FX0N-3A SPECIAL FUNCTION BLOCK USER'S GUIDE
Contents
1. 4 2 Performance Specifications At shipment O to 250 range selected for O to 10V DC input When using an FXon 3A for current input or differing voltage inputs except 0 to 10V DC it is necessary to readjust the offset and gain The module does not allow different input characteristics for two channels 0 to 10V 0 to 5V DC resistance 200kQ Warning this unit may be damaged by input voltages in excess of 0 5V 15V Current input Analog input range 4 to 20mA resistance 2509 Warning this unit may be damaged by input currents in excess of 2mA 60mA Digital resolution 40mV 0 to 10V 0 to 250 At shipment Change depending on the input Change depending on the input characteristic characteristic TO instruction processing time x 2 FROM instruction processing time Smallest input sig 64uA 4 to 20mA 0 to 250 nal resolution Overall accuracy Processing time At shipment 255 N on oO oO Input characteristics DIGITAL VALUE 3 DIGITAL VALUE N DIGITAL VALUE 20 32 mA gt E i 0 040 10 ANALOG INPUT VOLTS o 0 020 5 0 4 064 ANALOG INPUT VOLTS ANALOG INPUT mA The module does not allow different input characteristics for two channels Current output At shipment O to 250 range selected for O to 10V DC output When using an FXon 3A for current output or differing voltage output except 0 to Analog output range 10V DG it is necessary to readjust the offset2. KO K17 H04 K1 TO KO K17 HOO K1 TO KO K17 HOO K1 7 3 2 Calibrating the Offset 1 Run the previously detailed program Ensure X00 is ON and X01 is OFF 2 Adjust the D A OFFSET potentiometer pot until the selected meter displays the appropriate offset voltage current in accordance with the analog operation range selected see table below Note Turn the pot clockwise and the analog output signal will increase The pot requires 18 revolutions to move between the minimum and maximum settings Analog output range 0 10V DC 0 5V DC 4 20mA DC Offset calibration meter value 0 040V 0 020V 4 064mA 7 3 3 Calibrating the Gain 1 Run the previously detailed program Ensure X00 is OFF and X01 is ON 2 Adjust the D A GAIN potentiometer pot until selected meter displays the appropriate gain voltage current in accordance with the analog operation range selected see table below Note 1 Turn the pot clockwise and the analog output signal will increase The pot requires 18 revolutions to move between the minimum and maximum settings Note 2 When it is necessary to maximize the 8 bit resolution the digital value used in the gain adjustment detailed above should be replaced with 255 This section has been written to demonstrate a 250 full scale calibration Analog output range 0 10V DC 0 5V DC 4 20mA DC
3. Gain calibration meter value 10 000V 5 000V 20 000mA 8 Program example 8 1 Using Analog Inputs The buffer memories BFM of the FXon 3A are written TO or read FROM by the host PLC The following program reads the analog input from channel 1 of the FXon 3A when MO is ON and the analog input data of channel 2 when M1 is ON Mo AE AAE HOO is written to BFM 17 selecting A D input channel 1 S H02 is written to BFM 17 starting the A D conversion process for TO KO K17 H02 K1 channel 1 PON O Ko Do eA BFM 0 is read storing the current value of channel 1 in register M1 DOO TO KO K17 HO1 KI H01 is written to BFM 17 now selecting A D input channel 2 TO Ko 1 Ki7 H03 Ki H03 is written to BFM 17 to re start the A D conversion process but for channel 2 FROM KO KO DO1 K1 BFM 0 is read storing the current value of channel 2 in register DO1 The time TAD required to read an analog input channel is calculated as follows TAD TO instruction processing time x 2 FROM instruction processing time Note The 3 TO FROM command format shown above should always be used when reading data from the FXon 3A s analog input channels 8 2 Using Analog Outputs The buffer memories BFM of the FXon 3A are written TO or read FROM by the host PLC In the following program when MO is turned ON the D A conversion pro
