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Reactive Power Controller
= Key 1 = Key 2 = Key 3
Modbus RTU
Transmission mode
RTU-Mode with CRC-Check
Transmission parameters
Baud rate : 9.6, 19.2, 38.4, 57.6, 115.2kbps
Data bits : 8
Parity : none
Stop bits : 2
Realised functions
Read Holding Register, Function 03
Preset Single Register, Function 06
Preset Multiple Register, Function 16
Data formats
char : 1 Byte (0 .. 255)
word : 2 Byte (-32768 .. +32767)
long : 4 Byte (-2 147 483 648 .. +2 147 483 647)
The sequence of bytes is highbyte before lowbyte.
Profibus DP V0
The
Prophi
is a slave device and corresponds to the
fieldbus directive PROFIBUS DP V0, DIN E 19245 part
3. The PROFIBUS user organization has listed
Prophi
with the following entries:
Device description : Prophi
Ident-Number : 04B9 HEX
GSD : PROF04B9.GSD
The GSD file is specific for the device. Here the trans-
mission parameters and the kind of measured data are
determined. The GSD file for
Prophi
with option "In-
terface" belongs to the contents of delivery.
While creating the program for the PLC (master), the
GSD file is implemented into PLC program.
Baud rate
The setting of the baud
rate is valid for Modbus
RTU only.
For Profibus DP V0 protocol the set baud rate is not
used, but will be determined by the master (e.g. PLC)
and transmitted to
Prophi
.
Example: Select baud rate.
Please move to device
address in expanded
programming using key
3.
Now go to baud rate
using key 2.
Confirm with key 1.
In this example, the baudrate 4= 115.2kbps is indicated,
the number is flashing.
Select baud rate with key 3 (0, 1, 2, 3 or 4).
Confirming key 1 for about 2 seconds, the changes are
saved and
Prophi
keeps working in automatic mode.
Number Baud rate for Modbus RTU
09.6kbps
119.2kbps
238.4kbps
357.6kbps
4115.2kbps
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