YSI IQ SensorNet MIQ/A-MOD Module User Manual
Contents
1. A Fig 3 6 Connection of the MIQ A MOD as a Modbus end device Fasten the cap nut of the screwed cable gland Check and if necessary correct the position of the Modbus terminator switch The switch must be in the ON position Perform the check Check whether the wires and cables are screwed on tightly Insulate open wires Remove any cable remains from the MIQ A MOD module 10 Close the MIQ A MOD module Note 1 Using shielding terminal connect the shield of the Modbus cable to the potential equalization or grounding system of the plant in the vicinity but outside of the MIQ module housing 76021 01 01 2012 13 Interface for the Modbus RTU MIQ A MOD B To loop the Modbus cable through the MIQ A MOD component a Connecting the shielding terminal is included in the scope of delivery MIQ A MOD component at the 7 Modbus with a loop through Fig 3 7 Shielding terminal with Modbus cable and shield connection cable 1 Screw 2 Washer 3 Insulating part of the shielding terminal Cable insulation of the Modbus cable Shielding braid of the Modbus cable Wires of the Modbus cable Shield connection wire 1 Carefully strip the cabl2. Y AnyBus S 7 7 Modbus RTU E eje I W 2 e F Fig 3 9 Looping the Modbus cable through an MIQ A MOD 76021 01 01 2012 15 Interface for the Modbus RTU MIQ A MOD 13 Fasten the cap nut of the screwed cable gland 14 Check and if necessary correct the position of the Modbus terminator switch The switch must be in the OFF position 15 Perform the check Check whether the wires and cables are screwed on tightly Insulate open wires Remove any cable remains from the MIQ A MOD module 16 Close the MIQ A MOD module Note Using a shielding terminal connect the shield of the Modbus cable to the potential equalization or grounding system of the plant in the vicinity but outside of the MIQ module housing 3 2 8 Setting changing the address baud rate and parity Note The address baud rate and parity cannot be changed dur
3. Modbus Information Data format Bit Data Bit Register type o N o N N o eo p o 2 8 o S H 0233 1 8 30 sensor number S30 int 8 7 0 0233 9 16 Sensor status Int 8 7 0 0234 1 16 Sensor model Int 16 15 0 0235 1 16 Status info Int 16 15 0 0236 1 8 Measuring mode Int 8 7 0 0236 9 16 Measured value status Int 8 7 0 1 16 Main measured value IEEE 754 floating point 32 bit Float 32 31 16 0238 1 16 Main measured value IEEE 754 floating point 32 bit Float 32 15 0 0239 1 16 Secondary meas value IEEE 754 floating point 32 bit Float32 31 16 0240 1 16 Secondary meas value IEEE 754 floating point 32 bit Float32 15 0 Note 1 The counting method of the Modbus registers and Modbus bits and the allocation of MSB and LSB is different from the usual method of most programming languages Modbus Usually Counting start of the register 1 0 allocation of the register Bit 1 Bit 15 allocation of the register Bit 16 Bit 0 MSB Most significant bit LSB Least significant bit 76021 01 01 2012 31 Data transmission MIQ A MOD Float 32 4 5 Data formats The sensor data in the sensor data block see section 4 4 are available in the Float 32 INT16 and INT8 data formats The data for the main and secondary measured values are transmitted in the IEE 754 standard 32 bit floating point format Bit
4. Do all devices have individual bus addresses Have the devices been restarted after changing the bus address baud rate or parity switched off and then on again Do the addresses projected in the master correspond to the actual addresses After commissioning Do all devices signal error free behavior 5 it guaranteed that the Modbus master has consistent access to the 16 byte sensor data structure ba76021e01 01 2012 21 Interface for the Modbus RTU MIQ A MOD 3 5 Sensor administration under Modbus Preparation of the IQ SENSOR NET for communication with the Modbus may require e g the following Creating an IQ SENSOR NET system with specific assignment of sensor numbers to sensors see section 3 5 1 Creating several IQ SENSOR NET systems with the identical assignment of sensor numbers to sensors see section 3 5 2 Changing the order of the sensors in an already installed system see section 3 5 3 3 5 1 Creating the assignment of sensor numbers You want to install an Q SENSOR NET system and at the same time to create a specific sequence of sensor number assignments to the sensors 1 Carry out a system start without any sensors see System operating manual chapter Installation 2 Connect the sensors to the system in the required order For each sensor wait until the sensor is recognized by the system see System operating manual chapter Installation 3 5 2 Creating the i
