FX2N-4DA SPECIAL FUNCTION BLOCK USER'S GUIDE
Contents
1. 0 5 and 21 1 CH1 2 CH2 3 CH3 4 CH4 marked E will be written to A m EEPROM therefore the set values 4 Data holding mode Factory setting H0000 will be retained even after turning 6 7 off the power 1 BFM 0 Output mode select The value of BFM 0 switches the analog output between voltage and current on each channel It takes the form of a 4 digit hexadecimal number The first digit will be the command for channel 1 CH1 and the second digit for channel 2 CH2 etc The numeric values of these four digits respectively represent the following items H O O O O O 0 Sets the voltage output mode 10 V to 10 V b O 1 Sets the current output mode 4 mA to 20 mA CH4 CH3 CH2 CH1 O 2 Sets the current output mode 0 mA to 20 mA Switching the output mode resets the I O characteristics to the factory default characteristics Refer to the performance specifications described in section 4 Example H2110 CH1 Voltage output 10 V to 10 V CH2 and CH3 Current output 4 mA to 20 mA CH4 Current output 0 mA to 20 mA 2 BFM 1 2 3 and 4 Output data channels CH1 CH2 CH3 and CH4 BFM 1 Output data of CH1 Initial value 0 BFM 2 Output data of CH2 Initial value 0 BFM 3 Output data of CH3 Initial value 0 BFM 4 Output data of CH4 Initial value 0 3 BFM 5 Data holding mode While the programmable controller is in the STOP mode the last output value in the RUN mode will2. s system Standard characteristics Standard characteristics of Standard characteristics of of voltage output current output 4mA to 20mA current output OmA to 20mA 10 235V 2 047 0 1 000 0 1 000 gt Digital input gt Digital input Gain value Analog output value when the digital input is 1 000 A Offset value Analog output value when the digital input is 0 Offset and gain can be set independently or together Reasonable offset ranges are 5V to 5V or 20mA to 20mA and gainvalue offset value 1V to 15V or 4mA to 32mA Gain and offset can be adjusted from software in the main unit When the slope of the I O characteristic line is steep Slight changes to the digital input will greatly increase or reduce the analog output When the slope of the I O characteristic line is gentle Slight changes to the digital input will not always change the analog output Note that the resolution minimum possible change of analog output of the FX2N 4DA is fixed 9 2 Adjustment of I O Characteristics An example program for adjustment is shown below The example shows that for channel CH2 of FX2n 4DA block No 1 the offset value is changed to 7 mA and the gain value to 20 mA Note that for CH1 CH3 and CH4 the standard voltage output characteristics are set Su Pek ne OPERATION START 20mA oe TOR Ki Ko Hooo K
3. Manual At various times throughout this manual certain symbols will be used to highlight points of information which are intended to ensure the users personal safety and protect the integrity of equipment 1 Indicates that the identified danger WILL cause physical and property damage damage A 2 Indicates that the identified danger could POSSIBLY cause physical and property Under no circumstances will Mitsubishi Electric be liable or responsible for any consequential damage that may arise as a result of the installation or use of this equipment All examples and diagrams shown in this manual are intended only as an aid to understanding the text not to guarantee operation Mitsubishi Electric will accept no responsibility for the actual use of the product based on these illustrative examples e Owing to the very great variety in possible application for this equipment you must satisfy yourself as to its suitability for your specific application 1 INTRODUCTION e The FX2N 4DA analog special function block has four analog output channels The output channels take a digital value and output an equivalent analog signal This is known as a D A conversion The FX2N 4DA has a maximum resolution of 12 bits e The selection of voltage or current based input output is by user wiring Analog ranges of 10 to 10V DC resolution 5mV and or O to 20mA resolution 20uA maybe selected independently for each channel e The FX2N 4DA can conn
4. be held To reset the value to the offset value write the hexadecimal value in BFM 5 as follows H O O O O O 0 Holds the output CH4 CH3 CH2 CHT O 1 Resets to the offset value Example H0011 CH1 and CH2 Offset value CH3 and CH4 Output holding In addition to the above functions the buffer memories can adjust the I O characteristics of the FX2N 4DA and report the status of the FX2N 4DA to the PLC V Po Descrip B 0 a intial offset value 0 14 Initial gain value 5 000 E i 19 20 21 E TO characteristics asmen ARH iaae aa Reseved OOS O K3020 identification code Buffer memories marked W can be written to using the TO instruction in the main unit The status of BFM 0 5 and 21 marked E will be written to EEPROM therefore the set values will be retained even after turning off the power 1 Offset data Actual analog output value when corresponding output data BFM 1 through 4 is O 2 Gain data Actual analog output value when corresponding output data BFM 1 through 4 is 1 000 e mk N SS CO u di NO na 3 When current output mode 1 4 mA to 20 mA is set the offset data will be automatically set to 4 000 and the gain data to 20 000 When the current output mode 2 0 mA to 20 mA is set the offset data will be automatically set to O and the gain data to 20 000 BFM 8 and 9 Offset gain setting command Changes offset and gain values o
