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SapIP – IRT Instruction Manual               1/23/2017 

 

 

 

Page 30 

 

 

Dynamax, Inc. 

8.1

 

 Send Identification Command (aI!) 

-

 

Response is “213DYNAMAX SP IRT100  36”. Thus will be, Address 2, then compatibility 13, 
company Dynamax, then sensor model SP IRT, then version “100” , then serial number “ 36”.  See 
SDI-12_Specification_1.3_January_3_2012 section 4.4.2. 

8.2

 

 Start Measurement Command (aM!) 

-

 

Table 9 – ttt = specified time will be 0.003 seconds, measurement nominal time is 2 seconds, two 
values are returned. The response will be as follows: “a0032(CRLF)” then followed in two seconds 
with the service request. 

-

 

At this time, the measurement is 

NOT

 averaged. Instead it’s just like a single sample when using 

the radio module. So the steps are: first the charger will be turned off, then the sensor is powered 
up, and a single sample is taken and discarded. Lastly, after a delay another sample is taken and 
recorded, then the sensor will be powered down and charging will be resumed. The whole process 
takes 2 seconds. The FFT filters in the sensor will stabilize the measurements.  See SDI-
12_Specification_1.3_January_3_2012 section 4.4.5. 

8.3

 

Aborting Measurements is NOT Supported 

-

 

CPU is fully engaged in the measurement and cannot sense a “break” command during the 2 
second cycle.  See SDI-12_Specification_1.3_January_3_2012 section 4.4.5.1. 

8.4

 

 Service Request (a<CR><LF>) 

-

 

Feedback that the measurement is complete then returns 2 seconds after the measurement 
command “a(CRLF)”.  See SDI-12_Specification_1.3_January_3_2012 section 4.4.6. 

8.5

 

 Send Data Command (aD0! . . . aD9!) 

-

 

The response will be the object temperature followed by the ambient temperature in one line. For 
example: “a +22.04 +21.34(CRLF)”. See SDI-12_Specification_1.3_January_3_2012 section 4.4.8. 

8.6

 

 

Requesting a Cyclic Redundancy Check (CRC)

 

-

 

If desired a CRC check can be added to a measurement response. The ‘Start Measurement’ 
command has a ‘C’ added which enables the CRC. As in “aMC!”, any subsequent send data 
command( aD0!) will have a 16bit CRC added at the end.  See SDI-
12_Specification_1.3_January_3_2012 section 4.4.12.   

 

 

Summary of Contents for SapIP-IRT

Page 1: ...ailed collection of instructions on How to set up collect data and make full application of the SapIP IRT sensor Created 12 14 2017 Version 8 4 8 4 Changes from 8 3 Added quick start guide 1 3 pg 15 Drip loop on power wire Sec 4 pg 22 Changed wiring for SDI 12 better cable and color code Sec 4 3 pg 24 ...

Page 2: ...f Contents Topic I Introduction II General Specifications III Assembly and Mounting Procedures IV Sequential and Functional Descriptions V Updating Logging Interval Using XCTU VI FAQs Frequently Asked Questions VII Troubleshooting VIII Appendix A Data Output Packets ...

Page 3: ...odes to be distributed throughout a field and for its recorded data to be collected with a coordinator module then stored in a logger or transmitted to a display or controller There are several means of collecting the IRT s temperature node data communicating in a public ZIGBEE data network or with a serial port or by analog voltage signals There are three versions SAPIP IRT Zigbee Node Digital Da...

Page 4: ...T nodes can be connected wirelessly with a single GSM modem and the nodes can be daisy chained up to four levels deep which can allow data to be transmitted from distances over a mile away Lastly these SapIP systems are both versatile and flexible allowing them to be applied for several different purposes Each unit is configurable for a customer s specific applications and records surface temperat...

Page 5: ... IRT Instruction Manual 1 23 2017 Page 4 Dynamax Inc Figure 1 IRT temperature monitor over a large field reporting to a network of Zigbee Routers Figure 2 IRT on a Pivot Arm Reporting to a Central Controller ...

