Z-World XP8900 Manual de usuario Pagina 23
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PK2100
I/O Configurations s 3-5
software (see Chapter 4, System Development) provides the two thresh-
olds.
The universal inputs are protected against overloads between -48 and
+48volts. The analog resolution is 10 bits, providing approximately 1024
steps over the range 010 volts (07volts for PK2110/PK2130). Its
sensitivity is about 10 millivolts per step.
Figure 3-3 shows a schematic of a single universal input channel.
Each input uses a comparator driven by the signal and by an internal DAC
to measure the input voltage. The input resistor and capacitor filter out
high-frequency noise and provide protection against overloads. Clamp
diodes in the LM339A provide additional protection against overload.
The input has a high D.C. impedance unless one of the jumpers is con-
nected. If the excitation resistor is connected, the circuit provides an
excitation voltage or current to an external device. This is convenient for
measuring an external resistance such as a potentiometer or a temperature
sensor (Figure 3-4).
+3.3-kΩ excitation
+resistor
430-Ω resistor, 420 mA loop,
channel 6 only. Connect H5:78
0.01 µF
UEXP
value or fixed reference (
RR
)
+
comparator
LM339A
Jumpers
(H4, H5, H6)
Input
VCC
10 kΩ
22 kΩ
4.7 kΩ
+10-V reference
Figure 3-3. Universal Input Channel
3.3 kΩ
8 kΩ
+10-V reference
Temperature Sensor
3.3 kΩ
+10-V reference
Figure 3-4. Measuring Variable External Resistance
- Users Manual 1
- CONTENTS 3
- Software Reference 5-1 4
- Contents s v 5
- ABOUT THIS MANUAL 7
- Terms and Abbreviations 8
- Table 3. Icons 9
- PK2100x s About This Manual 10
- PK2100 OVERVIEW 11
- PK2100 Overview 12
- PK2100 Features 13
- PK2110 Features 13
- PK2120 Features 13
- PK2130 Features 13
- Options and Upgrades 13
- 1-4 s PK2100 Overview 14
- GETTING STARTED 15
- Initial PK2100 Setup 16
- Establishing Communication 17
- Running a Sample Program 17
- 2-4 s Getting Started 18
- I/O CONFIGURATIONS 19
- PK2100 Inputs and Outputs 20
- I/O Configurations s 3-3 21
- Universal Inputs 22
- Temperature Sensor 23
- +10-V reference 23
- Digital Inputs 24
- Counter 1 25
- Counter 2 25
- Jumper H7 installed 27
- Relay Outputs 29
- Digital Outputs 30
- Inductive 31
- D.C. in D.C. in 31
- Digital output 31
- 3-14 s I/O Configurations 32
- SYSTEM DEVELOPMENT 33
- Programming 34
- Virtual Driver 35
- Virtual Driver Services 36
- System Development s 4-5 37
- Virtual Driver Variables 38
- System Development s 4-7 39
- Downloading Code 40
- Attainable Baud Rates 41
- Z180 Serial Ports 41
- 4-10 s System Development 42
- SOFTWARE REFERENCE 43
- Driver Software 44
- Analog Input 45
- 5-4 s Software Reference 46
- Analog Output 47
- High-Speed DMA Counter 48
- Battery-Backed Clock 49
- 5-8 s Software Reference 50
- Software Reference s 5-9 51
- EEPROM Read / Write 52
- Flash EPROM Write 52
- Communication 53
- subdirectory 54
- Program Description 55
- TROUBLESHOOTING 57
- Out of the Box 58
- Dynamic C Will Not Start 59
- Dynamic C Loses Serial Link 59
- PK2100 Resets Repeatedly 59
- Common Programming Errors 60
- APPENDIX B: SPECIFICATIONS 61
- Hardware Dimensions 62
- Table B-4 64
- Header Pins Description 65
- Connectors 67
- POWER MANAGEMENT 69
- Power Failure Interrupts 70
- Heat Sinking 71
- C-4 s Power Management 72
- I/O MAP AND 73
- INTERRUPT VECTORS 73
- Address Name Description 74
- Table D-2. Write Registers 76
- Table D-3. Read Registers 78
- Address Bits Symbol Function 78
- Interrupt Priorities 80
- APPENDIX E: EEPROM 81
- Address Definition 82
- Field Calibration 84
- APPENDIX F: PLCBUS 85
- PLCBus Overview 86
- PLCBus Header 87
- Table F-2. PLCBus Registers 88
- Appendix F: PLCBus s F-5 89
- A1 A2 A3 Meaning 90
- Expansion Bus Software 91
- F-8 s Appendix F: PLCBus 92
- Appendix F: PLCBus s F-9 93
- F-10 s Appendix F: PLCBus 94
- Appendix F: PLCBus s F-11 95
- F-12 s Appendix F: PLCBus 96
- BATTERY 97
- G-2 s Appendix G: Battery 98
- Battery Cautions 99
- G-4 s Appendix G: Battery 100
- BOARD LAYOUT 101
- Index s I-1 103
- PK2100I-2 s Index 104
- Index s I-3 105
- PK2100I-4 s Index 106
- Index s I-5 107
- PK2100I-6 s Index 108
- Index s I-7 109
- PK2100I-8 s Index 110
- Index s I-9 111
- PK2100I-10 s Index 112
- Printed in U.S.A 113
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