ADAM-4000 Series User Manual
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B.1
Analog Input Formats
The ADAM analog input modules can be configured to transmit data to the host in
one of the following data formats:
Engineering Units
Percent of FSR
Twos complement hexadecimal
Ohms
B.1.1
Engineering Units
Data can be represented in engineering units by assigning bits 0 and 1 of the data
format/checksum/integration time parameter with value 00.
This format presents data in standard units such as degrees, volts, millivolts and mil
-
liamps. When the value in engineering format is converted to computer language, it is
presented in seven characters. These characters may include sign and decimals.
However, the number of characters can not exceed seven.
Data is grouped into a plus (+) or minus (-) sign, followed by five decimal digits and a
decimal point. The input range which is employed determines the resolution or the
number of decimal places used as illustrated in the following examples:
Example 1
The input value is -2.65 and the corresponding analog input module is configured for
a range of ±5 V. The response to the Analog Data In command is: -2.6500 (cr)
Example 2
The input value is 305.5°C, and the analog input module is configured for a type J
thermocouple whose range is (0°C to 760°C). The response to the Analog Data In
command is: +305.50 (cr)
Example 3
The input value is +5.653 V. The analog input module is configured for a ±5 V range.
When the engineering unit format is used, the ADAM Series analog input modules
are configured so that they automatically provide an over-range capability. The
response to the Analog Data In command in this case is: +5.6530 (cr)
Summary of Contents for Adam - 4021
Page 1: ...User Manual ADAM 4000 Series Data Acquisition Modules...
Page 4: ...ADAM 4000 Series User Manual iv...
Page 12: ...ADAM 4000 Series User Manual xii...
Page 13: ...Chapter 1 1 Introduction...
Page 16: ...ADAM 4000 Series User Manual 4...
Page 17: ...Chapter 2 2 Installation Guideline...
Page 33: ...Chapter 3 3 I O Modules...
Page 78: ...ADAM 4000 Series User Manual 66...
Page 79: ...Chapter 4 4 Command Set...
Page 99: ...87 ADAM 4000 Series User Manual Chapter 4 Command Set...
Page 100: ...ADAM 4000 Series User Manual 88...
Page 101: ...Chapter 5 5 Analog Input Module Commands...
Page 127: ...Chapter 6 6 Analog Output Module Commands...
Page 144: ...ADAM 4000 Series User Manual 132...
Page 145: ...Chapter 7 7 I O Relay Counter Frequency...
Page 201: ...Chapter 8 8 Calibration...
Page 206: ...ADAM 4000 Series User Manual 194...
Page 207: ...Appendix A A Technical Specifications...
Page 216: ...ADAM 4000 Series User Manual 204 Figure A 5 ADAM 4024 Function Diagram...
Page 232: ...ADAM 4000 Series User Manual 220 Figure A 14 ADAM 4080 Function Diagram...
Page 233: ...Appendix B B Data Formats and I O Ranges...
Page 244: ...ADAM 4000 Series User Manual 232...
Page 245: ...Appendix C C Technical Diagrams...
Page 246: ...ADAM 4000 Series User Manual 234 C 1 ADAM Dimensions Figure C 1 ADAM Modules Dimensions...
Page 248: ...ADAM 4000 Series User Manual 236 Figure C 3 DIN Rail Mounting...
Page 250: ...ADAM 4000 Series User Manual 238 C 2 3 Piggyback Stack Figure C 6 Piggyback Stack...
Page 251: ...Appendix D D Utility Software...
Page 258: ...ADAM 4000 Series User Manual 246...
Page 259: ...Appendix E E RS 485 Network...
Page 264: ...ADAM 4000 Series User Manual 252...
Page 265: ...Appendix F F Using the Checksum Feature...
Page 268: ...ADAM 4000 Series User Manual 256...
Page 269: ...Appendix G G I O Modbus Mapping Table...
Page 283: ...Appendix H H Changing to Modbus Protocol...
Page 285: ...273 ADAM 4000 Series User Manual Appendix H Changing to Modbus Protocol...