Page 6: ...SapIP IRT Instruction Manual 1 23 2017 Page 5 Dynamax Inc ...

Page 7: ...SapIP IRT Instruction Manual 1 23 2017 Page 6 Dynamax Inc ...

Page 8: ...es for 95 sensitivity i e at 20 degrees 95 of the temp signal is included in view 3 1 View Dist Width 2 Data 2 1 Purpose The purpose of the SapIP IRT s data collection is to provide the user with real time data measurements Typically the sensor will take 2 seconds to read the temp and then the results are either averaged or saved according to the collection steps Each set of data can be displayed ...

Page 9: ... may need a significant development tool to program it to accept a setting we have chosen for the Digi Device In our Zigbee Format We have chosen the Digi International since the tools and supporting coordinator hardware is complete and fully supported with Windows software tools Settings for the groups of agricultural networks that are close together requiring Pan and in some cases channel assign...

Page 10: ...ion a three character checksum comes before the CRLF 3 Radio Mesh Wireless Network to Controller and Network to Cloud Option 3 1 Purpose The purpose of the Zigbee protocol is to have a method of connecting the data results from nodes to a coordinator The coordinator then concentrates all the data for the industrial controller or PC to analyze the data Users or the central controller make irrigatio...

Page 11: ...P ACC24 EW 4 1 2 Range 300 500 ft 100 150 meters 7 dbi antenna omnidirectional with spark gap protection and grounding Part no is SPIP ACC24 and is an exposed antenna 4 1 3 Range 150 feet 50 meters 1 to 1 5 dBi antenna omnidirectional low gain rubber duck style Sealed water proof rubber duck are supplied by Dynamax Most Wi Fi antennas are not water proof Part no is SPIP IRTANT24 4 1 4 Range over 5...

Page 12: ...r DC from either 5 V or 12 V supply to the IRT Logger typically switches on IRT for 2 seconds takes a reading then stores the results After the logger will power down the IRT Minimum 5 V input this is considered typical operation Current 6 mA average maximum 25 mA during readings Maximum 12 18 V voltage or switched supply at 12 V battery nominal Current 3 mA average maximum 12 mA 7 Power SPIP IRT ...

Page 13: ... Mounting Kit come with the materials necessary for proper installation Each accessory needed during the installation process is included 1 1 Dynamax SapIP IRT Fixed Dynamax SapIP IRT Each device ordered comes with the 2 EPS conduit hanger shown below to fasten the unit to the mounting kit Included are x 1 1 2 Hex Head Bolt SS nut and washer 5 16 x 3 Hex head Bolt Galv Nut and Washer Zip ties cust...

Page 14: ...e unit 1 2 2 Assembling the Mounting Kit The first objective is to correctly attach the 4 ft vertical pipe to the mounting plate To begin one will need to determine where he or she wishes to place the mounting plate Next press the plate at the pre determined location and locate the U shaped bolts and their associated screws illustrated in red 1 below The plate should fit securely within the vertic...

Page 15: ... the plate Make sure each U bolts evenly fasten the pipe in place The final mounting kit should look somewhat identical to figure 5 illustrated below 1 2 3 Mounting the SapIP IRT The first objective towards correctly fastening the SapIP IRT to the adjustable mounting kit is to locate a place on the pipe where one wishes to mount the IRT If not done so already one will need to drill a hole through ...

Page 16: ...in antenna and it should be waterproof and should be powered on 100 of the time If AC power is applied thru a converter get rid of that and use a 120 V charger and a battery with 4 Ahr supply at 12 V to make sure it is always on 1 3 2 Then power up the Routers The Routers should have high gain antenna and antenna should be waterproof and should be powered on 100 of the time If AC power is applied ...

Page 17: ... this pole where it will take its measurements Each accessory that is needed during the installation process can be found below 2 1 1 Dynamax SapIP IRT Dynamax SapIP IRT 2 EPS conduit hanger shown below which will be needed in order to fasten the unit to the mount pole x 1 1 2 Hex Head Bolt SS Hex Nut SS USS Flat Washer SS 5 16 x 3 Hex head Bolt Galv 5 16 Hex nut Galv 5 16 Flat Washer Zip ties opt...