4. OFFSET P D A GAIN J x D D h O Voltage output Voltmeter Ammeter 7 3 1 Output Calibration Program X00 X01 X00 X01 m TO KO Ki6 K1 K1 4 TO KO K16 K250 K1 TO KO K17 H04 K1 TO KO K17 H04 K1 TO KO K17 HOO K1 TO KO K17 HOO K1 7 3 2 Calibrating the Offset 1 Run the previously detailed program Ensure X00 is ON and X01 is OFF 2 Adjust the D A OFFSET potentiometer pot until the selected meter displays the appropriate offset voltage current in accordance with the analog operation range selected see table below Note Turn the pot clockwise and the analog output signal will increase The pot requires 18 revolutions to move between the minimum and maximum settings Analog output range 0 10V DC 0 5V DC 4 20mA DC Offset calibration meter value 0 040V 0 020V 4 064mA 7 3 3 Calibrating the Gain 1 Run the previously detailed program Ensure X00 is OFF and X01 is ON 2 Adjust the D A GAIN potentiometer pot until selected meter displays the appropriate gain voltage current in accordance with the analog operation range selected see table below Note 1 Turn the pot clockwise and the analog output signal will increase The pot requires 18 revolutions to move between the minimum and maximum setting
5. Consumption current available for undermentioned special function blocks lt 300mA FX2Nc Up to 4 undermentioned special function blocks can be connected regardless of the system I O FXoN 1N Main unit and powered extension units Up to 2 undermentioned special function blocks can be connected regardless of the system I O FXon 3A 90mA Consumption current of 24V DC for one unit The consumption current of the above units is to be subtracted from the service power supply of the host PLC 2 FXoNn 3A consumes 5V DC by 30mA The total 5V consumption of all special function blocks connected to either the FX2N or FX2Nc main unit or an FX2N extension unit must not exceed the 5V voltage source capacity of the system 3 The FXon 3A and main unit are connected by a cable on the right of the main unit 4 Installation notes and Usage 4 1 General and Environmental Specifications General specifications ex withstand voltage Withstand Voltage 500V AC for 1 minute between ground and all other terminals Analog circuit power requirement 24V DC 10 90mA internal power supply from main unit Digital circuit power requirement 5V DC 30mA internal power supply from main unit Photo coupler isolation between analog and digital circuit No isolation between analog channels Specification Same as those for the main unit Isolation Number of occupied I O points 8 I O points from expansion bus either input or output
6. Voltage Current input input output output Analog value when digital value is 0 Oto 1V O to 4mA Analog value when digital value is 250 5 to 10V 5 to 10V Resolution changes depending on the set value when the input output characteristic is changed Example Resolution becomes 5 to OV 250 20mV at voltage input 0 to 5V 0 to 250 Overall accuracy does not change Voltage input 0 1V Current input 0 16mA 7 2 Method of Calibration A D Both analog input channels share the same setup and configuration Hence only one channel needs to be selected to perform the calibration for both analog input channels Use the following program and the appropriate wiring configuration to calibrate input channel 1 and indirectly channel 2 of the FXon 3A Vin2 lin2 com2 Fvint tint COM VIN2 lin2_ COM2 ViN1 IIN1 COM1 External External A D GAIN D A OFFSET current voltage input Vin2 lin2 coma vind lint COM4 LSS PIPIS W Integral Integral voltage current input 7 2 1 Input Calibration Program TO KO K17 HOO K1 TO KO K17 H02 K1 FROM KO KO DO K1 7 2 2 Calibrating the Offset 1 Run the previously detailed program Ensure X02 is ON 2 Generate an offset voltage current in accordance with the analog
7. and gain DC 0 to 10V 0 to 5V external load 1kQ to 1MO 4 to 20mA external load 500Q or less Digital resolution 8 bits 40mV 0 to 10V 0 to 250 At shipment 64uA 4 to 20mA 0 to 250 Change depending on the input Change depending on the input characteristic characteristic Smallest output signal resolution Overall accuracy Processing time TO instruction processing time x 3 At shipment 10 2 V Output characteristics o ANALOG OUTPUT ANALOG OUTPUT e DIGITAL VALUE DIGITAL VALUE DIGITAL VALUE If digital source data of greater than 8 bits is used only the lower 8 bits will be valid Additional upper bits will be ignored 5 Allocation of Buffer Memories BFM When FNC176 RD3A and FNC177 WR3A are used with FX1n FX2n V3 00 or more or FX2nc V3 00 or more the allocation of the buffer memory BFM need not be considered 0 Current value input data stored in 8 bits of the A D channel selected by bO of BFM 17 16 Reserved Current value output data on D A channel stored in 8 bits Reserved 17 Reserved D A A D A D start start channel e BFM 17 bO 0 analog input channel 1 is selected bO 1 analog input channel 2 is selected b1 0 1 the A D conversion process is started b2 1 gt 0 the D A conversion process is started e Note These buffer memory devices are stored located within the FXon 3A 6 Diagnostics 6 1 Preliminary Checks a Check whether the inpu
