Mitsubishi Electronics FX2N-8AD Table 8.5: Bit assignment in BFM #28

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 upper limit and disconnection detection

b4 CH3 Scale over: Less than lower limit

b5 Scale over: More than upper limit and disconnection detection

b6 CH4 Scale over: Less than lower limit

b7 Scale over: More than upper limit and disconnection detection

b8 CH5 Scale over: Less than lower limit

b9 Scale over: More than upper limit and disconnection detection

b10 CH6 Scale over: Less than lower limit

b11 Scale over: More than upper limit and disconnection detection

b12 CH7 Scale over: Less than lower limit

b13 Scale over: More than upper limit and disconnection detection

b14 CH8 Scale over: Less than lower limit

b15 Scale over: More than upper limit and disconnection detection

Contents

Main FX2N-8AD Analog input block Foreword Page Page Guidelines for the Safety of the User and Protection of the FX input block. Page Page Page Page 9. Adjustment of I/O Characteristics........................................................9-1 1. Introduction Page External Dimensions 2 FX2N-8AD Analog input block 2-1 2. External Dimensions 8(0.31) 105(4.13) Figure 2.1: External Dimensions POWER 24V Page Part Name 3 FX2N-8AD Analog input block 3-1 3. Part Name FX2N-8AD Terminal arrangement POWER 24V Page 4. Installation FX2N-8AD Analog input block Installation 4 4-2 Figure 4.1: Installation with DIN rail 67(2.64) I3+ 24- POWER 5. Connection to PLC Page 6. Wiring 6.1 Caution Figure 6.1: Crimp Terminals FX2N-8AD Analog input block Wiring 6 6-2 Figure 6.2: Wiring Figure 6.3: Crimp Terminals For M3 (0.12") 6.2 mm (0.24" ) or less For M3 (0.12") 6.2 mm (0.24") or less Page Page 7. Specifications Table 7.1: General specifications Table 7.2: Power supply specifications Table 7.3: Performance specifications FX2N-8AD Analog input block Specifications 7 7-3 Table 7.4: Voltage/current input specifications Item Voltage input Current input 2.50 5.00 Table 7.5: Thermocouple input specifications 8. Buffer Memory (BFM) Page 8-3 8.1 Buffer Memories (BFM) lists 8-4 8-5 8-6 8-7 8-8 8-9 #99 Clearness of upper and lower limit value error and sudden change detection error K0 8-10 8-11 8-12 8.2 Details of buffer memories Page Page Page Page Page Page Page Table 8.2: Bit assignment in BFM #26 Table 8.3: Bit assignment in BFM #27 Table 8.4: Range in which A/D conversion is available Table 8.5: Bit assignment in BFM #28 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 Page Table 8.7: Standard digital value Table 8.8: Initial offset/gain value Table 8.9: Setting range Page Page Table 8.10: Setting range Page Table 8.11: Setting range Table 8.12: Bit assignment in BFM #99 Page Table 8.13: Bit assignment Page Page Table 8.14: Assignment of lower eight bits Table 8.15: Assignment of upper eight bits Table 8.16: Assignment of channel No. and BFM No. Page 9. Adjustment of I/O Characteristics 9.1 Standard I/O characteristics Figure 9.1: Standard I/O characteristics 9-3 4. Current input, 4 to 20 mA, 16 mA x 1/4,000 5. Current input, direct display (4,000 to 20,000) 9-4 6. Current input, -20 to +20 mA, 40 mA x 1/16,000 7. Current input, -20 to +20 mA, 40 mA x 1/8,000 8. Current input, direct display (-20,000 to +20,000) 9. Thermocouple input, K type, Celsius 9-5 A. Thermocouple input, J type, Celsius B. Thermocouple input, T type, Celsius C. Thermocouple input, K type, Fare nheit D. Thermocouple input, J type, Farenheit E. Thermocouple input, T type, Farenheit 9-6 Page 9-8 Figure 9.2: Example program 10. Example program Page 10-3 Figure 10.1:Example program 10-4 Outputs the upper/lower limit value error status of each channel. Outputs the scale over error status of each channel . 10-5 Note: Page Appendix A: Associated Manuals List For further information manual about FX Series, refer to following table. Table A-1: List of Further Information Manual Page Page USERS MANUAL