Page 18: ...one has room to clamp the antenna s hanger 2 1 4 Fence Post The next part of this assembly a barbed wire fence post is provided by the customer Prepare the fence post by drilling a hole through the pipe vertically using a 5 16 8mm drill bit Be certain that the fence post is secure within the ground and provides a means that will allow it to fasten to the vertical cross arm 2 2 Installation Install...

Page 19: ... mentioned set of IRT materials and slide a washer on it Grab the 2 EPS conduit hanger and place it with the opening facing downward The top of the hanger has a place one can slide the bolt through Place it through the sensor cross arm or the vertical pole Screw in a hex head nut on top of a washer Place the IRT through the hanger and insert the x 1 1 2 bolt to close the hanger which will grasp th...

Page 20: ...thin figure 3 This item should be screwed on the golden apparatus on the far end of the IRT After turning closed your fingers then screw it in place tightening with a small crescent wrench 1 8 of a turn This will properly seal the silicon inside the water seal of the connector Next 4 and 6 will bolt together through the hanger hole on 1 One will need to find the washer which fits around 6 This wil...

Page 21: ...cess can be found below 3 1 1 Dynamax SapIP IRT SapIP IRT 2 EPS conduit hanger shown below which will be needed in order to be fastened the unit to the mounting kit x 1 1 2 Hex head Bolt SS Hex Nut SS USS Flat Washer SS 5 16 x 3 Hex head Bolt Galv 5 16 Hex nut Galv 5 16 Flat Washer Zip ties optional o Can be used to fasten any loose cables to vertical pole 3 1 2 Chicken Wire Fence Post A fence pos...

Page 22: ...ert through the chicken wire fence post horizontally Screw in a hex head nut on top of a washer An example of the fastened 2 EPS hanger can be found below Place the IRT through the hanger clamp and screw the x 1 bolt which will grasp the IRT This will keep it firmly in place throughout the duration it is in the field An illustration of the last bolt that will need to be fastened is shown below as ...

Page 23: ... below the SapIP IRT We recommend that silicone glue is squeezed into the jacket between the red black wires 10 14 2017 ECN Note If one has zip ties wrapping them at various locations around the sensor cross arm will prevent any cable or wire slack while in the field Locate the golden male connection end at the top of the SapIP IRT and screw on the antenna Apply some silicone grease to the male th...

Page 24: ...cavity and secure with a putty to prevent ants from invading your power switch housing o Note LEDs will blink if the unit is turned on illustrated by the red arrow below o The upper side next to the antenna is the Radio power LED It initially blinks four times when in contact with the coordinator After normal operation the transmit LED will blink briefly only once each minute When transmitting the...

Page 25: ... or 12VDC battery Power BLACK G Signal WHITE 1H Signal GREEN 1L Shield CLEAR Shield Drain Note using switched 12V power has to be on for at least 2 seconds before reading sensors 4 3 Wiring the SAPIP_IRT_SDI version For the serial SDI version there is no battery so the on off switch is not used The power and communications signals are in the cable bundle and must all be hooked to a suitable SDI ca...

Page 26: ...e specs Charging is discontinued momentarily during the noise sensitive measurement cycle 2 seconds 1 2 Check Battery Voltage Battery voltage is checked to see if it is in the acceptable range If the battery is below 3 8 V a very slow LED blink will begin The LED will be on for 10 milliseconds and off for 10 seconds and the charger will continue to function if it can The IRT unit is frozen in this...

Page 27: ...blink 150 ms every 10 seconds Next a data packet is constructed which contains the header information see appendix frame number node ID battery voltage object temperature sensor ambient temperature and the checksum Each item is separated by a comma i e 1 17 5 1 32 70 24 80 cr Frame Number A single digit which starts at 0 and increments during every output sample up to 9 restarting at 0 This number...

