Honeywell Precision Pressure Transducers
PPT and PPTR User’s Manual
ADS-14052 Rev. 01/12
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reserves the right to make changes to any products or technology herein to improve reliability, function or design.
Honeywell does not assume any liability arising out of the application or use of any product or circuit described herein;
neither does it convey any license under its patent rights nor the rights of others.
PPT User’s Manual
Contents
0 USER MANUAL CONTENT ..................................................................................... 1
1 INTRODUCTION ....................................................................................................... 2
1.1
1.2
Product Overview ............................................................................................ 2
Hardware Description .................................................................................... 2
2 GETTING STARTED ................................................................................................. 3
2.1
2.2
2.3
2.4
2.5
2.6
2.7
Overview .......................................................................................................... 3
Equipment Needed ......................................................................................... 3
Terminal Program Settings ............................................................................ 3
Initial Turn-On Response ............................................................................... 4
Command Format ........................................................................................... 4
Step-By-Step Examples .................................................................................. 5
Command Functional Groups ........................................................................ 7
3 COMMANDS - QUICK REFERENCE ...................................................................... 9
4 FUNCTIONAL OPERATION .................................................................................... 13
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
4.10
4.11
Overview .......................................................................................................... 13
What Is Integration? ....................................................................................... 14
Pressure Reading Control ............................................................................... 14
Output Voltage Control ................................................................................... 16
Pressure Window Control ............................................................................... 16
Customized Pressure Range ........................................................................... 17
Setting Pressure Set Points ............................................................................ 18
PPT Analog Output Configurations ............................................................... 19
Command Illustrations ................................................................................... 20
Pressure Reading Decimal Position ............................................................... 24
PPT Addressing ............................................................................................... 25
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PPT User’s Manual
Contents (con’t.)
5 COMMANDS .............................................................................................................. 28
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
5.10
Command Format ........................................................................................... 28
Information Request Commands ................................................................... 29
Action Directing Commands ........................................................................... 29
Command Replies—General .......................................................................... 29
ASCII Format Replies ..................................................................................... 30
Binary Format Replies ................................................................................... 31
Command And Reply Sequencing .................................................................. 34
Command Errors ............................................................................................. 35
Command Summary Table ............................................................................. 37
Command Descriptions ................................................................................... 39
6 ELECTRICAL CONNECTIONS ................................................................................ 73
7 TIMING DIAGRAMS ................................................................................................. 75
8 SPECIFICATIONS ..................................................................................................... 78
9 DIMENSIONS ............................................................................................................ 80
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Figures
Figure 4.1
Figure 4.2
Figure 4.3
Figure 4.4
Figure 4.5
Figure 4.6
Figure 4.7
Figure 4.8
Figure 4.9
PPT Block Diagram .......................................................................................... 13
Pressure Reading Control ................................................................................ 15
Factory Set Output Levels ............................................................................... 16
User Modified Output Levels ........................................................................... 17
User Modified Pressure Span .......................................................................... 17
Custom Slope (X=) Options .............................................................................. 17
Custom Offset (Z=) Options ............................................................................. 17
Pressure Set Point Set ..................................................................................... 18
Deadband on Set Point ..................................................................................... 18
PPT Pressure to Analog Voltage ...................................................................... 19
PPT Pressure Readings and Analog Voltage Control ..................................... 19
Sensing Remote Analog Pressure .................................................................... 19
Integration (I=) Command, Example 1 ........................................................... 20
Integration (I=) Command, Example 2 ........................................................... 21
S2 Speed Shift Command Example ................................................................. 21
S5 Speed Shift Command Example ................................................................. 22
Deadband and Integration (DI) Command Examples ........................... 22 – 23
Idle Count (IC) Command Example ................................................................ 23
Synchronize Integration Cycles (SI) Command Example .............................. 24
RS-232 PPT Ring Network .............................................................................. 25
RS-485 PPT Multidrop Network ..................................................................... 26
Single PPT Command and Reply .................................................................... 34
Multiple PPT Network Command and Replies ............................................... 35
PPT Electrical Connector Pin Assignments .................................................... 73
Connection for RS-232 Operation and Analog Output ................................... 73
Connection for RS-485 Operation and Analog Output ................................... 74
Connection for Analog Output and Battery Operation ................................... 74
Connection for Computer Operation and
User Controlled Analog Voltage Output ...................................................... 74
Default Single Pressure Reading Timing Diagram ........................................ 75
Default Continuous Pressure Reading Timing Diagram ................................ 75
Continuous Pressure (with IC = 1) Timing Diagram ...................................... 75
Timing Diagram for 20 Readings Per Second ................................................. 76
Timing Diagram for 50 Readings Per Second ................................................. 76
Timing Diagram for 120 Readings Per Second ............................................... 76
PPT Case Outline ............................................................................................. 80
Electrical Connector ......................................................................................... 80
PPTR Case Outline .......................................................................................... 81
Figure 4.10
Figure 4.11
Figure 4.12
Figure 4.13
Figure 4.14
Figure 4.15
Figure 4.16
Figure 4.17
Figure 4.18
Figure 4.19
Figure 4.20
Figure 4.21
Figure 5.1
Figure 5.2
Figure 6.1
Figure 6.2
Figure 6.3
Figure 6.4
Figure 6.5
Figure 7.1
Figure 7.2
Figure 7.3
Figure 7.4
Figure 7.5
Figure 7.6
Figure 9.1
Figure 9.2
Figure 9.3
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