National Instruments FP-3000 Instrukcja Użytkownika Pobierz pdf (Strona 51)

Chapter 3 Example Applications

FieldPoint FP-3000 User Manual 3-16

National Instruments Corporation

3. Set the HI_LIM parameter to 40. This is the high limit that triggers the

high limit alarm. The units are defined to be the same as

PV_SCALE,

which is degrees Celsius.

Figure 3-5. High Limit Alarm Parameters Dialog Box

4. Set up an interface card to receive the alarm. From the configurator,

drag the icon that represents your interface card (it might be named

something like “interface0-0”) onto the Function Block Application

window. Connect the Alarms output of the PID to the Alarms input of

the interface card.

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FieldPoint 1
FP-3000 1
Network Module User Manual 1
Important Information 3
Chapter 3 5
Chapter 4 6
Contents 10
About This Manual 13
FP-3000 Network Module 14
Overview 14
Function Blocks 16
PID Control 16
Block Instantiation 16
Interoperability 17
HotPnP (Hot Plug and Play) 17
Field Upgradability 17
Figure 2-5 21
DIN Rail Clip 21
Figure 2-9 25
Connect Power to the FP-3000 26
Power-On Self Test (POST) 27
LED Indicators 29
Updating the FP-3000 Firmware 32
Example Applications 36
Fieldbus Using FP-3000 37
Assign a Tag to the New Block 38
Select the Module and Channel 38
Set the Input Range 39
Scale the Reading 39
Set Up Scheduling 40
Bring the Block Online 41
Getting Started 41
Taking Temperature Readings 42
Create an FP-TC-120 Block 42
Controlling a Heating Element 45
Set the Output Range 46
Scale the Output 46
Instantiate a PID Block 48
Scale the PID 48
Tune the PID 50
Alarming 50
PV_SCALE 51
HI_ALM parameter. The 52
Block Reference 53
Types of Function Blocks 54
DI (Discrete Input) 55
DO (Discrete Output) 55
CDO (Complex Discrete Output) 55
Chapter 4 Block Reference 56
UNACKNOWLEDGED 59
ALARM_STATE/UPDATE_STATE 59
TIME_STAMP 60
Status Handling 60
Substatus 61
Target Mode 62
Actual Mode 63
Permitted Mode 64
Normal Mode 64
FP-3000 Specific Parameters 65
FIELDPOINT_CHANNEL 66
FIELDPOINT_MODULE 66
FP_AI_100_RANGE 66
FP_AI_110_RANGE 66
FP_AI_111_RANGE 66
FP_AO_200_RANGE 67
FP_CJC_SOURCE 67
FP_MOD_STATUS 67
FP_NOISE_REJECTION 67
VERSION_INFORMATION 69
Configuring the FP-3000 70
Write Lock 71
Troubleshooting 72
Appendix B Troubleshooting 73
I/O Module Problems 74
Fieldbus Parameters 78
Table C-1. Error Codes 80
BLOCK_RESET 81
CHECKBACK 81
CLR_FSTATE 82
CONFIRM_TIME 82
CONTROL_OPTS 83
CYCLE_SEL/CYCLE_TYPE 83
DD_RESOURCE 83
FEATURE_SEL/FEATURES 85
FF_SCALE 85
Table C-6 87
Hard Types 87
IO_OPTS parameter 90
NV_CYCLE_T 91
OP_CMD_CXO 92
OUT_HI_LIM 92
OUT_LO_LIM 92
OUT_SCALE 92
PV_FTIME 93
RCAS_OUT 94
ROUT_OUT 94
RS_STATE 95
SAFEGUARD_CL 95
SAFEGUARD_OP 95
SET_FSTATE 95
SHED_OPT 95
SHED_RCAS 96
SHED_ROUT 96
SIMULATE 96
SP_HI_LIM 96
SP_LO_LIM 96
SP_RATE_DN 97
SP_RATE_UP 97
STATUS_OPTS 97
UPDATE_EVT 99
WRITE_ALM 99
WRITE_LOCK 99
WRITE_PRI 99
XD_SCALE 99
Advanced Function 100
Block Behavior 100
BKCAL_IN 101
BKCAL_OUT 101
Remote Cascades 102
Fault State and Mode Shedding 103
Manual mode 104
Auto mode 104
Specifications 105
Technical Support Resources 106
Telephone and Fax Support 107
Glossary 108

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