5. from DO BFM 1 D1 BFM 2 D2 BFM 3 and D3 BFM 4 to the respective output channels of the FX2N 4DA When the PLC is in STOP the analog values set before stopping the PLC will remain output The output will be held When the PLC is in STOP the offset values can also be output For a detailed description refer to Section 6 3 CAUTION REGARDING OPERATION Check whether the output wiring and or expansion cables are properly connected on the FX2N 4DA analog special function block Check that the PLC system configuration rules have not been broken i e the number of blocks and the total system I O are within the specified range Ensure that the correct output mode has been selected for the application Check that there is no power overload on either the 5V or 24V power source remember the loading on the main unit or a powered extension unit varies according to the number of extension blocks or special function blocks connected Put the main processing unit into RUN After turning ON or OFF the 24V DC power for analog signals the analog output may fluctuate for approximately 1 second This is due to time delays in the power supply from the main unit or differences in start time For this reason be sure to take preventive measures so that this output fluctuation will not affect the external units Example of preventive measure Power switch Analog data cut OFF circuit 9 FXon 4DA special 1 External func
6. value is changed to 7 mA and the gain value to 20 mA Note that for CH1 CH3 and CH4 the standard voltage output characteristics are set a SET mo OPERATION START 20mA M p E i TA K KO H0010 K1 H0010 BFM 0 Sets the Analog mode of the output channel output TOBY Ki ket Ko oK K1 gt BFM a1 j L J Permits adjustment of I O 7mA characteristics K30 0 1 000 To 7 gt Digital input TOR Ki K12 K7ooo Ki K7000 gt BFM 12 Sets the offset data Offset value 7 mA TOR Ki K113 K20000 K H K20000 gt BFM 13 L A Sets the gain data Gain value 20 mA TOR K K H1100 K1 H H1100 gt BFM 8 4 CH2 offset gain setting command a1 K30 T1 7 M RST Mo U OPERATION END TO Ko Ka K2 Ki K2 RBFM 21 J Inhibits adjustment of I O characteristics If the FX2N 4DA does not operate properly check the following items 1 Check the external wiring Refer to section 4 of this manual 2 Check status of the POWER indicator lamp LED of the FX2N 4DA On The extension cable is properly connected Off or flash Check connection of extension cable Also check the 5 V power supply capacity 3 Check status of the 24 V power indicator lamp LED of the FX2N 4DA On 24 VDC is supplied Off Supply 24 VDC 10 to the FX2N 4DA 4 Check the status of the D A conversion indicator lamp LED of the FX2N 4DA Flash D A convers
7. voltage output terminal or connecting 2 Apply 1 point grounding at the load side the current output load to the voltage output of the output cable grounding 100 or terminal may damage the FX2n 4DA less 6 The 24V DC service power of the PLC can also be 3 If electrical noise or a voltage ripple used exists at the output connect a smoothing 7 Do not connect any unit to the unused terminal capacitor of 0 1 to 0 47uF 25V 5 SPECIFICATIONS 5 1 General specifications pecification Same as those for the main unit 500V AC 1min between all terminals and ground General specifications Dielectric withstand voltage 5 2 Performance specification entigrade Fahren 10V DC to 10V DC External load DC OmA to 20mA External load resistance 2kQ to 1MQ resistance 500Q 16 bits binary with sign Effective bits for numeric value 11 bits and sign bit 1 bit 5mV 10V x 1 2000 20uA 20mA x 1 1000 1 at full scale of 10V 1 at full scale of 20mA 2 1ms for 4 channels Change in the number of channels used will not change the conversion speed Photo coupler isolation between analog and digital circuits DC DC converter isolation of power from main unit No isolation between analog channels xternal power supply 24V DC 10 200mA Analog output range 16 bits binary with sign Digital input Effective bits for numeric value 10 bits Resolution otal accuracy Conversion spe
