326
Analog I/O (XA CPU Units)
Section 5-5
0 to 20 mA Inputs
When the resolution is set to 1/6,000, the 0 to 20-mA range corresponds to
hexadecimal values 0000 to 1770 (0 to 6,000). The entire data range is FED4
to 189C (
−
300 to 6,300).
When the resolution is set to 1/12,000, the 0 to 20-mA range corresponds to
hexadecimal values 0000 to 2EE0 (0 to 12,000). The entire data range is
FDA8 to 3138 (
−
600 to 12,600).
A negative voltage is expressed as a two’s complement.
The following diagram shows conversion values for 1/6,000 resolution.
4 to 20 mA
When the resolution is set to 1/6,000, the 4- to 20-mA range corresponds to
hexadecimal values 0000 to 1770 (0 to 6,000). The entire data range is FED4
to 189C (
−
300 to 6,300).
When the resolution is set to 1/12,000, the 4- to 20-mA range corresponds to
hexadecimal values 0000 to 2EE0 (0 to 12,000). The entire data range is
FDA8 to 3138 (
−
600 to 12,600).
Inputs between 3.2 and 4 mA are expressed as two’s complements. If the
input falls below 3.2 mA, open-circuit detection will activate and converted
data will be 8000.
1 V
5 V 5.2 V
0.8 V
FED4 (
−
300)
189C (6300)
1770 (6000)
0000 (0)
Converted Data
Hexadecimal (Decimal)
0 mA
20 mA 21 mA
−
1 mA
FED4 (
−
300)
189C (6300)
1770 (6000)
0000 (0)
Converted Data
Hexadecimal (Decimal)
Содержание CP1H CPU UNITS - PROGRAMMING 05-2007
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Страница 3: ...CP1H X40D CP1H XA40D CP1H Y20DT D CP1H CPU Unit Operation Manual Revised March 2009...
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Страница 34: ...xxxiv Conformance to EC Directives 6...
Страница 174: ...140 CP series Expansion I O Unit Wiring Section 3 6...
Страница 370: ...336 Analog I O XA CPU Units Section 5 5...
Страница 552: ...518 Trouble Shooting Section 8 7...
Страница 595: ...561 Sample Application Section 9 12 Network Settings Network Tab Network Settings Driver Tab...
Страница 598: ...564 Sample Application Section 9 12...
Страница 642: ...608 Standard Models Appendix A...
Страница 643: ...609 Appendix B Dimensions Diagrams X XA and Y CPU Units 90 100 110 140 150 8 85 Four 4 5 dia holes...
Страница 652: ...618 Dimensions Diagrams Appendix B...
Страница 745: ...711 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Страница 746: ...712 Connections to Serial Communications Option Boards Appendix F...
Страница 776: ...742 PLC Setup Appendix G...
Страница 778: ...744 Specifications for External Power Supply Expansion Appendix H...
Страница 786: ...752 Revision History...