5. Return form may be downloaded at www ysi com and clicking on the Support tab 76021 01 01 2012 39 Contact Information MIQ A MOD 40 ba76021601 01 2012 a xylem brand 1725 Brannum Lane Yellow Springs Ohio 45387 USA 1 937 767 7241 800 765 4974 US FAX 937 767 1058 Email environmental ysi com Internet www ysi com
6. The data consists of two bytes The assignment is carried out in Motorola format big endian the higher value byte first Bit representation Information MSB LSB 110 LII Low byte All other data are transmitted in the INT8 format This data consists of one byte The data for the measured value status of the main and secondary measured values are encoded jointly into a single byte Bits 7 4 encode the status of the main measured value bits 3 0 encode the status of the secondary measured value 76021 01 01 2012 33 Data transmission MIQ A MOD 34 ba76021601 01 2012 MIQ A MOD What to do if Data transmission between the Modbus IQ SENSOR NET system is faulty The Modbus master does not receive any plausible input data master and 5 What to do if 5 1 Fault diagnosis A simple diagnosis of the operability of the Modbus module and communication with the Modbus is possible via the LEDs on the Modbus module in the MIQ MC A MOD see section 3 2 4 5 2 Error elimination Cause Remedy Incorrect wiring of the connections on the terminal strip Check change the connections on the terminal strip see section 3 2 1 ncorrect setting of address baud rate parity Check change the settings see section 3 2 3 ncorrect protocol Adapt the protocol Modbus module defective Cause Send MIQ MC A M
7. measured value status 20 23h CRC HI 21 5 CRC LO Checksum CRC 28 ba76021601 01 2012 MIQ A MOD Data transmission Sensor data block Query and response telegram Supported Modbus commands 4 3 Structure of the information The datasets of up to 30 sensors 20 IQ SENSOR NET sensors and 10 differential sensors of the IQ SENSOR NET are made available to the Modbus in a sensor data block in the controller of the IQ SENSOR NET Data transmission takes place via query and response telegrams The form of the telegrams is determined by the Modbus RTU protocol The Modbus master transmits a query telegram with a Modbus command to a Modbus slave The Modbus slave transmits a response telegram with the requested data from the sensor data block or an error message The IQ SENSOR NET provides the data block for read access only Writing Modbus commands are not carried out Modbus commands Command code Read Input Register 04h Read Discrete Inputs 02h Read Holding Register 03h Read Coils 01h ba76021601 01 2012 29 Data transmission MIQ A MOD 4 4 Sensor data block The data block contains the data of up to 30 sensors in the order of registering on the IQ SENSOR NET Sxx number The data of a sensor are stored in 8 registers each Thus the sensor data block consists of altogether 240 registers Each register contains 2 bytes
8. ba76021601 01 2012 25 Data transmission MIQ A MOD Determining the number of registers to be read Example Read all data of X sensors The number of registers to be read is maximum 240 Number of sensors Number of registers X 1 8 2 16 3 24 30 240 Example of a Query of all sensor information of the sensor with the sensor number Modbus query S02 and Modbus response Modbus query Byte Value Information Meaning of the value 1 01h Modbus address of 01h gt 1 the MIQ MC MOD 2 04h Function 04h gt 4 Read Input Register see section 4 3 3 00h Start address HI 0008h gt 8 Start with register 9 4 08h Start address LO Modbus counting method 5 00h Number of HI registers 0008h gt 8 ist 6 Number of LO nee registers 7 70h CRC HI Checksum CRC 8 OEh CRC LO 26 ba76021601 01 2012 MIQ A MOD Data transmission Response with all sensor information of the sensor with the sensor number S02 Modbus response Byte Value Information Meaning of the value 1 01h Modbus address ofthe O1h gt 1 MIQ MC MOD 2 04h Function 04h gt 4 Read Input Register 3 10h Number of bytes 10h gt 16 16 Byte 8 registers 4 02h Contents of register 9 02h Int 8 gt 2 HI Sensor number S02 sensor number 5 02h Contents of register 9 02h Int 8 gt MEASURE LO sensor s