8. 0 24inches 6 2mm A IS 3 CONNECTION WITH PLC The FX2n 4DA unit can be connected to the PLCs as follows Restrictions apply to the maximum number of connectable units depending on the DC24V DC5V Power Supply capacities and the Main Unit Special Function Unit types For details refer to the respective PLC manual FX2N FX3U The maximum connectable units is 8 FX3uc The maximum connectable units is 8 To connect the FX2N 4AD with the FX3uc main unit FX2Nc CNV IF or FX3uc 1PS 5V is required FX2NC The maximum connectable units is 4 To connect the FX2N 4DA with the FX2Nc main unit FX2NC CNV IF is required FX1N The maximum connectable units is 8 FXON The maximum connectable units is 4 1 Up to 7 units can be connected to an FX3uc 32MT LT PLC 4 WIRING The terminal layout shown below may differ from the actual layout For the correct terminal layout refer to section 2 External Dimensions and Parts DC DC converter D grounding en he DO fc eee 1009 or less DC24V 10 200mA 9 3 Inverter etc gt gt Mixed output from the same channel is not possible 5 Extension cable Recorder etc 1 Use a twisted pair shielded cable for the 4 Connect the terminal on the FX2N 4DA with analog output This cable should be l wired away from power lines or any other the terminal on the main unit of the PLC lines which could induce noise 5 Shorting the
9. Changes for the Better a MITSUBISHI PROGRAMMABLE CONTROLLERS MELSEGF FX2N 4DA SPECIAL FUNCTION BLOCK USER S GUIDE JY992D65901D This manual contains text diagrams and explanations which will guide the reader in the correct installation and operation of the FX2N 4DA special function block and should be read and understood before attempting to install or use the unit Further information can be found in the FX PROGRAMMING MANUAL II and FXon FX1N F X2N F X2NC FX3u FX3uc SERIES HARDWARE MANUAL Guidelines for the Safety of the User and Protection of the FX2N 4DA special function block This manual should be used by trained and competent personnel The definition of such a person or persons is as follows a Any engineer using the product associated with this manual should be of a competent nature trained and qualified to the local and national standards These engineers should be fully aware of all aspects of safety with regards to automated equipment b Any commissioning or service engineer must be of a competent nature trained and qualified to the local and national standards c All operators of the completed equipment should be trained to use this product in a safe and coordinated manner in compliance to established safety practices Note The term completed equipment refers to a third party constructed device which contains or uses the product associated with this manual Notes on the Symbols Used in this
10. I H0010 gt BFM 0 Sets the Analog J mode of the output channel output to Ki ka K K U K1 gt BFM 21 j L J Permits adjustment of I O 7mA characteristics K30 0 1 000 To 7 gt Digital input TOM Ki K12 K7000 K H K7000 gt BFM 12 Sets the offset data Offset value 7 mA TORY Ki K143 K20000 K1 H K20000 gt BFM 13 L 4 Sets the gain data Gain value 20 mA TOR K Ks H1100 K1 H H1100 gt BFM 8 J CH2 offset gain setting command CH Ti 7 B RST Mo U OPERATION END TOR Ko Ka K2 Ki K2 RBFM 21 4 Inhibits adjustment of I O characteristics If the FX2N 4DA does not operate properly check the following items 1 Check the external wiring Refer to section 4 of this manual 2 Check status of the POWER indicator lamp LED of the FX2N 4DA On The extension cable is properly connected Off or flash Check connection of extension cable Also check the 5 V power supply capacity 3 Check status of the 24 V power indicator lamp LED of the FX2N 4DA On 24 VDC is supplied Off Supply 24 VDC 10 to the FX2N 4DA 4 Check the status of the D A conversion indicator lamp LED of the FX2N 4DA Flash D A conversion is normal On or off The ambient conditions are not suitable for the FX2N 4DA or the FX2N 4DA is defective 5 Check that the external load resistance connected to each analog output terminal does not exceed the capacity of the FX2N 4DA drive voltage output 2kQ to 1 MQ cur
11. Output holding In addition to the above functions the buffer memories can adjust the I O characteristics of the FX2N 4DA and report the status of the FX2N 4DA to the PLC Initial offset value 0 Initial gain value 5 000 17 Gaindata CH42 Gaindata CH4 W aa characarists ajusmnent HRBT oa vas K3020 identification code Buffer memories marked W can be written to using the TO instruction in the main unit The status of BFM 0 5 and 21 marked E will be written to EEPROM therefore the set values will be retained even after turning off the power 1 Offset data Actual analog output value when corresponding output data BFM 1 through 4 is O 2 Gain data Actual analog output value when corresponding output data BFM 1 through 4 is 1 000 8 When current output mode 1 4 mA to 20 mA is set the offset data will be automatically set to 4 000 and the gain data to 20 000 When the current output mode 2 0 mA to 20 mA is set the offset data will be automatically set to O and the gain data to 20 000 BFM 8 and 9 Offset gain setting command Changes offset and gain values of channels CH1 through CH4 by writing 1 to the corresponding Hex digits of BFM 8 or 9 The current values will be valid until this command is output O 0 No changes done BFM 8 BFM 9 O 1 Change data value H O O O O H O O O C Program example see section 8 G2 02 G1 01 G4 04 G3 03 BFM 10 through to 17 Of