Page 28: ...s an Analog DC ADC telemetry signal will be updated The conversion formula from the voltage output is T Vo 0 01 40 0 T is in degrees C Voltage Range 0 1 6 V An EEPROM switch determines whether the ADC telemetry signal is used If is not set the DAC is left asleep The unit either does radio transmit and ADC or just one output Whichever combination is set by the two EEPROM variables DAC_OUTPUT and RA...

Page 29: ...r at least 12 milliseconds None sensor wakes up Acknowledge Active a a CR LF Send Identification aI allccccccccmmmmmmvvvxxx xx CR LF Change Address aAb b CR LF Address Query a CR LF Start Measurement aM atttn CR LF Ex 2M Start Measurement with CRC aMC atttn CR LF Example 2MC Send Data aD0 a values CR LF or a values CRC CR LF Example 0D0 Response 0 39321 12 1 024 40 024 00 ...

Page 30: ...s to program yyyy address in EEPROM SS is data variable length Extended command X Read EEPROM aXXsyyyy S bytes to read yyyy address in EEPROM Response is immediate and is aXXzz where zz is requested data Low Power marking for 100msec or invalid address none low power isn t supported CPU must run continuously since break isn t an interrupt aMx aC aCC aCx aCCx aRx aRCx NOT SUPPORTED ...

Page 31: ...arging will be resumed The whole process takes 2 seconds The FFT filters in the sensor will stabilize the measurements See SDI 12_Specification_1 3_January_3_2012 section 4 4 5 8 3 Aborting Measurements is NOT Supported CPU is fully engaged in the measurement and cannot sense a break command during the 2 second cycle See SDI 12_Specification_1 3_January_3_2012 section 4 4 5 1 8 4 Service Request a...

Page 32: ... T 13 45 30 03 0M R 13 45 30 13 00034 R 13 45 32 03 0 T 13 45 32 04 0D0 R 13 45 32 34 0 39321 1 2 024 50 024 00 T 13 46 00 03 0M R 13 46 00 13 00034 R 13 46 02 03 0 T 13 46 02 04 0D0 R 13 46 02 34 0 39321 12 024 66 024 00 T 13 46 30 03 0M R 13 46 30 13 00034 R 13 46 32 03 0 T 13 46 32 04 0D0 R 13 46 32 34 0 39321 1 2 024 64 023 98 T 13 47 00 03 0M R 13 47 00 13 00034 R 13 47 02 03 0 T 13 47 02 04 ...

Page 33: ... location which can be a byte word or long word Its input parameters are size and address o Note The first 4 bytes are the serial number which cannot be programmed The command mode switch and the radio output mode also might be non programmable or forbidden as well this could potentially prevent the user from programming the unit into a black hole F Charge Command This command puts charger into To...

Page 34: ... 9 4 EEPROM Configuration Switches Configuration switches are programmed during factory assembly but can be re programmed with the aid of an AVR ISPmkII device Also most of these may be programmed remotely by the user with radio commands or serial commands for the SDI version define EEPROM_SERIAL_NUMBER 0 32bit serial number define EEPROM_SENSOR_ID 4 node ID coded as two ascii digits node id from ...

Page 35: ...default of one minute transmission period unless specified by the customer at the time of order To change the interval the customer technician must be familiar with the XCTU software from Digi and have a coordinator module connected to the PC which needs to have the XCTU software running Step One Verify XCTU software version is newer than 6 1 0 Step Two Connect Coordinator to PC USB port Click Add...

Page 36: ...2017 Page 35 Dynamax Inc Step Three Discover IRTs within the network using Discover radio nodes icon Once desired IRTs are discovered click Add Selected Device button to list the nodes under coordinator Record MAC addresses of all nodes ...

Page 37: ... 36 Dynamax Inc Step Four Navigate to Consoles Working Mode top right tab then click to close Serial Connection top middle Step Five Click Add New Frame icon to bring up API frame generator Then click blue Create Frame area in the pop up window ...