9. documentation of the HMS INDUSTRIAL NETWORKS AB company Note Further information on the technical data of the Modbus module is given on the Internet under the address of the manufacturer HMS INDUSTRIAL NETWORKS AB www hms networks com in the following documents e FIELDBUS APPENDIX ANYBUS S Modbus RTU AnyBus Slave Design Guide ANYBUS S Parallel Interface 38 ba76021601 01 2012 MIQ A MOD Contact Information 7 Contact Information 7 4 Ordering amp Technical Support Telephone 800 897 4151 937 767 7241 Monday through Friday 8 00 AM to 5 00 PM ET Fax 937 767 1058 Email environmental Q ysi com Mail YSI Incorporated 1725 Brannum Lane Yellow Springs OH 45387 USA Internet www ysi com When placing an order please have the following information available YSI account number if available Name and Phone Number Model number or brief description Billing and shipping address Quantity Purchase Order or Credit Card 7 2 Service Information YSI has authorized service centers throughout the United States and Internationally For the nearest service center information please visit www ysi com and click Support or contact YSI Technical Support directly at 800 897 4151 When returning a product for service include the Product Return form with cleaning certification The form must be completely filled out for an YSI Service Center to accept the instrument for service The Product
10. time the line is used to supply all modules with electrical voltage from a power supply unit The power supply unit is only required for power supply and is not used in the system communication With the MOD option the MIQ A MOD module upgrades the system communication by a Modbus interface Via this interface sensor data can be queried with the Modbus RTU protocol The Modbus interface RS 485 also enables a direct point to point connection from an IQ SENSOR NET system to a Modbus master e g PC or PLC Modbus master Modbus RTU RS 485 Terminal Mod au odbus module i controller Power supply IQ SENSOR NET for sensor cleaning Interface PC Software terminal Fig 1 2 Functional units of the IQ SENSOR NET with connection to the Modbus Note All other general information on components functions and operation of the IQ SENSOR NET system 2020 XT USB is given in the system operating manual With the A option the MIQ A MOD module extends the IQ SENSOR NET system by a fully automatic air pressure compensation for D O sensors see system operating manual ba76021601 01 2012 MIQ A MOD Safety instructions Directions A 2 Safety instructions This component operating manual contains special instructions that must be followed during the installation of the Modbus module Thus it is essential to read this component operating manu
11. 1 01 2012 MIQ A MOD Data transmission Determining the first register to be read 4 Data transmission 4 1 Overview Data transmission is carried out via the RS 485 interface with the Modbus RTU protocol The following sensor data is transmitted Sensor number Sxx Sensor status Sensor model Status info of sensors Measuring mode Measured value status main and secondary measured value Main measured value Secondary measured value Note The transmitted data of all IQ SENSOR NET sensors is given in the YSI document IQ SENSOR NET sensors encoded data for field bus communication ba76073e It is permanently updated when new sensors are available and when the sensor software is modified if the modifications are relevant for the transmitted sensor data The latest version is available on the Internet in the download area for operating manuals Use the search function for the download and search for ba76073e 4 2 Modbus query With each query of sensor data via the Modbus protocol a block of consecutive registers is read up to all of the 240 registers For a query of sensor data determine the first register and the number of registers to be read 1 240 The first register to be read depends on the sensor number Sxx 1 30 and the number of the sensor register R 1 8 Sxx 1 Example Determine the first register with data for the sensor S10 10 1 8 1 2 73