8. no responsibility for actual use of the product based on these illustrative examples Owing to the very great variety in possible application of this equipment you must satisfy yourself as to its suitability for your specific application Manual number JY992D49001 Manual revision F Date April 2015 MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE TOKYO BUILDING 2 7 3 MARUNOUCHI CHIYODA KU TOKYO 100 8310 JAPAN Effective April 2015 Specifications are subject to change without notice JY992D49001F
9. operation range to be selected see table below using the selected generator or analog output 3 Adjust the A D OFFSET potentiometer pot until a digital value of 1 is read in DOO Note Turn the pot clockwise and the digital value will increase The pot requires 18 revolutions to move between the minimum and maximum settings Analog input range 0 10V DC 0 5V DC 4 20mA DC Offset calibration value 0 040V 0 020V 4 064mA 7 2 3 Calibrating the Gain 1 Run the previously detailed program Ensure X02 is ON 2 Generate a gain voltage current in accordance with the analog operation range to be selected see table below using the selected generator or analog output 3 Adjust the A D GAIN potentiometer pot until a digital value of 250 is read in DOO Note 1 Turn the pot clockwise and the digital value will increase The pot requires 18 revolutions to move between the minimum and maximum settings Note 2 When necessary to maximize the 8 bit resolution the digital value used in the gain adjustment detailed above should be replaced with 255 This section has been written to demonstrate 250 full scale calibration Analog input range 0 10V DC 0 5V DC 4 20mA DC Gain calibration value 10 000V 5 000V 20 000mA 7 3 Method of Calibration D A Use the following program and the appropriate wiring configuration to calibrate the output channel of the FXON 3A o J t AID Ta GAIN S D A
10. 3A occupies 8 I O points on the PLC s expansion bus The 8 I O points can be allocated from either inputs or outputs 1 1 External Dimensions Mass Approx 0 2kg 0 44lbs Dimensions mm inches 35mm DIN rail groove Extension cable LAD INI INIA enog NI eNA Mounting hole 2 holes 4 5 0 18 dia INOA N09 1nol CH1 Current Voltage input output CH2 CH1 Voltage Current input output CH2 e When a current input is used ensure that the terminals marked VIN 1 and IIN 1 are linked Do not connect the VOUT and IOUT terminals when the current output is used 1 terminal number 1 or 2 is identified here e f any voltage ripple is experienced on the voltage inputs outputs or if there is excessive electrical noise connect a capacitor of 0 1 to 0 47uF approx 25V rating at position 2 3 Connection with PLC 1 Up to 4 FXon 3A units can connect to the FXonN series PLC up to 5 for FX1N up to 8 for FX2N or up to 4 for an FX2nc series PLC all with powered extension units However the following limitation exists when the undermentioned special function blocks are con nected FX2N Main unit and powered extension units of 32 I O points or less Consumption current available for undermentioned special function blocks lt 190mA FX2N Main unit and powered extension units of 48 I O points or more
11. 5 MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE TOKYO BUILDING 2 7 3 MARUNOUCHI CHIYODA KU TOKYO 100 8310 JAPAN Effective April 2015 JY992D49001F Specifications are subject to change without notice MITSUBISHI ELECTRIC PROGRAMMABLE CONTROLLERS MdleLSteGelr FXon 3A SPECIAL FUNCTION BLOCK USER S GUIDE JY 992D49001F This manual contains text diagrams and explanations which will guide the user in the correct installation and operation of the FXon 3A 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 FXon FX1N FX2n FX2enc SERIES HARDWARE MANUAL 1 Introduction e The FXon 3A analog special function block has two input channels and one output channel The input channels receive analog signals and convert them into digital values The output channel takes a digital value and outputs an equivalent analog signal The FXon 3A has a maximum resolution of 8 bits e The selection of voltage or current based input output is decided by user wiring e An FXon 3A can connected to the FX2N FX2Nc FX1N or FXON series of Programmable Controllers Hereafter referred to as a PLC e All data transfers and parameter setups are adjusted through software control for the FXon 3A via TO FROM applied instructions in the PLC Communications between the PLC and FXoN 3A are protected by a photo coupler e An FXon