12. abnormal Offset Gain data normal or a data setting error occurs Power supply error 24V DC power failure Power supplied normally Defective D A converter or other hardware Non detective hardware b10 Range error The digital input or analog output value is The input or output value is in the out of the specified range specified range G O Adjustment ahh Adjustable status prohibit status eno BEM 21 1 Bits b4 through to b9 b11 b13 through to b15 are not defined 4 BFM 80 The identification code for a special function block is read using the FROM instruction The identification code for the FX2N 4DA unit is K3020 The main unit can use this facility in the program to identify the special block before commencing any data transfers from and to the special function block Note BFM s marked E fa Values of BFM 0 5 and 21 marked E are stored in the EEPROM memory of the FX2N 4DA BFM 10 to 17 are copied to EEPROM when the gain offset setting command BFM 8 9 is used Also BFM 20 causes the resetting of the EEPROM memory The EEPROM has a life of about 10 000 cycles changes so do not use programs which frequently change these BFMs A mode change of BFM 0 automatically involves a change of the corresponding offset and gain values Because of the time needed to write the new values to the internal EEPROM memory a delay of 3 s is required between instructions changing BFM 0 and instructions writing to the corre
13. ange specified range G O Adjustment aa Adjustable status prohibit status BEMA i le DOLGE IO I BFM 21 1 Bits b4 through to b9 b11 b13 through to b15 are not defined 4 BFM 30 The identification code for a special function block is read using the FROM instruction The identification code for the FX2N 4DA unit is K3020 The main unit can use this facility in the program to identify the special block before commencing any data transfers from and to the special function block Note BFM s marked E Values of BFM 0 5 and 21 marked E are stored in the EEPROM memory of the FX2n 4DA BFM 10 to 17 are copied to EEPROM when the gain offset setting command BFM 8 9 is used Also BFM 20 causes the resetting of the EEPROM memory The EEPROM has a life of about 10 000 cycles changes so do not use programs which frequently change these BFMs e A mode change of BFM 0 automatically involves a change of the corresponding offset and gain values Because of the time needed to write the new values to the internal EEPROM memory a delay of 3 s is required between instructions changing BFM 0 and instructions writing to the corresponding BFM 10 through BFM 17 Therefore a delay timer should be used before writing to BFM 10 through 17 7 OPERATION AND PROGRAM EXAMPLES If the factory default I O characteristics are not changed and the status information is not used you can operate the FX2N 4DA using the following simple pr
14. ected to the FXon FX1 N FX2N FX2NC FX3Uu FX3uc series Programmable Controllers PLC e Data transfer between the FX2N 4DA and the main unit is completed buffer memory exchange There are 32 buffer memories each of 16 bits in the FX2N 4DA e The FX2nN 4DA occupies 8 I O points on the FX2N expansion bus The 8 I O points can be allocated from either inputs or outputs The FX2N 4DA draws 30mA from the 5V rail of the main unit or powered extension unit 2 EXTERNAL DIMENSIONS AND PARTS Dimensions mm inches 55 2 17 55 2 17 A HHR l H ws POWER 2 I LHO FXax 4DA 24V 9 DIA 0 gt e e Weight Approx 0 3 kg 0 66 Ibs e Accessory Special block number label Extension cable 24V power indicator lamp LED 24V DC power is supplied to the terminals of the Power indicator lamp LED FX2N 4DA to light this indicator lamp 5 V power is supplied from the programmable controller to light this D A conversion indicator lamp LED indicator lamp Flashes at a high speed if D A conversion Power supply terminals is performing without a problem Screw terminal M3 0 12 Hook for DIN rail Analog output terminals Groove for DIN rail mounting Screw terminals M3 0 12 Width of DIN rail 35 mm 1 38 Hole for direct mounting 2 04 5 0 18 Handling of crimp style terminal We Be sure to u
15. ed Isolation Number of occupied The analog block occupies 8 I O points I O points can be either inputs or outputs ower consumption 5V 30mA Internal power supply from MPU or powered extension unit Mode O votage At load resistance MoCe 1 Current At load resistance a of 10kQ ane of 2500 10V 20mA 20mA 10 235V 10V Analog output aban f 4mA 2 000 i 0 1 000 gt Digital input gt Digital input 10V Mode 2 Current output OmA to 20mA 20mA Command sent from the programmable controller can change the mode The ere voltage current output mode selected output will determine the output terminals f used 0 1 000 gt Digital input I O characteristics Default mode 0 Follow the procedure described in section 8 to change At load resistance of 250Q 6 ALLOCATION OF BUFFER MEMORIES BFM Data is transmitted between the FX2N 4DA and the main unit via buffer memories 16 bit 32 point RAM Output mode select Factory setting H0000 1 W Buffer memories marked W can be written to using the TO instruction in the main unit The status of BFM 0 5 and 21 marked E will be written to EEPROM therefore the set values will be retained even after turning off the power Output data Signed 16 bits binary actual value 11 bits sign 1 CH1 2 CH2 3 CH3 4 CH4 4 Data holding mode Factory setting H0000 6 7 1 BFM 0 Outpu
