Chapter
3
Chapter 3 I/O Modules 3-11
Alarm signaling
Analog input modules include High and Low alarm functions. High
and Low alarm limits may be downloaded into the module’s EEPROM
by the host computer.
The alarm functions can be enabled or disabled remotely. When the
alarm function is enabled, both Digital Output channels are used to
indicate the High and Low alarm states. Digital Output channel 1 (DO1)
equals to High alarm state, and Digital Output channel 0 (DO0) equals
to Low alarm state. The High and Low alarm states can be read at any
time by the host computer.
Every A/D conversion will be followed by a comparison with the
High and Low limit. When the input value exceeds one of these limits,
the High or Low alarm state is set to ON.
There are two alarm mode options, Momentary and Latching.
If the alarm is in Latching mode, the alarm will stay on even when
the input value returns within the limits. It can also be turned OFF by
issuing a Clear Alarm command from the host computer. A Latching
alarm is cleared by the module when the opposite alarm is set.
When the module receives a value that is lower than the Low alarm
limit, it will clear the High alarm and turn the Low alarm ON.
When the alarm is in Momentary mode, the alarm will be turned OFF
as soon as the input value returns within the limits.
The arrangement of coupling High and Low alarm states with
Digital Output lines may be utilized to build ON/OFF controllers that
can operate without involving the host computer.
Summary of Contents for Data Acquisition Modules ADAM 4000
Page 1: ...ADAM 4000 Data Acquisition Modules User s Manual ...
Page 7: ...Introduction 1 ...
Page 11: ...Installation Guideline 2 ...
Page 28: ...I O Modules 3 ...
Page 98: ...Chapter 3 Chapter 3 I O Modules 3 71 Figure 3 69 ADAM 4069 Form A Relay Output ...
Page 104: ...Command Set 4 ...
Page 147: ...Analog Input Module Command Set 5 ...
Page 215: ...Analog Output Module Command Set 6 ...
Page 236: ...Digital I O Relay ouput and Counter Frequency Command Set 7 ...
Page 313: ...Calibration 8 ...
Page 329: ...Technical Specifications A ...
Page 335: ...Appendix A Appendix A Technical Specification A 7 Figure A 2 ADAM 4011D Function Diagram ...
Page 337: ...Appendix A Appendix A Technical Specification A 9 Figure A 3 ADAM 4012 Function Diagram ...
Page 339: ...Appendix A Appendix A Technical Specification A 11 Figure A 4 ADAM 4013 Function Diagram ...
Page 341: ...Appendix A Appendix A Technical Specification A 13 Figure A 5 ADAM 4016 Function Diagram ...
Page 343: ...Appendix A Appendix A Technical Specification A 15 Figure A 6 ADAM 4017 4017 Function Diagram ...
Page 349: ...Appendix A Appendix A Technical Specification A 21 Figure A 8 ADAM 4018M Function Diagram ...
Page 351: ...Appendix A Appendix A Technical Specification A 23 Figure A 9 ADAM 4019 Function Diagram ...
Page 355: ...Appendix A Appendix A Technical Specification A 27 Figure A 11 ADAM 4024 Function Diagram ...
Page 357: ...Appendix A Appendix A Technical Specification A 29 Figure A 12 ADAM 4050 Function Diagram ...
Page 377: ...Data Formats and I O Ranges B ...
Page 389: ...Technical Diagrams C ...
Page 392: ...Technical Diagrams C 4 ADAM 4000 Series User s Manual Figure C 3 DIN Rail Mounting ...
Page 394: ...Technical Diagrams C 6 ADAM 4000 Series User s Manual Figure C 5 Panel Mounting ...
Page 395: ...Appendix C Appendix C Technical Diagrams C 7 C 2 3 Piggyback Stack Figure C 6 Piggyback Stack ...
Page 396: ...Utility Software D ...
Page 404: ...RS 485 Network E ...
Page 411: ...How to use the Checksum feature F ...
Page 415: ...ADAM 4000 I O Modbus Mapping Table G ...
Page 428: ...Changing Configuration to Modbus Protocol H ...