Page 38: ...Select o Protocol ZigBee Frame Type Transmit Request o Fill in Frame Parameters 64 Bit destination address MAC address of a particular node Broadcast radius 15 RF data in HEX 50 02 00 08 00 05 Last HEX value is the new interval in HEX format Defin 50 o Click OK to finish ...

Page 39: ...SapIP IRT Instruction Manual 1 23 2017 Page 38 Dynamax Inc Step Seven Create a Frame Name and then click Add frame button ...

Page 40: ... frame window click Send selected frame to exe cute o Frames log window shows Transmit Request and Transmit Status Then wait for new data o Note from the screen capture on the left it will take some times for IRT node to adjust to the new interval Step Nine Repeat Step 4 through 8 for additional IRT nodes ...

Page 41: ...mainder with direct to the coordinator 4 My computer does not have XCTU where can I download this ftp ftp dynamax com 5 What does Dynamax recommend for winter service Make sure the battery is charged then disconnect the battery to store the unit out of the field Each season the IRT sensor should be cleaned with a Q tip and wiped with a dab of alcohol A maintenance document is supplied with each Sa...

Page 42: ...onds after every 10 seconds The purpose of this is to conserve what remains of the battery s voltage in an extremely low battery drain state until the charger can bring the battery back Lastly brown out failures will reset the CPU These might occur under severe battery failures and immediately after the charger begins to heal the battery Brown out resets could occur multiple times but then after t...

Page 43: ...also requires an ack nack If four nacks in a row are received the packet is discarded and the next measurement cycle is started So if a record shows up at the coordinator with a record number of N then that means that a defective packet was nack ed and successfully retransmitted Be aware that the MAC layer of the Zigbee protocol also does ack nacks and retransmissions See the Zigbee documents for ...

Page 44: ...6 24 5 3 30 42 24 94 07 24 2014 09 24 32 7 24 5 3 30 29 24 89 07 24 2014 09 25 41 8 24 5 3 30 19 24 79 07 24 2014 09 26 49 9 24 5 3 30 22 24 73 07 24 2014 09 27 57 0 24 5 3 30 17 24 64 07 24 2014 09 29 06 1 24 5 2 30 11 24 61 07 24 2014 09 30 14 2 24 5 3 30 15 24 68 07 24 2014 09 31 22 3 24 5 3 30 33 24 66 07 24 2014 09 32 31 4 24 5 2 30 07 24 70 2 Zigbee Output Codes Format Zigbee Address Sequenc...

Page 45: ...rmed 13 A2 A2 0 0 40 40 A6 a6 82 82 E0 E0 47 16 bit address not real used CE 41 Receive status Acked end device 31 1 Sample number 2C 39 9 16 bit Sensor ID hex from EEPROM_SENSOR_ID 39 9 39 9 range 0 to 0xFFFF 39 9 2C 20 Battery voltage 35 5 range 0 20 9 volts Over range 99 99 2E 31 1 2C 20 Temperature Object 2B range 40 00 to 120 00 Over range 200 00 32 2 35 5 2E 31 1 36 6 2C 20 Temperature Ambie...

Page 46: ...er a reset has occurred 4 3 Battery Check Blink If the battery voltage is below 3 8 volts the processor stays in a battery charge loop until it rises above 4 2volts While in that loop the LED is on for 10 milliseconds every 10 seconds charge the battery 4 4 Measurement Loop Initialization LED turns on for 500 milliseconds while the IRT simultaneously wakes up Turns off for 1 5 seconds during the I...

Page 47: ...nterpret the radio blink codes o Note There may be reason to believe Zigbee documents are not 100 accurate 5 1 Normal When first powering up an IRT with a coordinator nearby waiting for association the LED is off for several seconds then several fast blinks will occur indicating association Next the normal blink sequence will start 9 short blinks separating the 10 one second sleep periods After th...

Page 48: ...ery ten seconds a short blink occurs That operational blink tells us we are working and ready for commands If not attached to a fixed supply a short blink occurs on power up 50 ms we are then ready for commands Upon receiving a SDI command every correct command results in a long blink An aM command will have a longer blink during the temperature measurement 2seconds The blink above is broken down ...

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