12. 5mm DIN rail groove Extension cable LAD INI INIA enog NI eNA Mounting hole 2 holes 4 5 0 18 dia LNOA N09 1nol CH1 Current Voltage input output CH2 CH1 Voltage Current input output CH2 e When a current input is used ensure that the terminals marked VIN 1 and IIN 1 are linked Do not connect the VOUT and IOUT terminals when the current output is used 1 terminal number 1 or 2 is identified here e f any voltage ripple is experienced on the voltage inputs outputs or if there is excessive electrical noise connect a capacitor of 0 1 to 0 47uF approx 25V rating at position 2 3 Connection with PLC 1 Up to 4 FXon 3A units can connect to the FXonN series PLC up to 5 for FX1N up to 8 for FX2N or up to 4 for an FXa2nc series PLC all with powered extension units However the following limitation exists when the undermentioned special function blocks are con nected FX2N Main unit and powered extension units of 32 I O points or less Consumption current available for undermentioned special function blocks lt 190mA FX2N Main unit and powered extension units of 48 I O points or more Consumption current available for undermentioned special function blocks lt 300mMA FX2Nc Up to 4 undermentioned special function blocks can be connected regardless of the system I O FXON 1N Main unit and powered extension unit
13. MITSUBISHI ELECTRIC PROGRAMMABLE CONTROLLERS MdleLSteGelr FXon 3A SPECIAL FUNCTION BLOCK USER S GUIDE JY 992D49001F This manual contains text diagrams and explanations which will guide the user in the correct installation and operation of the FXon 3A 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 FXon FX1N FX2an FX2nc SERIES HARDWARE MANUAL 1 Introduction e The FXon 3A analog special function block has two input channels and one output channel The input channels receive analog signals and convert them into digital values The output channel takes a digital value and outputs an equivalent analog signal The FXon 3A has a maximum resolution of 8 bits e The selection of voltage or current based input output is decided by user wiring e An FXon 3A can connected to the FX2N FX2Nc FX1N or FXON series of Programmable Controllers Hereafter referred to as a PLC e All data transfers and parameter setups are adjusted through software control for the FXon 3A via TO FROM applied instructions in the PLC Communications between the PLC and FXoN 3A are protected by a photo coupler e An FXon 3A occupies 8 I O points on the PLC s expansion bus The 8 I O points can be allocated from either inputs or outputs 1 1 External Dimensions Mass Approx 0 2kg 0 44lbs Dimensions mm inches 3
14. The extension cable is properly connected Otherwise Check the connection of the extension cable e Check the external wiring e Check whether the output load connected to the analog output terminal is within the following specified limits Voltage output 1kQ to 1MQ Current output 500Q or less e Check whether the impedance of the input device is within the specified limits Voltage input 200kQ Current input 250Q e Check the calibration of the FXoN 3A s analog channels input and output using a voltmeter ammeter as required See previous two sections for a detailed explanation Guidelines for the safety of the user and protection of the FXon 3A Special function block e This manual has been written to be used by trained and competent personnel This is defined by the European directives for machinery and EMC If in doubt at any stage during the installation of the FXon 3A always consult a professional electrical engineer who is qualified and trained to the local and national standards If in doubt about the operation or use of the FXon 3A please consult the nearest Mitsubishi Electric distributor 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
15. cess is executed and an analog signal equivalent to the digital value stored in this example is output to register D02 The contents of D2 are written to BFM 16 This will be converted to an analog output TO KO K17 H04 K1 H04 is written to BFM 17 to start the D A conversion process TO KO K17 HOO K1 TO KO K16 D02 K1 MO 1 The time TAD required to write an analog input channel is calculated as follows TAD TO instruction processing time x 3 Note The 3 TO instruction format shown above should always be used when writing data to the FXON 3A s analog output channel Details on both the FROM and TO instructions functions 78 and 79 respectively can be found in the FX series Programming Manual II 8 3 Using FX1N FX2N V3 00 or more or FX2Nc V3 00 or more Series PLC s Please use FNC 176 RD3A and FNC 177 WR3A Refer to FX Series Programming Manual II 9 Error Checking If the FXoN 3A special function block does not seem to operate normally check the following items e Check the status of POWER LED Lit The extension cable is properly connected Otherwise Check the connection of the extension cable e Check the external wiring e Check whether the output load connected to the analog output terminal is within the following specified limits Voltage output 1kQ to 1MQ Current output 500Q or less e Chec