12. 3 5 Note 1 The sensor numbers are automatically assigned by the IQ SENSOR NET in the order in which sensors are recognized by the system The current assignment of sensor numbers to the sensors can be seen in the List of sensors see System operating manual chapter List of sensors 20 ba76021601 01 2012 MIQ A MOD Interface for the Modbus RTU 3 4 Modbus checklist The following checklist supports you when planning projecting and installing a Modbus plant with the IQ SENSOR NET For smooth operation you should be able to answer all questions with Yes 5 the bus system bus segment installed without branch lines Was the correct Modbus cable used cord type A according to EN 50170 Are the poles of the signal lines A line and B line correctly connected at all bus connections 15 it guaranteed that there is no short circuit between A line B line and cable shielding 5 the shielding installed free of interruptions Are the guidelines for shielding and grounding being observed and doesn t any unallowed potential equalization current flow via the shielding 5 the maximum cable length per bus segment observed for the corresponding baud rate Do all devices support the required baud rate Are exactly two terminators switched on at the ends of the bus system bus segment Are the terminators supplied with voltage so the following applies Up line 7 UA line gt 500 mV
13. OD module to YSI Remedy The data interpretation is not correct Observe data formats of the MIQ MC A MOD see also section 4 5 ba76021601 01 2012 35 What to do MIQ A MOD 36 ba76021601 01 2012 MIQ A MOD Technical data 6 Technical data Electrical data Instrument safety Terminal connections 6 1 IQ SENSOR NET Component MIQ A MOD General technical data for the IQ SENSOR NET are given in the system operating manual for the 2020 XT USB system Nominal voltage Max 24 VDC via the IQ SENSOR NET for details see chapter TECHNICAL DATA of the IQ SENSOR NET system operating manual Power consumption 3W Protective class Number of MIQ A MOD modules in an IQ SENSOR NET system Applicable norms IQ SENSOR NET connections 1 EN 61010 1 UL3111 1 CAN CSA C22 2 No 1010 1 2 2 additional SENSORNET terminators that can be activated terminating resistors Terminal type Screw type terminal strip accessible by opening the lid Terminal ranges Solid wires 0 2 4 0 mm AWG 24A 12 Flexible wires 0 2 2 5 mm Cable feeds 4 cable glands M16 x 1 5 on the underside of the module ba76021601 01 2012 37 Technical data MIQ A MOD 6 2 Modbus module Information on the technical data of the AnyBus S Modbus RTU module from the HMS INDUSTRIAL NETWORKS AB company is given in the
14. The bytes 0 and 1 form register 0001 the bytes 2 and 3 form register 0002 etc Modbus Information Data format Bit Data Bit Register type 0001 1 8 1 sensor number S01 Int 8 7 0 0001 9 16 Sensor status Int 8 7 0 0002 1 16 Sensor model Int 16 15 0 _ 0003 1 16 Status info Int 16 15 0 D 0004 1 8 Measuring mode Int 8 7 0 z 0004 9 16 Measured value status Int 8 7 0 0005 1 16 Main measured value IEEE 754 floating point 32 bit Float 32 31 16 0006 1 16 Main measured value IEEE 754 floating point 32 bit Float 32 15 0 0007 1 16 Secondary meas value IEEE 754 floating point 32 bit Float32 31 16 0008 1 16 Secondary meas value IEEE 754 floating point 32 bit Float32 15 0 0009 1 8 2 sensor number 502 Int 8 7 0 0009 9 16 Sensor status Int 8 7 0 0010 1 16 Sensor model Int 16 15 0 X 0011 1 16 Status info Int 16 15 0 D 0012 1 8 Measuring mode Int 8 7 0 0012 9 16 Measured value status Int 8 7 0 9 0013 1 16 Main measured value IEEE 754 floating point 32 bit Float 32 31 16 0014 1 16 Main measured value IEEE 754 floating point 32 bit Float 32 15 0 0015 1 16 Secondary meas value IEEE 754 floating point 32 bit Float32 31 16 0016 1 16 Secondary meas value IEEE 754 floating point 32 bit Float32 15 0 30 ba76021e01 01 2012 MIQ A MOD Data transmission
15. WE KNOW O a xylem brand Operating Manual IQ SENSOR NET MIQ A MOD lt Modbus RTU RS 485 Further Terminal Modbus module Further Modbus controller Modbus devices devices IQ SENSOR NET Modbus RTU and RS 485 connection for the IQ SENSOR NET system2020 XT USB 76021 01 01 2012 MIQ A MOD i Contact Copyright Note For the most recent version of the manual please visit www ysi com YSI 1725 Brannum Lane Yellow Springs OH 45387 USA Tel 1 937 767 7241 800 765 4974 Email environmental Q ysi com Internet www ysi com 2012 Xylem Inc ba76021601 01 2012 MIQ A MOD Contents Modbus RTU und RS 485 connection for the IQ SENSOR NET system 2020 XT USB 1 OVERVIEW G4 E EIPBIE EYE 5 1 1 How to use this component operating manual 5 1 2 Modbus and IQ SENSOR NET system 2020 XT USB 6 2 7 2 3 7 2 2 General safety 5 5 8 Interface for the Modbus RTU 9 3 1 Scope of delivery 9 3 2 The Modbus module 9 3 2 1 Terminal connections 11 3 2 2 Connecting the Modbus cable 12 3 2 8 Setting changing the a
