_ioctl()
You can use the rs485_ioctl() method in the Initialize() routine to send commands to the
RS-485 interface.
SYNTAX
int rs485_ioctl(int fd, int cmd, int data);
The fd parameter specifies the file handle that was returned when the RS-485 interface was
opened with the rs485_open() method.
The cmd parameter specifies the command to be sent to the RS-485 interface. The data
parameter specifies the corresponding value to be used with the cmd parameter. The values for
the cmd and data parameters are defined in the FPMLibrary.h file in the
- SmartServer 2.0 1
- Table of Contents 3
- Preface 8
- Hardware Requirements 10
- SmartServer Requirements 10
- Related Reading 11
- Content 12
- Introduction 15
- FPM Types 16
- Creating and Deploying FPMs 16
- Quick-Start FPM Exercise 20
- 14 Introduction 28
- Programming Tools 37
- Importing FPM Projects 44
- Creating FPM Templates 55
- Creating a Model File 70
- Declaring Functional Blocks 72
- Using Include Directives 73
- Example Model Files 73
- Saving your Model File 76
- Other Command Switches 78
- Creating FPMs 79
- Creating FPMs Overview 80
- Creating New FPM Projects 81
- Creating an FPM 82
- Using UFPT Local Variables 89
- Writing an FPM Application 90
- Starting Timers 91
- Using the Start() Method 91
- Reading Data Point Values 95
- Reading Scalar Data Points 95
- Writing Data Point Values 97
- Writing an FPM Driver 100
- { 102
- Compiling an FPM 103
- Using Non-Latin Characters 104
- Debugging FPMs 105
- Using Wind River Workbench 106
- Using SNMP Support 116
- ONWORKS network. It 119
- FPM Deployment Overview 120
- Deploying FPM Applications 125
- Deploying FPM Drivers 125
- ONWORKS network 126
- ONWORKS connections 126
- ONWORKS connections, or 126
- ONWORKS 126
- ONWORKS channel, and then 128
- Commissioning FPM Devices 134
- Recommissioning FPM Devices 135
- Testing FPM Applications 136
- Connecting FPM Data Points 136
- ONWORKS Connections 137
- Creating Web Connections 141
- Updating FPMs 152
- Updating Device Interfaces 153
- Licensing Overview 160
- ONMARK ID 161
- Creating a Security DLL File 163
- Verifying the Lock ID 170
- Verifying the License Key 172
- Supplying FPMs to Customers 178
- Interface 181
- Translating Property Files 199
- Appendix A 217
- FPM Programmer’s Reference 217
- Overview 218
- Template Files 218
- Routines 218
- Initialize() 219
- Work() 219
- OnTimer() 220
- FPM Application 221
- FPM Driver 221
- Methods 222
- Changed() 223
- NotifyOnAllUpdates() 224
- Propagate() 224
- Write() 225
- ResetPriority() 225
- SetDpProperty (UCPTpriority) 230
- SetDpProperty(defOutput) 230
- UFPT Local Variables 231
- Timer Methods 235
- Expired() 236
- Stop () 237
- StopAllTimers() 237
- IsRunning() 237
- Reboot Method 238
- RS-232 Interface Methods 239
- RS-485 Interface Methods 243
- ONWORKS directory 244
- File Access Methods 247
- if(iTemp) 248
- Appendix B 251
- Checklist 251
- ONWORKS channel 253
- Appendix C 255
- FPM FAQ 255
- SmartServer FPM FAQs 256
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