16. e 3 TO FROM command format shown above should always be used when reading data from the FXon 3A s analog input channels 8 2 Using Analog Outputs The buffer memories BFM of the FXon 3A are written TO or read FROM by the host PLC In the following program when MO is turned ON the D A conversion process is executed and an analog signal equivalent to the digital value stored in this example is output to register D02 The contents of D2 are written to BFM 16 This will be converted to an analog output H04 is written to BFM 17 to start the D A conversion process TO KO K16 D02 K1 MO 1 TO KO K17 H04 K1 TO KO K17 HOO K1 The time TAD required to write an analog input channel is calculated as follows TAD TO instruction processing time x 3 Note The 3 TO instruction format shown above should always be used when writing data to the FXON 3A s analog output channel Details on both the FROM and TO instructions functions 78 and 79 respectively can be found in the FX series Programming Manual II 8 3 Using FX1N FX2N V3 00 or more or FX2Nc V3 00 or more Series PLC s Please use FNC 176 RDSA and FNC 177 WR3A Refer to FX Series Programming Manual II 9 Error Checking If the FXoN 3A special function block does not seem to operate normally check the following items e Check the status of POWER LED Lit
17. e digital value will increase The pot requires 18 revolutions to move between the minimum and maximum settings Analog input range 0 10V DC 0 5V DC 4 20mA DC Offset calibration value 0 040V 0 020V 4 064mA 7 2 3 Calibrating the Gain 1 Run the previously detailed program Ensure X02 is ON 2 Generate a gain voltage current in accordance with the analog operation range to be selected see table below using the selected generator or analog output 3 Adjust the A D GAIN potentiometer pot until a digital value of 250 is read in DOO Note 1 Turn the pot clockwise and the digital value will increase The pot requires 18 revolutions to move between the minimum and maximum settings Note 2 When necessary to maximize the 8 bit resolution the digital value used in the gain adjustment detailed above should be replaced with 255 This section has been written to demonstrate 250 full scale calibration Analog input range 0 10V DC 0 5V DC 4 20mA DC Gain calibration value 10 000V 5 000V 20 000mA 7 3 Method of Calibration D A Use the following program and the appropriate wiring configuration to calibrate the output channel of the FXON 3A ee ae AID S D ET D A GAIN Voltage output Voltmeter Ammeter 7 3 1 Output Calibration Program X00 X01 X00 X01 TO KO Ki6 K1 K1 4 TO KO K16 K250 K1 TO KO K17 H04 K1 TO
18. e status of the PLC changes RUN gt STOP STOP gt RUN etc the analog output status will operate in the following manner Status change of the host PLC RUN gt STOP The last operational value used by the analog output channel during RUN operation is retained during STOP mode STOP gt RUN Once the host PLC is switched back into RUN mode the analog output reacts as normal to the program controlled digital values PLC power shutdown The analog output signal ceases operation d e Remember that only 8 bit digital values 0 to 255 are valid for use with the analog output of the FXON 3A 7 Change and adjustment method of input output characteristic 7 1 Change in input output characteristic At shipment O to 250 range selected for O to 10V DC input output When using an FXon 3A for current input output or differing voltage input output except 0 to 10V DC it is necessary to readjust the offset and gain The module does not allow different input characteristics for two channels Set analog values from 0 to 250 digital equivalent within the range specified in the table below when changing the input output characteristic Range of allowance of input output characteristic Voltage Current Voltage Current input input a Analog value when digital value is 0 Oto1V to 1V OtodmA to 4mA Analog value when digital value is 250 5 to ee 5 to a Resolution changes depending on the set value when the input outpu