16. f channels CH1 through CH4 by writing 1 to the corresponding Hex digits of BFM 8 or 9 The current values will be valid until this command is output O 0 No changes done BFM 8 BFM 9 O 1 Change data value H O O O O H O O O C Program example see section 8 G2 02 G1 01 G4 04 G3 03 BFM 10 through to 17 Offset gain data The offset and gain values are changed by writing new data to BFM 10 through to 17 The units of the data to be written is mV or uA The data should be written and then BFM 8 and 9 set Note that the data value will be rounded down to the nearest 5mV or 20mA 1 BFM 20 Initialize When K1 is written in BFM 20 all values will be initialized to the factory default Note that the BFM 20 data will override the BFM 21 data This initialize function is convenient if you have an error in adjustment 2 BFM 21 I O characteristics adjustment inhibit Setting BFM 21 to 2 inhibits the user from inadvertent adjustment of I O characteristics The adjustment inhibit function once set will be valid until the Permit command BFM 21 1 is set The initial value is 1 Permit The set value will be retained even after power OFF 3 BFM 29 Error status When an error occurs use the FROM command to read out the details of the error atus when bit is set to atus when bit is set to 0 turned on turned off p0_ Error Error it any of bT through b4 is turned on b1 O G error Offset gain data in EEPROM is
17. fset gain data The offset and gain values are changed by writing new data to BFM 10 through to 17 The units of the data to be written is mV or uA The data should be written and then BFM 8 and 9 set Note that the data value will be rounded down to the nearest 5mV or 20mA 1 BFM 20 Initialize When K1 is written in BFM 20 all values will be initialized to the factory default Note that the BFM 20 data will override the BFM 21 data This initialize function is convenient if you have an error in adjustment 2 BFM 21 I O characteristics adjustment inhibit Setting BFM 21 to 2 inhibits the user from inadvertent adjustment of I O characteristics The adjustment inhibit function once set will be valid until the Permit command BFM 21 1 is set The initial value is 1 Permit The set value will be retained even after power OFF 3 BFM 29 Error status When an error occurs use the FROM command to read out the details of the atus when bit is set to error atus when bit is set to 0 turned on turned off pO Eror Error any of bi through b4 is turned on b1 O G error Offset gain data in EEPROM is abnormal Offset Gain data normal or a data setting error occurs Power supply error 24V DC power failure Power supplied normally Defective D A converter or other hardware Non detective hardware The digital input or analog output value is The input or output value is in the b10 Range error oe ifs out of the specified r
18. ical and property damage damage A 2 Indicates that the identified danger could POSSIBLY cause physical and property Under no circumstances will Mitsubishi Electric be liable or responsible for any consequential damage that may arise as a result of the installation or use of this equipment All examples and diagrams shown in this manual are intended only as an aid to understanding the text not to guarantee operation Mitsubishi Electric will accept no responsibility for the actual use of the product based on these illustrative examples e Owing to the very great variety in possible application for this equipment you must satisfy yourself as to its suitability for your specific application 1 INTRODUCTION e The FX2N 4DA analog special function block has four analog output channels The output channels take a digital value and output an equivalent analog signal This is known as a D A conversion The FX2N 4DA has a maximum resolution of 12 bits e The selection of voltage or current based input output is by user wiring Analog ranges of 10 to 10V DC resolution 5mV and or O to 20mA resolution 20UA maybe selected independently for each channel e The FX2N 4DA can connected to the FXoN FX1N FX2N FX2NC FX3U FX3uUc series Programmable Controllers PLC e Data transfer between the FX2N 4DA and the main unit is completed buffer memory exchange There are 32 buffer memories each of 16 bits in the FX2N 4DA e The FX2nN 4DA occu
