Siemens SITRANS LR 300 Manuel d'instructions Page 76
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Page 74 SITRANS LR 300 – INSTRUCTION MANUAL 7ML19985CL02
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Parameters
P799 Communications Control (F = 1)
This parameter determines the read/write access to parameters via remote
communication. Index 1 controls serial communications via the RS-485 port, (Modbus
only). Index 2 controls Profibus PA or HART.
To change an index value:
1. Press TOGGLE to open thesecondary index field: (you may need to press
TOGGLE twice, depending on your start point). The index fields are empty and
read – –.
2. Press the ARROW keys to scroll to the required index (or type in the
address).
3. Key in the index value required, and press ENTER to set the value.
Echo Processing Parameters (P800 to P807)
P800 Near Blanking (F = 0.4m)
Sets the amount of blanking as measured from the flange face and extending into the
measurement range. See Blanking on page 46.
Enter the value in units as set in P005.
Index Values Description
01
0 Read only
1 Read/write
2 Restricted access – read only except for P799 which is read/write
02
0 Read only
1 Read/write
2 Restricted access – read only except for P799 which is read/write
Notes:
• P799 is independent of P000. Even if P000 is locked, a communications master can
write to any parameter if P799=1, or can write to P799 if P799=2.
• P000 controls the lock access if you are using the Siemens Milltronics keypad hand
programmer and Dolphin, but it has no effect on Modbus.
•Press PROGRAM to toggle between RUN and PROGRAM mode.
•Press TOGGLE twice to open parameter fields.
Values
Range: 0 to 99999
Pre-set: 0.4m
Related parameter
P837 Auto False Echo Suppression
SITRANS LR 300.book Page 74 Monday, June 10, 2002 7:18 PM
- SITRANS LR 300 1
- Disclaimer of Liability 2
- Table of Contents 3
- General Information 7
- Performance 10
- Mechanical 10
- Approvals on page 10 11
- Specifications 12
- Programmer (remote keypad) 13
- Installation 15
- Beam Spreading 16
- Polarization Effect 16
- False Reflections 16
- Dimensions: Threaded Rod 19
- Dimensions: Shielded Rod 20
- Dimensions: Horn 21
- Dimensions: Waveguide 22
- Dimensions: Sanitary Horn 25
- Dimensions: Sanitary Rod 26
- Dimensions: Flanges 27
- Mounting 29
- Rod Assembly 30
- Rod Extension Requirements 30
- Mounting: Rod Assembly 30
- Mounting: Manhole Covers 31
- Mounting: Waveguide Antenna 32
- Smoothness 33
- Interconnection 35
- SITRANS LR 300 Wiring 36
- Communications Installation 37
- PC Connection 38
- Port Configuration 38
- Start Up 39
- Programming 40
- Hand Programmer 41
- Local Programming 41
- Key Programming Mode Run Mode 42
- Accessing PROGRAM Mode 43
- Accessing a Parameter 43
- Modifying a Parameter Value 44
- Accessing RUN Mode 45
- Quick Start Programming 45
- Operation 47
- Loss of Echo (LOE) 48
- Analog Output 49
- RUN/PROGRAM 50
- Application Examples 51
- Applications 52
- Parameter Enter 52
- Horn Antenna 53
- Digesters 54
- Parameter Descriptions 57
- P001 Operation (F = 3) 58
- P002 Material 58
- P004 Antenna (F = 240) 59
- P005 Units (F = 1) 59
- P006 Empty (F = 10m) 59
- P007 Span (F = 10m) 59
- P050 Tank Shape (F = 0) 60
- (F = – – – –) 63
- P060 Decimal Position (F = 2) 64
- Material Level 65
- Parameters 67
- Related Parameters 67
- P219 mA Output Fail-Safe 68
- P341 Run Time 68
- P342 Power-On Resets 68
- P343 Internal Temperature 69
- P346 Serial Number 69
- P700 Maximum Fill Rate 71
- P701 Maximum Empty Rate 71
- P709 Damping Filter 72
- P711 Echo Lock (F = 2) 72
- P712 Echo Lock Sampling 73
- P770 Serial Protocol (F = 1) 74
- P772 Baud Rate (F = 9.6) 75
- P773 Parity (F = 0) 75
- P774 Data Bits and Stop Bits 75
- P801 Range Extension (F = 5%) 77
- P805 Echo Confidence 77
- P806 Echo Strength 77
- P807 Noise 77
- Algorithm Parameter (P820) 78
- (P830 to P841) 78
- To change a breakpoint: 79
- (or when P837 = 0) 80
- Values (view only) 82
- 0.0000 to 99999 83
- P999 Master Reset 84
- Product ID (R40,064) 85
- Input/Output 86
- Format Word (R43,997) 87
- (R43,998) 88
- Communications: Data Types 89
- Text Messages 90
- Error Handling 91
- Communications 92
- Troubleshooting 93
- Operation Troubleshooting 94
- Maintenance 95
- Appendix I 97
- Appendix II 100
- Number Parameter Name Value 101
- Appendix III 103
- Appendix IV 104
- Appendix V 109
- Appendix VI 110
- HART Communicator 275: 111
- Supported HART Commands: 115
- Appendix VII: Profibus PA 116
- Bus Termination 117
- Power Demands 117
- Cyclic versus Acyclic Data 117
- Cyclic Data 117
- Appendix VII 118
- Status Word 119
- Diagnostics 120
- Acyclic Data 120
- Configuration Example: 120
- Profibus Level Device Design 121
- Transducer Block - Level 122
- Parameter Structure 123
- Linear conversion: 124
- Analog Input Function Block 124
- Device Management 125
- Physical Block 1 126
- Transducer Block 1 127
- Function Block 1 - Level 131
- Function Block 2 - Space 132
- Function Block 3 - Distance 133
- Function Block 4 - Volume 133
- Annex II, 1/0/6) 134
- Appendix VIII 136
- *7ml19985cl02* 140
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