Mitsubishi Electric FX2N-8AD - Manuals

FX2N-8AD Analog input block iv Notes on the Symbols Used in this Manual At various times throughout this manual certain symbols will be used to highlight points whichare intended to ensure the users personal safety and protect the integr ity of equipment.Whenever any of the following symbols are enc...

FX2N-8AD Analog input block Contents. vii Guideline............................................................................................................................ iii 1. Introduction .........................................................................................1-12. External ...

FX2N-8AD Analog input block Contents. viii 8.2.14 BFM #32: Operating time .................................................................................. 8-26 8.2.15 BFM#33 disconnection detection (Only goods: since V1.10). ........................... 8-27 8.2.16 BFM #41 to BFM #48: Offset data B...

Introduction 1 1-1 1. Introduction The FX 2N -8AD analog input block (hereafter referred to as "FX 2N -8AD") conver ts 8 points of analog input values (voltage input, current input and temperature input) into digital values, andtransfers them to the PLC main unit.The FX 2N -8AD can be connec...

FX2N-8AD Analog input block Introduction 1 1-2 4) Up to two FX 2N -8AD units can be connected to FX 0N main unit, FX 0N extension unit, FX 1N main unit.Up to eight FX 2N -8AD units can be connected to one FX 2N Series PLC. Up to four FX 2N - 8AD units can be connected to one FX 2NC Series PLC. (For ...

External Dimensions 2 2-1 2. External Dimensions Figure 2.1: External Dimensions COM2 I8+ I4+ V3+ I3+ COM3 COM1 COM5 COM8 I5+ 24+ 24- POWER 24V V2+ I2+ V4+ V7+ V1+ I1+ COM4 V5+ V6+ I7+ I6+ COM6 COM7 V8+ 7.5(0.30) 7.5(0.30) 105(4.13) 8(0.31) 75(2.95) 90(3.54) 67(2.64) (installation dimension) 75(2.95...

FX2N-8AD Analog input block External Dimensions 2 2-2 MEMO

Part Name 3 3-1 3. Part Name • For wiring, refer to Section 6. • Never perform wiring to terminals. Table 3.1: Status indicator LED Indication Description POWER Lit while 5 V power is normally supplied from PLC. 24 V Lit while 24 V power is normally supplied to “24+” and “24-” terminals of FX 2N -8A...

Installation 4 4-1 4. Installation Install the FX 2N -8AD to the right side of a main unit, extension unit, extension block or special block of the FX 0N /FX 1N /FX 2N /FX 2NC Series PLC. The FX 2N -8AD can be installed with a DIN rail (DIN46277 of 35 mm in width) or directly installed with screws M...

FX2N-8AD Analog input block Installation 4 4-2 Figure 4.1: Installation with DIN rail • The FX 2N -8AD can be installed on a DIN rail (DIN46277) of 35 mm in width as it is. Forremoval, pull down on the DIN rail mountinghook, then remove the FX 2N -8AD. Figure 4.2: Direct installation • The FX 2N -8A...

Connection to PLC 5 5-1 5. Connection to PLC Connect the FX 2N -8AD to the right side of a main unit, extension unit or extension block of FX 0N , FX 1N , FX 2N , FX 2NC Series PLC with an extension cable. For connection to a basic unit or extension block of the FX 2NC Series PLC, use an FX 2NC -CNV...

Wiring 6 6-1 6. Wiring 6.1 Caution 1) Do not lay signal cable near to high voltage power cable or house them in the same trunking duct. Effects of noise or surge induction may occur. Keep signal cables a safe distance ofmore than 100 mm (3.94") from these power cables. 2) The terminal screws of ...

FX2N-8AD Analog input block Wiring 6 6-2 Figure 6.2: Wiring Figure 6.3: Crimp Terminals V3+ COM3 I3+ V2+ I2+ V1+ I1+ COM1 24+ 24- *3 *2 *1 Shielded cable Thermocouple(K, J or T type) Current input Voltage input 250 Ω 5.8k Ω 250 Ω 5.8k Ω 5.8k Ω 250 Ω 200k Ω CH3 CH2 CH1 AG *5 DC24V Class D grounding *...

Specifications 7 7-1 7. Specifications Table 7.1: General specifications Item Specifications Ambient temperature range 0 to +55 ° C during operation, -20 to +70 ° C during storage Ambient humidity 35 to 85 % RH during operation (Dew condensation shall not be allowed.) Vibration resistance In conform...

FX2N-8AD Analog input block Specifications 7 7-4 • For the I/O characteristics of the voltage/current/thermocouple input, refer to Section 9. • FX 2N -8AD is from production goods (SERIAL 0Z****) to V1.10 in December, 2000. Table 7.5: Thermocouple input specifications Item K type thermocouple J type...

