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RST Instruments RST Flexi-Mux, Инструкция по эксплуатации

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RST Flexi-Mux Instruction Manual 

 
 

ELM0029B 

RST Instruments Ltd. 

Page 16 

 

    EndIf 
  NextScan 

EndProg

 

 

A-2. 

4-W

IRE 

S

ERIAL 

S

WITCHING

 

Refer to Figure 5-4. 

Const nVW = 5 
Const A=1.40503E-03 

'log poly coefficients 3K therm

 

Const B=2.36939E-04 
Const C=1.01266E-07 
 

'\\\\\\\\\\\\\\\\\\\\\\\\\ DECLARATIONS ///////////////////////// 

Public Result,Bunits(nVW),VW_Temp(nVW) 
Public VW(nVW,6) 
Public Htz(nVW),Amp(nVW),S2N(nVW),NF(nVW),DR(nVW),Res(nVW) 
Public LnRTH 

' global vars from Sub SH

 

Public Bat_V 
Public Int_Temp 
Public kPa(nVW) 
Public i 
 
Units Bunits()=Bunits 
Units VW_Temp()= °C 
Units Int_Temp = °C 
Units Bat_V = Vdc 
Units kPa() = kPa 
Units Res() = 

Ω

 

Units Htz() = Hz 
 

'VWP Table 

DataTable (VWP_Table,1,-1 ) 
  Sample (1,Bat_V,IEEE4) 
  Sample (1,Int_Temp,IEEE4) 
  FieldNames("Panel_Temp") 
  Sample (nVW,Bunits(),IEEE4) 
  Sample (nVW,kPa(),IEEE4)  
  Sample (nVW,VW_Temp(),IEEE4)  
EndTable 
 

'\\\\\\\\\\\\\\\\\\\\\\\\\ SUBROUTINES ////////////////////////// 

Sub SH3k(resist,VW_DegC)

' returns C from AVW200 resistance measurement

 

  If resist <10 Then resist=10 
  If resist >1000000 Then resist =1000000 

'set upper and lower limits

 

  LnRTH=LN(resist)

' pre-evaluate transcendental for efficiency 

  VW_DegC=1/(A+B*LnRTH+C*LnRTH*LnRTH*LnRTH)-273.15 

'VW KPA & MPA PRESSURE 

TABLE 

EndSub 
 
EncryptExempt (200,200) 

'To Allow AVW200 to communicate to the CR300 (AVW 

does not work with PakBus encryption key)

 

 
'Main Program 
BeginProg 
  Scan (1,Min,0,0) 
    PanelTemp (Int_Temp,60) 
    Battery (Bat_V) 

Содержание RST Flexi-Mux

Страница 1: ...contained in this document RST Instruments Ltd reserves the right to change the information at any time and assumes no liability for its accuracy Copyright 2021 RST Instruments Ltd All rights reserved...

Страница 2: ...By A Initial Release 2012 Mar 23 TK TW B Removed all references to old Campbell loggers CR10X etc updated all schematics and photos added more schematic examples added an Appendix that includes CRBas...

Страница 3: ...er Programming 13 6 SPECIFICATIONS 14 SAMPLE PROGRAMMING 15 A 1 2 Wire Serial Switching 15 A 2 4 Wire Serial Switching 16 A 3 4 Wire Switching with Separate Excitation 17 A 4 8 Wire Series Parallel Sw...

Страница 4: ...each sensor An added feature of the RST Flexi Mux is that it contains internal transient protection on each individual line Unlike traditional multiplexers this negates the need for external transient...

Страница 5: ...in transient protection on every line safeguards against damaging power surges which can be caused by occurrences such as nearby lightning The Flexi Mux requires only two datalogger control ports one...

Страница 6: ...xcluding CR6 Vibrating Wire Interface up to 5 RST vibrating wire piezometers can be multiplexed Cascading each Flexi Mux permits a theoretically unlimited number of muxes to be chained together Thus m...

Страница 7: ...it on any flat surface or base plate The finished length including the mounting tabs is 20 7cm 8 15 Mounting holes are 17 9cm 7 07 apart FIGURE 4 2 FLEXI MUX DIMENSION 4 3 CONNECTION DETAILS Connectio...

Страница 8: ...d to accommodate a tie wrap to hold the lead wires The connectors are designed to be easily disconnected giving the flexibility to switch or move sensors Lead wires are attached using a standard screw...

Страница 9: ...the Flexi Mux connects to an available 12V port and a Ground terminal for power One control port is used for Reset and another is used for Clock If two control ports are not available depending on the...

Страница 10: ...st 1 ms long A delay typically 10 to 20 ms is inserted into the datalogger program between the beginning of the clock pulse and the measurement instruction to ensure sufficient settling time for the r...

Страница 11: ...g the RST Flexi Mux in conjunction with Campbell Scientific CR6 dataloggers Please note that the following sections are simply meant as an overview of the many ways an RST Flexi Mux can be used Many c...