19. ion is normal On or off The ambient conditions are not suitable for the FX2N 4DA or the FX2N 4DA is defective 5 Check that the external load resistance connected to each analog output terminal does not exceed the capacity of the FX2N 4DA drive voltage output 2kQ to 1 MQ current output 5009 6 Check the output voltage or current value using a voltmeter or ammeter and confirm that the output meets the I O characteristics If the output does not meet the I O characteristics adjust the offset and gain again Refer to section 9 Note To test the withstand voltage of the FX2nN 4DA connect all the terminals to the grounding terminal This manual confers no industrial property rights or any rights of any other kind nor does it confer any patent licenses Mitsubishi Electric Corporation cannot be held responsible for any problems involving industrial property rights which may occur as a result of using the contents noted in this manual Manual number JY992D65901 Manual revision D Date September 2007 a MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE TOKYO BUILDING 2 7 3 MARUNOUCHI CHIYODA KU TOKYO 100 8310 JAPAN HIMEJI WORKS 840 CHIYODA CHO HIMEJI JAPAN Changes for the Better a MITSUBISHI PROGRAMMABLE CONTROLLERS MELSEGF FX2N 4DA SPECIAL FUNCTION BLOCK USER S GUIDE JY992D65901D This manual contains text diagrams and explanations which will guide the reader in the correct installation and
20. ogram For the FROM and TO instructions refer to the FX Programming Manual II CH1 and CH2 Voltage output mode 10 V to 10 V CH3 Current output mode 4 mA to 20 mA CH4 Current output mode 0 mA to 20 mA M8002 x TO K1 KO H2100 Ki initial pulse H2100 BFM 0 CH1 and CH2 Voltage output CH3 Current output 4mA to 20 mA CH4 Current output 0 mA to 20 mA Write the data for CH1 to DO CH2 to D1 L CH3 to D2 and CH4 to D3 ai Write data in respective data registers while observing the following ranges Data register DO and D1 2 000 to 2 000 Data registers D2 and D3 0 to 1 000 Rakha TO K1 K1 DO k4 Data register DO BFM 1 output to CH1 RUN amp 4 Data register D1 gt BFM 2 output to CH2 monitor Data register D2 BFM 8 output to CH3 Data register D3 BFM 4 output to CH4 Operation procedure 1 Turn OFF the power of the PLC and then connect the FX2N 4DA After that wire the I O lines of the FX2N 4DA 2 Set the PLC to STOP and turn on the power Write the above program then switch the PLC to RUN 3 Analog values will be sent from DO BFM 1 D1 BFM 2 D2 BFM 3 and D3 BFM 4 to the respective output channels of the FX2N 4DA When the PLC is in STOP the analog values set before stopping the PLC will remain output The output will be held 4 When the PLC is in STOP the offset values can also be output Fo
21. operation of the FX2N 4DA special function block and should be read and understood before attempting to install or use the unit Further information can be found in the FX PROGRAMMING MANUAL II and FXon FX1N F X2N F X2NC FX3u FX3uc SERIES HARDWARE MANUAL Guidelines for the Safety of the User and Protection of the FX2N 4DA special function block This manual should be used by trained and competent personnel The definition of such a person or persons is as follows a Any engineer using the product associated with this manual should be of a competent nature trained and qualified to the local and national standards These engineers should be fully aware of all aspects of safety with regards to automated equipment b Any commissioning or service engineer must be of a competent nature trained and qualified to the local and national standards c All operators of the completed equipment should be trained to use this product in a safe and coordinated manner in compliance to established safety practices Note The term completed equipment refers to a third party constructed device which contains or uses the product associated with this manual Notes on the Symbols Used in this Manual At various times throughout this manual certain symbols will be used to highlight points of information which are intended to ensure the users personal safety and protect the integrity of equipment 1 Indicates that the identified danger WILL cause phys
22. pies 8 I O points on the FX2N expansion bus The 8 I O points can be allocated from either inputs or outputs The FX2N 4DA draws 30mA from the 5V rail of the main unit or powered extension unit 2 EXTERNAL DIMENSIONS AND PARTS Dimensions mm inches 87 3 43 55 2 17 55 2 17 4 0 16 2 3 K 1 N T j l 2 SEE 0 ga j oj 2 S FXan 4DA M D D A 4 0 16 _ 7 z 3 e Weight Approx 0 3 kg 0 66 Ibs e Accessory Special block number label Extension cable 24V power indicator lamp LED 24V DC power is supplied to the terminals of the FX2N 4DA to light this indicator lamp D A conversion indicator lamp LED Flashes at a high speed if D A conversion is performing without a problem Hook for DIN rail Groove for DIN rail mounting Width of DIN rail 35 mm 1 38 Hole for direct mounting 2 04 5 0 18 Power indicator lamp LED 5 V power is supplied from the programmable controller to light this indicator lamp Power supply terminals Screw terminal M3 0 12 Analog output terminals Screw terminals M3 0 12 Handling of crimp style terminal We Be sure to use the crimp style terminals that satisfy the dimensional requirements shown in the left figure E FOR M3 0 12 Apply 0 5 to 0 8 N m torque to tighten the terminals Firmly tighten the terminals to prevent abnormal operation