Buffer Memory (BFM) 8 8-1 8. Buffer Memory (BFM) Caution 1) Do not access the buffer memory of “Reserved” (BFM #18, #23, #25, #31, #33 to #40, #49 to 50, #59, #60, #69, #70, #79, #80, #89, #90, #99, #100, #120 to #197) by the FROM/TO instruction. There is a possibility to cause abnormal operation of...

FX2N-8AD Analog input block Buffer Memory (BFM) 8 8-2 Data transfer between the FX 2N -8AD and the PLC main unit is perfor med through buffer memories (hereafter referred to as "BFM") of the FX 2N -8AD. Each BFM consists of 1 word, 16 bits. The BFM No. 0 to 3399 and a function are assigned t...

FX2N-8AD Analog input block Buffer Memory (BFM) 8 8-3 8.1 Buffer Memories (BFM) lists Table 8.1: BFM Lists BFM No. Description Hold against power failure Initial value #0 Specifies input mode of CH1 to CH4. ¡ H0000 at shipment #1 Specifies input mode of CH5 to CH8. ¡ H0000 at shipment #2 Number of t...

FX2N-8AD Analog input block Buffer Memory (BFM) 8 8-13 8.2 Details of buffer memories 8.2.1 BFM #0, #1: Specifies input mode. Specify the input mode of CH1 to CH4 by writing a numeric value to BFM #0. Specify the inputmode of CH5 to CH8 by writing a numeric value to BFM #1.In the input mode specific...

FX2N-8AD Analog input block Buffer Memory (BFM) 8 8-16 Update of average data • When the number of times of averaging (BFM #2 to BFM #9) is set to "400" or less, theaverage (BFM #10 to BFM #17) is updated ever y time the A/D conversion processing isperformed.At this time, the average is alwa...

FX2N-8AD Analog input block Buffer Memory (BFM) 8 8-18 8.2.6 BFM #21: Writes I/O characteristics Each channel No. is assigned to the lower eight bits of BFM #21.When a bit is set to ON, the offset data (BFM #41 to BFM #48) and the gain data (BFM #51 toBFM #58) of the assigned channel No. are written...

FX2N-8AD Analog input block Buffer Memory (BFM) 8 8-19 8.2.7 BFM #22: Sets convenient functions The functions described below are assigned to b0 to b3 of BFM #22. When a bit is set to ON,the assigned function becomes valid.When a bit is set to OFF, the assigned function becomes invalid. b0: Data add...

FX2N-8AD Analog input block Buffer Memory (BFM) 8 8-20 8.2.8 BFM #24: Specifies high-speed conversion channel When using only the voltage input mode and the current input mode, you can improve the A/Dconversion timing (to 1/4 of the normal timing) for only one channel among CH1 to CH8.However, the c...

FX2N-8AD Analog input block Buffer Memory (BFM) 8 8-24 Table 8.5: Bit assignment in BFM #28 Bit No. Channel No. Description b0 CH1 Scale over: Less than lower limit b1 Scale over: More than upper limit and disconnection detection b2 CH2 Scale over: Less than lower limit b3 Scale over: More than uppe...

FX2N-8AD Analog input block Buffer Memory (BFM) 8 8-25 8.2.12 BFM #29: Error status The error information is assigned to each bit of BFM #29. Table 8.6: Bit assignment in BFM #29 Bit No. Assignment Description b0 Error detected b0 is ON while either one among b1 to b4 is ON. b1 Offset/gain set value...

FX2N-8AD Analog input block Buffer Memory (BFM) 8 8-26 8.2.13 BFM #30: Model code BFM #30 stores the fixed value "K2050". 8.2.14 BFM #32: Operating time BFM #32 stores the continuous operating time of the FX 2N -8AD. Measurement star ts when the power is turned on, and the measured value is ...

FX2N-8AD Analog input block Buffer Memory (BFM) 8 8-27 8.2.15 BFM#33 disconnection detection (Only goods: since V1.10). It does the disconnection detection of all channels used by wr iting K1 in BFM#33 in thethermo-couple input mode (Set it by BFM#1 and # 0). It executes the disconnection detection ...

FX2N-8AD Analog input block Buffer Memory (BFM) 8 8-28 8.2.16 BFM #41 to BFM #48: Offset data BFM #51 to BFM #58: Gain data Offset data : Analog input value when the digital value is "0"Gain data : Analog input value when the digital value is as shown below (The digital value varies dependin...

FX2N-8AD Analog input block Buffer Memory (BFM) 8 8-29 Initial offset/gain value (Unit: mV for voltage input, µ A for current input) Setting range However, the actual effective input range is "-10 to +10 V" or "-20 to +20 mA". Table 8.8: Initial offset/gain value Input mode (BFM #0, ...