16. al before carrying out any work using this sensor In addition to this manual the SAFETY chapter of the IQ SENSOR NET system operating manual must be followed Always keep this component operating manual together with the system operating manual and all other component operating manuals in the vicinity of the IQ SENSOR NET system The following symbols indicate special features in the individual chapters of this operating manual Note indicates notes that draw your attention to special features Note indicates cross references to other documents e g operating manuals 2 1 Authorized use Authorized use of the MIQ A MOD consists of its use as an interface to a Modbus The technical specifications according to chapter 5 WHAT TO DO IF must be observed Only operation according to the instructions in this operating manual is authorized Any other use is considered to be unauthorized Unauthorized use invalidates any claims with regard to the guarantee ba76021601 01 2012 Safety instructions MIQ A MOD Function and operational safety Safe operation 2 2 General safety instructions The MIQ A MOD is constructed and inspected in accordance with the relevant guidelines and norms for electronic instruments see chapter 5 WHAT TO DO IF It left the factory in a safe and secure technical condition The failure free function and operational safety of the MIQ A MOD is only guaranteed if the generall
17. ddress baud rate and parity 16 3 2 4 Bus and module monitoring 18 3 3 51 0 20 3 4 Modbus checklist 21 3 5 Sensor administration under Modbus 22 3 5 1 Creating the assignment of sensor numbers 22 3 5 2 Creating the identical assignment of sensor numbers in several systems 22 3 5 8 Changing the assignment of sensor numbers 23 4 Data transmission 25 4 1 Overview ee ee 25 4 2 Modbus query 25 4 3 Structure of the information 29 4 4 Sensor data block 30 4 5 Data formalis 24 wk eid leue MA xh 32 5 What todo if osos Rea ROSEO xoa 35 5 1 55 35 5 2 35 6 Technical data 2 1 6212 9 9 Hee eee v 37 6 1 IQ SENSOR NET Component MIQ A MOD 37 6 2 Modbus module 38 Contact Information 39 ba76021601 01 2012 Contents MIQ A MOD 7 1 Ordering amp Technical Support 39 7 2 Service 39 4 ba76021601 01 2012 MIQ A MOD Overview Structure of the IQ SENSOR NET operating manual 1 Overvie
18. dentical assignment of sensor numbers in several systems You want to install several identical IQ SENSOR NET systems and at the same time to create the same sequence of sensor number assignments to the sensors in all systems 1 Carry out a system start without any sensors see System operating manual chapter Installation 2 Connect the sensors to the system in the required order For each sensor wait until the sensor is recognized by the system see System operating manual chapter Installation 3 Repeat steps 1 and 2 for all other systems and while doing so keep to exactly the same order when connecting the sensors 22 ba76021601 01 2012 MIQ A MOD Interface for the Modbus RTU 3 5 3 Changing the assignment of sensor numbers You want to change the assignment of sensor numbers to the sensors in an already running IQ SENSOR NET system 1 Unplug all sensors from the IQ SENSOR NET Note When the inactive datasets are deleted all settings for the sensors are deleted as well 2 Delete all inactive datasets in the list of sensors see System operating manual chapter Deleting inactive datasets of sensors 3 Connect the sensors to the system in the required order For each sensor wait until the sensor is recognized by the system see System operating manual chapter Installation ba76021601 01 2012 23 Interface for the Modbus RTU MIQ A MOD 24 ba7602160