23. r a detailed description refer to Section 6 3 8 CAUTION REGARDING OPERATION 1 Check whether the output wiring and or expansion cables are properly connected on the FX2N 4DA analog special function block 2 Check that the PLC system configuration rules have not been broken i e the number of blocks and the total system I O are within the specified range 3 Ensure that the correct output mode has been selected for the application 4 Check that there is no power overload on either the 5V or 24V power source remember the loading on the main unit or a powered extension unit varies according to the number of extension blocks or special function blocks connected 5 Put the main processing unit into RUN 6 After turning ON or OFF the 24V DC power for analog signals the analog output may fluctuate for approximately 1 second This is due to time delays in the power supply from the main unit or differences in start time For this reason be sure to take preventive measures so that this output fluctuation will not affect the external units Example of preventive measure Power switch Analog data cut OFF circuit FXon 4DA special 1 External function block y analog unit 9 ADJUSTMENT OF the I O CHARACTERISTICS 9 1 I O characteristics The standard characteristics factory default are shown by the solid lines in the figure below These characteristics can be adjusted according to the conditions of the user
24. rent output 5009 6 Check the output voltage or current value using a voltmeter or ammeter and confirm that the output meets the I O characteristics If the output does not meet the I O characteristics adjust the offset and gain again Refer to section 9 Note To test the withstand voltage of the FX2N 4DA connect all the terminals to the grounding terminal This manual confers no industrial property rights or any rights of any other kind nor does it confer any patent licenses Mitsubishi Electric Corporation cannot be held responsible for any problems involving industrial property rights which may occur as a result of using the contents noted in this manual Manual number JY992D65901 Manual revision D Date September 2007 a MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE TOKYO BUILDING 2 7 3 MARUNOUCHI CHIYODA KU TOKYO 100 8310 JAPAN HIMEJI WORKS 840 CHIYODA CHO HIMEJI JAPAN
25. s Isolation DC DC converter isolation of power from main unit No isolation between analog channels xternal power supply 24V DC 10 200mA 16 bits binary with sign Effective bits for numeric value 10 bits Conversion speed Number of occupied The analog block occupies 8 I O points I O points can be either inputs or outputs ower consumption 5V 30mA Internal power supply from MPU or powered extension unit Mode 0 votage at load resistance MOCe 1 Current At load resistance a of 10kQ pur of 2500 10V 20mA 20mA 10 235V 10V Analog output an 4mA 2 000 I O characteristics 0 1 000 Default mode 0 Higisiinput gt Digital input Follow the procedure Mode 2 Current described in section 8 l output OmA to to change 20MA 20MA Command sent from the programmable controller can change the mode The Anala voltage current output mode selected output will determine the output terminals f ugen 0 1 000 gt Digital input At load resistance of 250Q 6 ALLOCATION OF BUFFER MEMORIES BFM Data is transmitted between the FX2N 4DA and the main unit via buffer memories 16 bit 32 point RAM BFM Buffer memories marked W can Ao _Descripton _ Output mode select Factory setting H0000 be written to using the TO 1 W ce instruction in the main unit Output data Signed 16 bits binary actual value 11 bits sign The status of BFM
26. se the crimp style terminals that satisfy the dimensional requirements shown in the left figure POR MAOTA Apply 0 5 to 0 8 N m torque to tighten the terminals Firmly tighten the terminals to prevent abnormal operation 6 2mm r amp 8 N o n 7 2 e IS 3 CONNECTION WITH PLC The FX2N 4DA unit can be connected to the PLCs as follows Restrictions apply to the maximum number of connectable units depending on the DC24V DC5V Power Supply capacities and the Main Unit Special Function Unit types For details refer to the respective PLC manual FX2N FX3U The maximum connectable units is 8 FX3uc The maximum connectable units is 8 To connect the FX2N 4AD with the FX3uc main unit FX2Nc CNV IF or FX3uc 1PS 5V is required FX2NC The maximum connectable units is 4 To connect the FX2N 4DA with the FX2Nc main unit FX2NC CNV IF is required FX1N The maximum connectable units is 8 FXON The maximum connectable units is 4 1 Up to 7 units can be connected to an FX3uc 32MT LT PLC 4 WIRING The terminal layout shown below may differ from the actual layout For the correct terminal layout refer to section 2 External Dimensions and Parts DC DC converter DC24V 10 200mA 9 3 Inverter etc gt gt Mixed output from the same channel is not possible 5 D grounding et CO eee 1009 or less Extension cable Recorder etc 1 Use a t