19. k whether the impedance of the input device is within the specified limits Voltage input 200kQ Current input 250Q e Check the calibration of the FXoNn 3A s analog channels input and output using a voltmeter ammeter as required See previous two sections for a detailed explanation Guidelines for the safety of the user and protection of the FXon 3A Special function block e This manual has been written to be used by trained and competent personnel This is defined by the European directives for machinery and EMC If in doubt at any stage during the installation of the FXon 3A always consult a professional electrical engineer who is qualified and trained to the local and national standards If in doubt about the operation or use of the FXon 3A please consult the nearest Mitsubishi Electric distributor 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 actual use of the product based on these illustrative examples Owing to the very great variety in possible application of this equipment you must satisfy yourself as to its suitability for your specific application Manual number JY992D49001 Manual revision F Date April 201
20. ry to readjust the offset and gain The module does not allow different input characteristics for two channels O to 10V 0 to 5V DC resistance 200kQ Warning this unit may be damaged by input voltages in excess of 0 5V 15V Analog input range 4 to 20mA resistance 2509 Warning this unit may be damaged by input currents in excess of 2mA 60mA Digital resolution 40mV 0 to 10V 0 to 250 At shipment 64uA 4 to 20mA 0 to 250 Change depending on the input Change depending on the input characteristic characteristic Processing time TO instruction processing time x 2 FROM instruction processing time Smallest input sig nal resolution At shipment 5 N oO oO N o1 Input characteristics DIGITAL VALUE DIGITAL VALUE 3 DIGITAL VALUE i 4 064 10 2 V 20 32 mA gt 5 i i i i 0 040 10 0 0 020 5 ANALOG INPUT VOLTS ANALOG INPUT VOLTS ANALOG INPUT mA The module does not allow different input characteristics for two channels ee Voltage output Current output At shipment 0 to 250 range selected for 0 to 10V DC output When using an FXon 3A for current output or differing voltage output except 0 to Analog output range 10V DG it is necessary to readjust the offset and gain DC 0 to 10V 0 to 5V external load 1kQ to 1MQ 4 to 20mA external load 500Q or less Digital resolution 8 bits 40mV 0 to 10V 0 to 250 At shipment 64uA 4 to 20mA 0 to 250 Change depending on
21. s Note 2 When it is necessary to maximize the 8 bit resolution the digital value used in the gain adjustment detailed above should be replaced with 255 This section has been written to demonstrate a 250 full scale calibration Analog output range 0 10V DC 0 5V DC 4 20mA DC Gain calibration meter value 10 000V 5 000V 20 000mA 8 Program example 8 1 Using Analog Inputs The buffer memories BFM of the FXon 3A are written TO or read FROM by the host PLC The following program reads the analog input from channel 1 of the FXon 3A when MO is ON and the analog input data of channel 2 when M1 is ON HOO is written to BFM 17 selecting A D input channel 1 H02 is written to BFM 17 starting the A D conversion process for channel 1 Saou hor o 1 boo 1G cea is read storing the current value of channel 1 in register M1 TO KO K17 HO1 Kt H01 is written to BFM 17 now selecting A D input channel 2 H03 is written to BFM 17 to re start the A D conversion process but for channel 2 BFM 0 is read storing the current value of channel 2 in register DO1 The time TAD required to read an analog input channel is calculated as follows TAD TO instruction processing time x 2 FROM instruction processing time TO KO K17 HOO K1 TO KO K17 H02 K1 TO KO K17 HO3 K1 FROM KO KO DO1 K1 Note Th
22. s Up to 2 undermentioned special function blocks can be FX2N 2AD FX2N 2DA FXon 3A connected regardless of the system I O Consumption current of 24V DC for one unit 90mA The consumption current of the above units is to be subtracted from the service power supply of the host PLC 2 FXon 3A consumes 5V DC by 30mA The total 5V consumption of all special function blocks connected to either the FX2N or FX2Nc main unit or an FX2N extension unit must not exceed the 5V voltage source capacity of the system 3 The FXon 3A and main unit are connected by a cable on the right of the main unit 4 Installation notes and Usage 4 1 General and Environmental Specifications General specifications ex withstand voltage Withstand Voltage 500V AC for 1 minute between ground and all other terminals Analog circuit power requirement 24V DC 10 90mA internal power supply from main unit Digital circuit power requirement 5V DC 30mA internal power supply from main unit Photo coupler isolation between analog and digital circuit No isolation between analog channels Same as those for the main unit Isolation Number of occupied I O points 8 I O points from expansion bus either input or output 4 2 Performance Specifications a Voltage input Current input At shipment 0 to 250 range selected for 0 to 10V DC input When using an FXon 3A for current input or differing voltage inputs except 0 to 10V DC it is necessa
