Datalogic Star Manuel d'installation Page 45
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- Table des matières
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
MAIN CONTROL OBJECT
35
3
METHOD SETLOSTFRAMEBEHAVIOUR
PURPOSE
Sets the parameters managing the lost frames.
Even if data frames are numbered, they might be sent to the host PC in a wrong
order due to roaming (see chapter 4 in STARGATE™ installation manual for more
details about the RF system). One of the main tasks of STAR-Link™ is to sort frames
so that they are correctly sent to the application program.
Example
STAR-Link™ waits for the frame number 5 from the RF device with address 1. If the
frame number 6 is received before the frame number 5, the former is buffered and
not sent to the application program. Once the frame number 5 is received, it is sent in
the correct order to the application program together with frame number 6.
In case the base reset or the power going down accidentally causes the frame
number 5 loss, STAR-Link™ keeps on waiting for the lost frame while buffering the
other frames and stopping to send data from the device 1 to the application.
Thanks to the TimeNotify property it is possible to define a time after which the
network manager DLL starts a procedure making sure that frame 5 is not present in
any base station considering it as a lost frame.
When the missing frame is not found, the LostFrameEvent is raised. Then, using the
LostFrame method it is possible to define if sending the buffered frames to the
application or deleting them.
When the RF system is unattended and there is no user defining its behaviour in
case of lost frames, two parameters are provided to program the system.
The SendToPC parameter allows sending buffered frames to the PC or deleting
them; while the TimeGoingOn parameter allows setting a timeout after which the
system behaviour defined by the SendToPC parameter is automatically forced.
DESCRIPTION
SendtoPC: it is the default behaviour when one or more frame losses have occurred.
If it is set to TRUE and it has not received an answer within the TimeGoingOn time,
the base station frames following the lost one are sent to the container. On the other
hand, by setting the method to FALSE, the frames are deleted.
TimeNotify: it is the time (given in minutes) after which STAR-Link™ starts a
procedure making sure that one or more frames are lost. It starts counting from the
last frame sent from the RF device to the container. Default and suggested value is
1. Possible values: bigger than 0.
TimeGoingOn: it is the timeout (given in minutes) set to wait for the user's answer
before applying the sendtoPC defined behaviour. If TimeGoingOn is 0, STAR-Link™
keeps on waiting. If there has been a frame loss, the host network data managing will
hang on.
- STAR-Link™ 1
- CONTENTS 6
- 1 GENERAL INFORMATION 11
- 1.3 STAR-Link™ CONTENTS 12
- 1.4 INSTALLING STAR-Link™ 13
- 1.6 CONVENTIONS 14
- 2 USE AND FUNCTIONING 15
- 2.3 RF DEVICE ADDRESS 16
- USE AND FUNCTIONING 17
- Figure 2 - Class overview 18
- 2.4.1 Main Control Object 19
- 2.4.3 Device Collections 21
- 2.4.4 Base Station Object 22
- 2.4.5 Device Object 23
- 3 MAIN CONTROL OBJECT 24
- PROPERTY COMMPORT 25
- PROPRTY DEVICES 26
- PROPERTY MODE 27
- MAIN CONTROL OBJECT 29
- PROPERTY NETWORKSTATUS 30
- PROPERTY SATELLITES 31
- PROPERTY SYNCHRO 32
- PROPERTY TIMEOUT 33
- PROPERTY TIMER 34
- METHOD CLOSELINE 35
- METHOD CLOSENETWORK 36
- METHOD GETCONTROLVERSION 37
- METHOD GETDLLVERSION 38
- METHOD GETLOSTFRAMEBEHAVIOUR 39
- METHOD LOAD 40
- METHOD LOSTFRAME 41
- METHOD OPENLINE 42
- METHOD OPENNETWORK 43
- METHOD SAVE 44
- ETHOD SETLOSTFRAMEBEHAVIOUR 45
- EVENT ALIVEEVENT 47
- EVENT DATAEVENT 48
- EVENT DEVICEINFOEVENT 50
- EVENT ERROREVENT 51
- EVENT LOSTFRAMEEVENT 52
- EVENT SATCFGEVENT 53
- EVENT SLEEPSATEVENT 54
- EVENT STATUSEVENT 56
- PROPERTY COUNT 57
- PROPERTY ITEM 58
- PROPERTY SATELLITE 59
- METHOD ADD 60
- METHOD CLEAR 61
- METHOD REMOVE 62
- 5 DEVICE COLLECTION OBJECT 63
- PROPERTY DATALEN 64
- DEVICE COLLECTION OBJECT 65
- PROPERTY DEVICE 66
- PROPERTY DEVICEDATA 67
- 6 BASE STATION OBJECT 73
- PROPERTY BAUDRATERS 74
- PROPERTY BUFFERSIZE 74
- PROPERTY BUFFERTHRESHOLD 74
- PROPERTY DIRECT 75
- PROPERTY ENABLED 75
- PROPERTY FRAMELIFE 76
- PROPERTY INTERFACE 76
- PROPERTY MAXBACKOFF 77
- PROPERTY MINBACKOFF 77
- PROPERTY PID 77
- PROPERTY POWERSAVE 78
- PROPERTY PREAMBLELENGTH 78
- BASE STATION OBJECT 79
- PROPERTY SATID 83
- PROPERTY NEWSATID 84
- METHOD ALIVE 85
- METHOD GETCONFIGURATION 86
- METHOD GETSTATUS 88
- METHOD SETCONFIGURATION 90
- 7 DEVICE OBJECT 91
- ROPERTY RFMAXPROTOCOLVERSION 94
- DEVICE OBJECT 95
- METHOD DATAWRITE 96
- 8 ERROR CODES 98
- ERROR CODES 99
- 8.3 CLIENT ERROR CODES 100
- 9 PROPERTY PAGES 101
- 9.2 COLLECTION PROPERTIES 102
- A PROGRAMMING EXAMPLES 103
- STAR-LINK™ 104
- Figure 6 - Main window 104
- A.1.1 Network Menu 105
- A.1.2 Settings Menu 106
- PROGRAMMING EXAMPLES 107
- Figure 9 - Device network 108
- Figure 11 - Control settings 110
- A.1.3 Action Menu 111
- A.1.4 Help Menu 112
- A.1.5 Warning Messages 113
- Figure 15 - Main window 114
- A.2.1 Network Configuration 115
- Figure 18 - Property window 117
- CAUTION 118
- Figure 19 - Main window 118
- A.3.1 MainForm Mask 119
- A.3.2 Other Masks 120
- Figure 21 - Main window 121
- Figure 22 - Main window 122
- B CONTROL INTERFACE 123
- CONTROL INTERFACE 125
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