Appendix F How to use the Checksum feature F-3
Appendix
F
Example 2
This example explains how to calculate the checksum value of a Read
High alarm limit command string:
Case 1. (If the Checksum feature is disabled)
Command:
$07RH(cr)
Response:
!07+2.0500(cr) when the command is valid.
Case 2. (If the Checksum feature is enabled)
Command:
$07RH25(cr)
Response:
!07+2.0500D8(cr)
where:
25 represents the checksum of this command, and
D8 represents the checksum of the response.
The checksum of the command string is derived as shown below:
25h = (24h+ 30h + 37h + 52h + 48h) MOD 100h
The hexadecimal ASCII codes for $, 0, 7, R, H are 24h, 30h, 37h, 52h and
48h respectively. The sum of these ASCII codes is 125h. The module-
256(100h) sum of 125h is 25h.
Summary of Contents for Adam 4000 Series
Page 1: ...ADAM 4000 Series Data Acquisition Modules User s Manual...
Page 2: ......
Page 7: ...1 Introduction...
Page 11: ...2 Installation Guideline...
Page 23: ...Chapter 2 Installation Guideline 2 13 Chapter 2 Figure 2 5 Simple ON OFF Controller Function...
Page 25: ...Chapter 2 Installation Guideline 2 15 Chapter 2...
Page 26: ...2 16 ADAM 4000 Series User s Manual Installation Guideline...
Page 27: ...I O Modules 3...
Page 37: ...Chapter 3 Chapter 3 I O Modules 3 11 Figure 3 9 RTD Inputs...
Page 45: ...Chapter 3 Chapter 3 I O Modules 3 19 Figure 3 15 Digital Output used with SSR...
Page 63: ...Chapter 3 Chapter 3 I O Modules 3 37 Application Wiring Figure 3 28 Analog Output...
Page 85: ...4 Command Set...
Page 124: ...Command Set 4 40 ADAM 4000 Series User s Manual...
Page 160: ...4 76 ADAM 4000 Series User s Manual Command Set...
Page 186: ...4 102 ADAM 4000 Series User s Manual Command Set 4018M...
Page 202: ...4 118 ADAM 4000 Series User s Manual Command Set...
Page 233: ...Chapter 4 Command Set 4 149 4021 Chapter 4...
Page 234: ...4 150 ADAM 4000 Series User s Manual Command Set 4021...
Page 272: ...4 188 ADAM 4000 Series User s Manual 4080 4080D Command Set...
Page 284: ...4 200 ADAM 4000 Series User s Manual Command Set 4080 4080D...
Page 303: ...Calibration 5...
Page 315: ...A Technical Specifications...
Page 323: ...Appendix A Technical Specifications A 9 Appendix A Figure A 3 ADAM 4012 Function Diagram...
Page 325: ...Appendix A Technical Specifications A 11 Appendix A Figure A 4 ADAM 4013 Function Diagram...
Page 327: ...Appendix A Technical Specifications A 13 Appendix A Figure A 5 ADAM 4014D Function Diagram...
Page 331: ...Appendix A Technical Specifications A 17 Appendix A Figure A 7 ADAM 4017 Function Diagram...
Page 339: ...Appendix A Technical Specifications A 25 Appendix A Figure A 10 ADAM 4021 Function Diiagram...
Page 341: ...Appendix A Technical Specifications A 27 Appendix A Figure A 11 ADAM 4050 Function Diagram...
Page 343: ...Appendix A Technical Specifications A 29 Appendix A Figure A 12 ADAM 4052 Function Diagram...
Page 347: ...Appendix A Technical Specifications A 33 Appendix A Figure A 14 ADAM 4060 Function Diagram...
Page 351: ...Appendix A Technical Specifications A 37 Appendix A Figure A 16 ADAM 4080D Function Diagram...
Page 352: ...Technical specifications A 38 ADAM 4000 Series User s Manual...
Page 353: ...B Data Formats and I O Ranges...
Page 368: ...B 16 ADAM 4000 Series User s Manual Data Formats and I O Ranges...
Page 369: ...C Technical Diagrams...
Page 372: ...C 4 ADAM 4000 Series User s Manual Technical Diagrams Figure C 3 DIN Rail Mounting...
Page 374: ...C 6 ADAM 4000 Series User s Manual Technical Diagrams Figure C 5 Panel Mounting...
Page 375: ...Appendix C Technical Diagrams C 7 Appendix C C 2 3 Piggyback Stack Figure C 6 Piggyback Stack...
Page 376: ...C 8 ADAM 4000 Series User s Manual Technical Diagrams...
Page 386: ...Utility Software D 10 ADAM 4000 Series User s Manual...