Страница 12: ...Ltd Page 9 FIGURE 5 3 A CR6 CONNECTING A FLEXI MUX AND AN MPBX 5 3 2 4 Wire Serial Switching Below is a configuration of a CR310 connected to a Vibrating Wire CR310 CR300 and CR1000X require AVW200 w...

Страница 13: ...ith Separate Excitation Below shows separate excitation of a string of In Place Inclinometers IPI and Vibrating Wire using two different sets of Mux configurations Note Figure 5 5 depicts configuratio...

Страница 14: ...RST Flexi Mux Instruction Manual ELM0029B RST Instruments Ltd Page 11 FIGURE 5 5 FLEXI MUX WITH BIAXIAL IPIS AND VWP...

Страница 15: ...RST Flexi Mux Instruction Manual ELM0029B RST Instruments Ltd Page 12 FIGURE 5 6 FLEXI MUX IPI27050 SERIES...

Страница 16: ...Page 13 5 3 4 8 Wire Series Parallel Switching A basic parallel of two FlexiMUX s with VW connected to a CR6 FIGURE 5 7 FLEXI MUX WIRED IN PARALLEL TO SWITCH 8 WIRES 5 4 DATALOGGER PROGRAMMING For all...

Страница 17: ...ctive Levels max 2 0V Clock Active Levels max 2 0V Min Clock Pulse Width 1 ms Max Actuation Relay Time 20 ms Relay Operation Break before make Initial Relay Resistance closed 0 1 Ohm Max Switching Cur...

Страница 18: ...1 PTemp FP2 Sample nVW kPa IEEE4 Sample nVW Bunits IEEE4 Sample nThm VW_therm IEEE4 EndTable BeginProg Main Program Scan 1 Min 0 0 PanelTemp PTemp 60 Battery Batt_volt If TimeIntoInterval 0 30 Min The...

Страница 19: ...Vdc Units kPa kPa Units Res Units Htz Hz VWP Table DataTable VWP_Table 1 1 Sample 1 Bat_V IEEE4 Sample 1 Int_Temp IEEE4 FieldNames Panel_Temp Sample nVW Bunits IEEE4 Sample nVW kPa IEEE4 Sample nVW VW...

Страница 20: ...lClose Com1 PortSet SE2 0 CallTable VWP_Table EndIf NextScan EndProg A 3 4 WIRE SWITCHING WITH SEPARATE EXCITATION a IC7565B IC757B IC7560B IC7570 Series Refer to Figure 5 5 4 strings of IPI s to 1 MU...

Страница 21: ...1 IEEE4 Sample max_ipi_nodes ipi_temperature 1 1 IEEE4 EndTable DataTable IPI_String2 True 1 Sample 5 ipi_A 2 1 IEEE4 Sample 5 ipi_B 2 1 IEEE4 Sample 5 ipi_temperature 2 1 IEEE4 EndTable DataTable IP...

Страница 22: ...3 9 48230 ipi_sn 3 10 48229 ipi_sn 3 11 48228 ipi_sn 4 1 48256 ipi_sn 4 2 48255 ipi_sn 4 3 48248 ipi_sn 4 4 48247 ipi_sn 4 5 48246 ipi_sn 4 6 48245 Scan 1 Min 0 0 PanelTemp PTemp 60 Battery Batt_volt...

Страница 23: ...w 400ms for sensor to send response to CR6 buffer SerialInRecord ComC3 serial_test_tr H0054 0 H0D0A n_bytes_tr 01 If serial_test_tr R Then exit TR send loop if sensor responds ExitFor EndIf tr_com_err...

Страница 24: ...allTable IPI_String3 CallTable IPI_String4 EndIf If TimeIntoInterval 0 30 Min Then Enter loop every 30mins PortSet U2 1 Reset Delay 0 100 mSec For i 1 To 10 PulsePort U1 5000 Clock Delay 0 100 mSec Vi...

Страница 25: ...Sample nVW Bunits IEEE4 Sample nVW VW_Temp IEEE4 EndTable Define data tables DataTable IPI_GEN4_table 1 1 Sample 1 Batt_volt FP2 Sample 1 PTemp FP2 Sample 15 ipi_data 1 1 1 IEEE4 Presents the sensor d...

Страница 26: ...andard CDAB SerialOut ComC1 65534 TXO 0 CHR 13 1 0 Delay 0 1 Sec SerialFlush ComC1 Set Verify Modbus Addresses For i 1 To n_ipi up to the number of IPI sensors For j 1 To n_ipi Set device Modbus addre...

Страница 27: ...nits VW_Temp i VW i 6 Temperature Next i PortSet U2 0 CallTable VWire SW12 1 1 Power IPI ON Delay 0 10 sec For i 1 To 5 For j 1 To 5 Read A Axis B Axis and Temp starting from 0x30 register ipi_data i...

Страница 28: ...in Then Enter loop every 30mins PortSet C2 1 Reset Delay 0 500 mSec For i 1 To 10 PulsePort C1 5000 Clock Delay 0 100 mSec VibratingWire VW i 1 1 U3 1500 3500 1 0 05 60 A B C Htz i VW i 1 frequency Am...

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