27. sponding BFM 10 through BFM 17 Therefore a delay timer should be used before writing to BFM 10 through 17 OPERATION AND PROGRAM EXAMPLES If the factory default I O characteristics are not changed and the status information is not used you can operate the FX2N 4DA using the following simple program For the FROM and TO instructions refer to the FX Programming Manual II CH1 and CH2 Voltage output mode 10 V to 10 V CH3 Current output mode 4 mA to 20 mA CH4 Current output mode 0 mA to 20 mA M8002 _ TO Ki KO H200 K H2100 gt BFM 0 CH1 and CH2 Voltage output CH3 Current output 4mA to 20 mA CH4 Current output 0 mA to 20 mA initial pulse Write the data for CH1 to DO CH2 to D1 Write data in respective data registers while observing the L CH3 to D2 and CH4 to D3 2 following ranges Data register DO and D1 2 000 to 2 000 Data registers D2 and D3 0 to 1 000 M8000 5 Data register DO BFM 1 output to CH1 _ TO K1 K1 DO K4 pr L Data register D1 gt BFM 2 output to CH2 monitor Data register D2 BFM 3 output to CH3 Data register D3 BFM 4 output to CH4 Operation procedure Turn OFF the power of the PLC and then connect the FX2N 4DA After that wire the I O lines of the FX2N 4DA Set the PLC to STOP and turn on the power Write the above program then switch the PLC to RUN Analog values will be sent
28. t mode select The value of BFM 0 switches the analog output between voltage and current on each channel It takes the form of a 4 digit hexadecimal number The first digit will be the command for channel 1 CH1 and the second digit for channel 2 CH2 etc The numeric values of these four digits respectively represent the following items H OOOO CH4 CH3 CH2 CH1 O 0 Sets the voltage output mode 10 V to 10 V O 1 Sets the current output mode 4 mA to 20 mA O 2 Sets the current output mode 0 mA to 20 mA Switching the output mode resets the I O characteristics to the factory default characteristics Refer to the performance specifications described in section 4 Example H2110 CH1 Voltage output 10 V to 10 V CH2 and CH3 Current output 4 mA to 20 mA CH4 Current output 0 mA to 20 mA 2 BFM 1 2 3 and 4 Output data channels CH1 CH2 CH3 and CH4 BFM 1 Output data of CH1 Initial value 0 BFM 2 Output data of CH2 Initial value 0 BFM 3 Output data of CH3 Initial value 0 BFM 4 Output data of CH4 Initial value 0 3 BFM 5 Data holding mode While the programmable controller is in the STOP mode the last output value in the RUN mode will be held To reset the value to the offset value write the hexadecimal value in BFM 5 as follows HOOOO CH4 CH3 CH2 CH1 O 0 Holds the output O 1 Resets to the offset value Example H0011 CH1 and CH2 Offset value CH3 and CH4
29. tion block analog unit ADJUSTMENT OF the I O CHARACTERISTICS 9 1 I O characteristics The standard characteristics factory default are shown by the solid lines in the figure below These characteristics can be adjusted according to the conditions of the user s system Standard characteristics Standard characteristics of Standard characteristics of of voltage output current output 4mA to 20mA current output OMA to 20mA 10 235V 2 047 0 1 000 0 1 000 gt Digital input gt Digital input Gain value Analog output value when the digital input is 1 000 A Offset value Analog output value when the digital input is O Offset and gain can be set independently or together Reasonable offset ranges are 5V to 5V or 20mMA to 20mA and gainvalue offset value 1V to 15V or 4mA to 32mA Gain and offset can be adjusted from software in the main unit When the slope of the I O characteristic line is steep Slight changes to the digital input will greatly increase or reduce the analog output When the slope of the I O characteristic line is gentle Slight changes to the digital input will not always change the analog output Note that the resolution minimum possible change of analog output of the FX2N 4DA is fixed 9 2 Adjustment of I O Characteristics An example program for adjustment is shown below The example shows that for channel CH2 of FX2n 4DA block No 1 the offset
30. wisted pair shielded cable for the 4 Connect the terminal on the FX2N 4DA with analog output This cable should be ali wired away from power lines or any other the terminal on the main unit of the PLC lines which could induce noise 5 Shorting the voltage output terminal or connecting 2 Apply 1 point grounding at the load side the current output load to the voltage output of the output cable grounding 1009 or terminal may damage the FX2n 4DA less 6 The 24V DC service power of the PLC can also be 3 If electrical noise or a voltage ripple used exists at the output connect a smoothing 7 Do not connect any unit to the unused terminal capacitor of 0 1 to 0 47uF 25V 5 SPECIFICATIONS 5 1 General specifications pecification General specifications Same as those for the main unit Dielectric withstand voltage 500V AC 1min between all terminals and ground 5 2 Performance specification entigrade Fahren 10V DC to 10V DC External load DC OmA to 20mA External load resistance 2kQ to 1MQ resistance 500Q 16 bits binary with sign Digital input Effective bits for numeric value 11 bits and sign bit 1 bit Resolution 5mV 10V x 1 2000 20uA 20mA x 1 1000 otal accuracy 1 at full scale of 10V 1 at full scale of 20mA 2 1ms for 4 channels Change in the number of channels used will not change the conversion speed Photo coupler isolation between analog and digital circuit
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