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Description
3.6 RS 485 interface
SENTRON PAC3100
Manual, 07/2009, A5E02385159B-01
27
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Device firmware updates
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Update of the languages available on the device
The Modbus function codes are listed in the Appendix.
Function
The device operates as a Modbus slave.
Conditions for operation
To use the interface, the device must be parameterized in accordance with the existing
Modbus infrastructure. The communication parameters can be set on the device and via the
Modbus RTU interface.
Default communication settings
In the as-delivered state, the following default values are set:
Table 3- 5
Default Modbus RTU communication settings
Setting
Default value
Address
126
Baud rate
19200
Data format
8N2
Response time
0 (automatic)
Response time delay
The response time of the PAC3100 may have to be delayed to enable its operation as a
slave device with devices from other manufacturers on the bus. The PAC3100 can
automatically calculate the response time to suit the baud rate. This automatic calculation is
set at the factory. The delay time is individually adjustable between 1 and 255 milliseconds.
Polarization
Polarization of the RS 485 data lines must be implemented at another point on the bus. The
PAC3100 does not contain polarization resistors.
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 ...