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Description
3.6 RS 485 interface
SENTRON PAC3100
26
Manual, 07/2009, A5E02385159B-01
Remote control via the RS 485 interface
The integral RS 485 interface enables remote control of the digital outputs. The Modbus
function codes are listed in the Appendix.
Wiring
Both digital outputs are passive and implemented exclusively as switches.
Implementation of the pulse function corresponds to the IEC 62053-31 standard.
Pulse length, turn-off time
(1)
Pulse length
(2)
Turn-off time
Figure 3-9
Pulse length and turn-off time
●
Pulse length:
Time for which the signal at the digital output is "high". The minimum pulse length is
30 ms and the maximum 500 ms.
●
Turn-off time:
Time for which the signal at the digital output is "low". The turn-off time depends on the
measured energy, for example, and can be days or months.
●
Minimum turn-off time:
The minimum turn-off time corresponds to the programmed pulse length. 30 ms is the
absolute minimum.
See also
3.6
RS 485 interface
RS 485 interface for Modbus RTU communication
The SENTRON PAC3100 is equipped with an RS 485 interface for Modbus RTU
communication.
Application
This interface permits:
●
Reading out the measured values
●
Reading and writing the device settings
Содержание SENTRON PAC3100
Страница 10: ...Table of contents SENTRON PAC3100 10 Manual 07 2009 A5E02385159B 01 ...
Страница 38: ...Mounting 5 3 Deinstallation SENTRON PAC3100 38 Manual 07 2009 A5E02385159B 01 ...
Страница 100: ...Parameterizing 9 2 Parameterizing the operator interface SENTRON PAC3100 100 Manual 07 2009 A5E02385159B 01 ...
Страница 104: ...Service and maintenance 10 5 Disposal SENTRON PAC3100 104 Manual 07 2009 A5E02385159B 01 ...
Страница 118: ...Dimensional drawings SENTRON PAC3100 118 Manual 07 2009 A5E02385159B 01 ...
Страница 142: ...Appendix A 3 Correction sheet SENTRON PAC3100 142 Manual 07 2009 A5E02385159B 01 ...
Страница 146: ...List of abbreviations C 1 Abbreviations SENTRON PAC3100 146 Manual 07 2009 A5E02385159B 01 ...
Страница 148: ...Glossary SENTRON PAC3100 148 Manual 07 2009 A5E02385159B 01 ...
Страница 152: ...Index SENTRON PAC3100 Manual 07 2009 A5E02385159B 01 152 ...