FX2N-8AD Analog input block Buffer Memory (BFM) 8 8-35 8.2.20 BFM #99: Clears upper/lower limit value error and sudden change detection error The commands to clear the lower limit value error, the upper limit value error and the suddenchange detection error are assigned to the lower three bits of BF...

FX2N-8AD Analog input block Buffer Memory (BFM) 8 8-36 8.2.21 BFM #101 to BFM #108: Peak value (minimum value)BFM #111 to BFM #118: Peak value (maximum value) When you use the peak value hold function (BFM #22 b3), one of the convenient functions, theminimum value of the data (BFM #10 to BFM #17) of...

FX2N-8AD Analog input block Buffer Memory (BFM) 8 8-37 8.2.22 BFM #109: Peak value reset flag (minimum value)BFM #119: Peak value reset flag (maximum value) When you use the peak value hold function (BFM #22 b3), BFM #109 clears the peak value(minimum value) stored in BFM #101 to BFM #108, and BFM #...

FX2N-8AD Analog input block Buffer Memory (BFM) 8 8-38 8.2.23 BFM #198: Data history sampling time Set the data history sampling time.BFM #198 is valid only in channels for which the number of times of averaging (BFM #2 to #9)is set to "1". Setting range 0 to 30,000 ms Sampling cycle When on...

FX2N-8AD Analog input block Buffer Memory (BFM) 8 8-39 When the high-speed conversion mode is used (and only voltage input and currentinput are used) When the set value is "0" or "1" Channel specified for high-speed conversion : 1 msOther channels : 1 ms x Number of effective channel...

FX2N-8AD Analog input block Buffer Memory (BFM) 8 8-40 8.2.24 BFM #199: Resets or stops data history The data histor y reset function is assigned to the lower eight bits of BFM #199. The datahistory stop function is assigned to the upper eight bits of BFM #199.Each function is valid only in channels...

FX2N-8AD Analog input block Buffer Memory (BFM) 8 8-41 8.2.25 BFM #200 to BFM #3399: Data history The A/D conversion of each channel is sampled, and written to BFM #200 to BFM #3399.The table below shows the assignment of channel No. and BFM No. Data is stored in turn fromthe smallest BFM No.Up to 4...

Adjustment of I/O Characteristics 9 9-1 9. Adjustment of I/O Characteristics At the time of shipment from the factory, the FX 2N -8AD has the standard I/O characteristics in accordance with each input mode (BFM #0, BFM #1).In the voltage input mode and the current input mode, you can adjust the stan...

FX2N-8AD Analog input block Adjustment of I/O Characteristics 9 9-2 9.1 Standard I/O characteristics Explanation on descriptionThe input mode of the standard I/O characteristics is abbreviated as shown below. Figure 9.1: Standard I/O characteristics 0. Voltage input, -10 to 10V, 20V × 1/32,000 ➀ ➁ ➂...

FX2N-8AD Analog input block Adjustment of I/O Characteristics 9 9-7 9.2 Adjustment of I/O characteristics Adjust the I/O characteristics using the buffer memories in the FX 2N -8AD. At first, write the input mode to BFM #0 and BFM #1, write the offset data to BFM #41 to BFM#48, then write the gain d...

Example program 10 10-1 10. Example program This section introduces an example of program to take analog data to the PLC using the FX 2N - 8AD. Condition System configuration: The FX 2N -8AD (unit No. 0) is connected as a special block nearest to the FX 2N /FX 2NC Series PLC main unit. Input mode: C...

FX2N-8AD Analog input block Example program 10 10-2 Data history function: Used while sampling time is set to 0 ms (initial value).CH1 to CH4 : Sampling time = 1 ms x 6 (Number of effective channels) = 6 ms CH5 and CH6 : Sampling time = 40 ms x 6 (Number of effective channels) = 240 ms I/O assignmen...

Appendix A A-1 Appendix A:Associated Manuals List For fur ther information manual about FX Series, refer to following table. Table A-1: List of Further Information Manual Manual Name Manual No. Description FX 0 /FX 0N Hardware Manual JY992D47501 This manual contains hardware explanations of wiring, ...

HEAD OFFICE: MITSUBISHI DENKI BLDG MARUNOUCHI TOKYO 100-8310HIMEJI WORKS: 840, CHIYODA CHO, HIMEJI, JAPAN JY992D86001C(MEE) Effective Apr. 2003 Specifications are subuject tochange without notice. USER’S MANUAL FX 2N -8AD Analog input block MODEL FX2N-8AD-U-E MODEL CODE 09R608