19. e insulation of both Modbus cables for approx 35 mm 2 Shorten the exposed shielding braid to approx 15 mm 3 Bare the Modbus wires for approx 5 mm 4 Feed both cables through the free cable glands into the module housing of the MIQ A MOD 5 Create a shield connection wire 7 To do so strip a wire on both ends for approx 5 mm and 10 mm 6 Insert a washer in the insulating part 3 of the shielding terminal 7 Feed both Modbus cables into the insulating part 3 and lead them through the insulating part 14 ba76021e01 01 2012 MIQ A MOD Interface for the Modbus RTU 8 Feed the long stripped end of the shield connection wire 7 into the insulating part 3 of the shielding terminal 9 Position the second washer and screw it tight approx approx approx 15 mm 15mm 5mm lt lt gt x 4 321 7 Fig 3 8 Shielding terminal with Modbus cable view from above 10 Shorten the wires of the shielding braid if they protrude over the shielding terminal 11 Put the Modbus wires together in pairs 12 Connect the Modbus wires and shield to the terminal connections of the Modbus module connections ALine BLine and Shield see section 3 2 1
20. he MIQ MC A MOD The AnyBus S Modbus is an interface that can be used to query sensor data with the Modbus RTU protocol Fig 3 2 Elements of the AnyBus S Modbus RTU 1 Modbus RTU terminal strip 2 Modbus terminator switch 3 Dip switches to set the address baud rate and parity see section 3 2 3 4 LEDs for Modbus diagnosis 5 LED for module diagnosis 10 ba76021601 01 2012 MIQ A MOD Interface for the Modbus RTU 3 2 1 Terminal connections Fig 3 3 Terminal connections Pin Name Function 1 z 2 E 3 A line Negative RxD TxD according to RS 485 specification 4 B line Positive RxD TxD according to RS 485 specification 5 6 Shield BUS cable screen connected with PE 76021 01 01 2012 11 Interface for the Modbus RTU MIQ A MOD 3 2 2 Connecting the Modbus cable The MIQ A MOD component can be connected at the Modbus end A or with a loop through B An RS 485 point to point connection has to be installed as a component at the end of the Modbus A A B A instrument connected at the Modbus e g MIQ A MOD Modbus cable Fig 3 4 Connection options of the MIQ A MOD at the Modbus cable A at the end or B with loop through Note 1 All cables with electrical characteristics according to EN 50170 suitable as a Modbus cable e g all Profibus cables A 1 Carefully strip the Modb ble insula
21. ing operation Any changes become effective only after a system reset see system operating manual The settings are made at the DIP switches of the Modbus module Fig 3 10 Dip switches 1 Dip switches to set the address S1 Dip 1 7 2 Dip switches to set the baud rate S1 Dip 8 and S2 Dip 1 2 3 Dip switches to set the parity S2 Dip 3 4 16 ba76021601 01 2012 MIQ A MOD Interface for the Modbus RTU Address A prerequisite for the configuration of the AnyBus S Modbus RTU Modbus module is the setting of its address The setting of the address is carried out with the dip switches 1 7 1 Each switch sets the value 0 or 1 for one digit of the seven digit binary number This enables addresses of 0 127 to be set Examples Address Setting on S1 dip switches 1 7 invalid 0000000 1 0000001 30 0011110 127 1111111 Baud rate A prerequisite for the configuration of the AnyBus S Modbus RTU Modbus module is the setting of the baud rate The setting of the baud rate is carried out with the dip switches 8 1 2 2 Each switch sets the value 0 or 1 for one digit of the three digit binary number This makes seven valid settings possible Baud rate Setting on S1 dip switch 8 and S2 dip switches 1 2 invalid 000 1200 001 2400 010 4800 011 9600 100 19200 101 38400 110 57600 111 Parity A prerequisite for the configuration of the AnyBus S Modbus RTU Modb
22. n Color Flash frequency ASIC and FLASH ROM error Red 2Hz Module not initialized Green 2Hz Module initialized and in operation Green 1Hz RAM error Red 1Hz DPRAM error Red 4 Hz 76021 01 01 2012 19 Interface for the Modbus RTU MIQ A MOD 3 3 Commissioning To connect the IQ SENSOR NET to the Modbus preparations are required on the Modbus module on the Modbus master and possibly on the IQ SENSOR NET as well Preparing the Modbus module 1 Open the MIQ A MOD module see system operating manual 2 Setthe address with the 7 dip switches at the Modbus module S1 dip switches 1 7 see section 3 2 3 3 Setthe baud rate with the 3 dip switches at the Modbus module S1 dip switch 8 and S2 dip switches 1 2 see section 3 2 3 4 Setthe parity using the two dip switches on the Modbus module S2 dip switches 3 4 see section 3 2 3 5 Connect the cable to the Modbus with the terminals of the Modbus module see section 3 2 1 6 Check and if necessary correct the position of the Modbus terminator switch see section 3 2 2 Configuring the Modbus 7 Configure the Modbus master for the new component see master Modbus documentation Preparing the Preparations on the IQ SENSOR NET may be necessary if the system IQ SENSOR NET should transmit the data of the sensors to the Modbus with a specific assignment of the sensors to sensor numbers S01 S20 see section