23. t characteristic is changed Example Resolution becomes 5 to OV 250 20mvV at voltage input 0 to 5V 0 to 250 Overall accuracy does not change Voltage input 0 1V Current input 0 16mA 7 2 Method of Calibration A D Both analog input channels share the same setup and configuration Hence only one channel needs to be selected to perform the calibration for both analog input channels Use the following program and the appropriate wiring configuration to calibrate input channel 1 and indirectly channel 2 of the FXon 3A Vin2 lin2 com2 Fvint tint COM VIN2 lIN2_ COM2 Vin1 IIN1 COM1 External External A D GAIN voltage D A OFFSET input DIA GAIN current Vin2 lin2 com2 vind lint COM4 Integral Integral voltage input current 7 2 1 Input Calibration Program TO KO K17 HOO K1 TO KO K17 H02 K1 FROM KO KO DO K1 7 2 2 Calibrating the Offset 1 Run the previously detailed program Ensure X02 is ON 2 Generate an offset voltage current in accordance with the analog operation range to be selected see table below using the selected generator or analog output 3 Adjust the A D OFFSET potentiometer pot until a digital value of 1 is read in DOO Note Turn the pot clockwise and th
24. t output wiring and or expansion cables are properly connected b Check that the system configuration rules for the host PLC have not been broken c Ensure that the correct operating range has been selected for the application d As the status of the PLC changes RUN gt STOP STOP gt RUN etc the analog output status will operate in the following manner Status change of the host PLC RUN gt STOP The last operational value used by the analog output channel during RUN operation is retained during STOP mode STOP gt RUN Once the host PLC is switched back into RUN mode the analog output reacts as normal to the program controlled digital values PLC power shutdown The analog output signal ceases operation e Remember that only 8 bit digital values 0 to 255 are valid for use with the analog output of the FXON 3A 7 Change and adjustment method of input output characteristic 7 1 Change in input output characteristic At shipment O to 250 range selected for O to 10V DC input output When using an FXon 3A for current input output or differing voltage input output except 0 to 10V DC it is necessary to readjust the offset and gain The module does not allow different input characteristics for two channels Set analog values from 0 to 250 digital equivalent within the range specified in the table below when changing the input output characteristic Range of allowance of input output characteristic Voltage Current
25. the input Change depending on the input characteristic characteristic Smallest output signal resolution Processing time TO instruction processing time x 3 At shipment 20 32 mA 10 2V p m Output characteristics o ANALOG OUTPUT ANALOG OUTPUT oe DIGITAL VALUE DIGITAL VALUE DIGITAL VALUE If digital source data of greater than 8 bits is used only the lower 8 bits will be valid Additional upper bits will be ignored 5 Allocation of Buffer Memories BFM When FNC176 RD3A and FNC177 WR3A are used with FX1n FX2n V3 00 or more or FX2nc V3 00 or more the allocation of the buffer memory BFM need not be considered 0 Current value input data stored in 8 bits of the A D channel selected by bO of BFM 17 EO Reserved Current value output data on D A channel stored in 8 bits Reserved A D e BFM 17 bO 0 analog input channel 1 is selected bO 1 analog input channel 2 is selected b1 0 1 the A D conversion process is started b2 1 gt 0 the D A conversion process is started e Note These buffer memory devices are stored located within the FXon 3A 6 Diagnostics 6 1 Preliminary Checks Check whether the input output wiring and or expansion cables are properly connected oO Check that the system configuration rules for the host PLC have not been broken O Ensure that the correct operating range has been selected for the application As th
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