23. representation Byte Bit MSB LSB 4 31 24 S sign bita1 E Exponent Bit 30 23 3 23 16 M mantissa bits 22 0 2 15 08 1 07 00 MSB Most significant bit LSB Least significant bit If not all of the bits of the exponent are O the value is calculated according to y 2 p 2777 0 M 4 2 M4 2 M 27 t Maj 27 If all of the bits of the exponent are O the value is calculated according to y 2 V 2775 M 4 2 M27 My 2 Mi 2 A value is O if all the bits of both the exponent as well as the mantissa are 0 Note If the measured value is equal to 0 check the measured value status If the measured value status is not equal to 1 an error has occurred and the measured value is invalid Note The Modbus protocol does not define how the bytes of 32 Bit IEEE 754 floating point numbers should be ordered Apart from the byte order described in the bit representation another order of the bytes is also possible Opposite to the order described the two lower bytes have been exchanged with the two upper bytes in this order b4 b3 b2 b1 b2 b1 b4 b3 32 ba76021601 01 2012 MIQ A MOD Data transmission INT16 INT8 For Modbus applications that can independently interpret floating point numbers or allow to select a data format for certain registers the byte order the data interpretation is based on should be checked In the INT16 format the data for the sensor model and status info is transmitted
24. stallation tips that apply to Modbus systems as well 3 1 Scope of delivery The scope of delivery of the MIQ A MOD module comprises MIQ MOD or MIQ A MOD Modbus module AnyBus S Modbus HTU mounted in the MIQ A MOD module 4 x screwed cable glands with seals and blind plugs 2 x ISO blind nuts M4 2 x cheese head screws M4x16 with plastic washer 1 x contact base 2 x plastic tapping screws for fixing the contact base Screw for shielding terminal 2 x washer for shielding terminal Insulating part of the shielding terminal Operating manual 3 2 TheModbus module The Modbus module AnyBus S Modbus RTU is mounted on the main PCB of the MIQ A MOD module ba76021601 01 2012 Interface for the Modbus RTU MIQ A MOD zy AnyBus S d Modbus RTU ro om S de MIC 2 Fig 3 1 AnyBus S Modbus t
25. tatus 6 04h Contents of register 10 HI 0401h Int 16 sensor model gt VisoTurb 700 IQ 7 01h Contents of register 10 LO sensor model 8 00h Contents of register 1 1 HI 0000h Int 16 status info gt no errors 9 00h Contents of register 1 1 LO status info 10 00h Contents of register 12 00 Int 8 gt FNU Tr b HI measuring mode 11 14h Contents of register 12 14h Int 8 LO Main measured value bits measured value 7 4 status 1h gt VALID Secondary measured value bits 3 0 4h gt MISSING ba76021e01 01 2012 27 Data transmission MIQ A MOD Byte Value Modbus response Information Meaning of the value 12 42h Contents of register 13 HI main measured value 13 9Eh Contents of register 13 LO main measured value 14 46h Contents of register 14 HI main measured value 15 C2h Contents of register 14 LO main measured value 429E46C2h Float 32 gt 79 1382 Measured parameter and unit see byte 10 measuring mode 16 00h Contents of register 15 HI secondary measured value 17 00h Contents of register 15 LO secondary measured value 18 00h Contents of register 16 HI secondary measured value 19 00h Contents of register 16 LO secondary measured value 00000000h Float 32 gt 0 but measured value invalid MISSING see Byte 11
26. tion for approx 20 mm Connecting the arefully strip the Modbus cable insu pprox MIQ A MOD 2 Bare the Modbus wires from the shielding braid and strip them component for approx 5 mm at the Modbus end 3 Twist the shielding braid and cover it with approx 15 mm insulating tube 4 Insert the Modbus cable into the module housing of the MIQ MC A MOD through the screwed cable gland 5 Additionally insulate the transition between cable sheath and insulating tube of the shielding braid e g with insulating tape or shrinkable tubing so that no shielding braid is uncovered Insulating tape Modbus wires Shield NEU L1 L2 Fig 3 5 Modbus cable with insulating tape L1 approx 15 mm L2 approx 5 mm 12 ba76021e01 01 2012 MIQ A MOD Interface for the Modbus RTU Connect the Modbus wires and shield to the terminal connections of the Modbus module connections ALine BLine and Shield see section 3 2 1 AnyBus S Modbus RTU e tere 15
27. us module is the setting of the parity The setting of the parity is carried out with the parity dip switches 3 4 3 Each switch sets the value or 1 for one digit of the two digit binary number This makes three valid settings possible Parity Setting on S2 dip switches 3 4 invalid 00 None 2 stop bits 01 Even 1 stop bit 10 Odd 1 stop bit 11 ba76021e01 01 2012 17 Interface for the Modbus RTU MIQ A MOD 3 2 4 Bus and module monitoring The Modbus module has 4 LEDs for monitoring the bus and one LED for monitoring the Modbus module These 5 LEDs are important aids for the monitoring and diagnosis of faults Bus monitoring The LEDs have the following meaning Fig 3 11 LEDs for bus monitoring LED Color Meaning 1 Flashes Data exchange green the module receives or transmits data Off No data exchange 2 Red Bus error more than 10 of the received telegrams have wrong CRC values Off The module is operating or not initialized 3 Green Modbus is ready for operation Off The module is not correctly initialized 4 Red The dip switches are set to invalid values all dip switches are set to Off or to invalid values Off The dip switches are set to valid values 18 ba76021601 01 2012 MIQ A MOD Interface for the Modbus RTU Module monitoring A two color LED for position of the LED see section 3 2 is used for monitoring the Modbus module Monitoring functio
28. w 1 1 Howto use this component operating manual The present operating manual complements the system operating manual for the IQ SENSOR NET system 2020 XT USB Is contains the description of the MIQ A MOD module File this operating manual directly behind the system operating manual IQ Sensor Net Operating Manual System Operating Manual Ring Binder IQ Sensor MIQ Module MIQ Terminal Operating Operating Operating Manual Manual Manual Component Operating Manuals Fig 1 1 Structure of the IQ SENSOR NET operating manual The IQ SENSOR NET operating manual has a modular structure like the IQ SENSOR NET system itself It consists of the system operating manual and the operating manuals of all the components used The space in the ring binder behind the system operating manual is intended for filing the component operating manuals Please file all component operating manuals here so that all information is quickly available in one location 76021 01 01 2012 Overview MIQ A MOD System communication 1 2 Modbus and IQ SENSOR NET system 2020 XT USB The functional units of the IQ SENSOR NET are connected with one another via a common line Fig 1 2 The line consists of two wires and a shield It transports digital intormation between the controller and the other modules At the same
29. y applicable safety measures and the special safety instructions in this operating manual are followed during its use The failure free function and operational safety of the MIQ A MOD is only guaranteed under the environmental conditions that are specified in chapter 5 WHAT TO DO IF If safe operation is no longer possible the MIQ A MOD must be taken out of operation and secured against inadvertent operation Safe operation is no longer possible if the MIQ A MOD has been damaged in transport has been stored under adverse conditions for a lengthy period of time is visibly damaged no longer operates as described in this manual If you are in any doubt contact the supplier of your MIQ A MOD ba76021601 01 2012 MIQ A MOD Interface for the Modbus RTU 3 Interface for the Modbus RTU The MIQ A MOD Modbus module enables to connect the IQ SENSOR NET system 2020 XT USB with all the sensors connected to it to the digital connection of a superordinate process control In the MIQ A MOD the AnyBus S Modbus RTU Modbus module of the HMS INDUSTRIAL NETWORKS AB company is mounted for this Note Further instructions for the installation and operation of a Modbus network are given on the Internet under www Modbus org Especially recommendable is the Aufbaurichtlinie PROFIBUS FMS installation guideline issued by the PNO PROFIBUS user organization PNO order number 2 111 with many practical in
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