Hubner AMP 41, Operating And Assembly Instructions Manual

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48 AMP(H)41_MANUAL-en_R11 - 2019-03-28
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6.7.1.4 F_Block_ID
This parameter specifies whether a CRC should also be formed using the device-specific
safety parameters "F_iPar". As the measuring system supports device-specific safety parame-
ters such as e.g. "Integration time Safe", this parameter is preconfigured with the value "1 =
generate F_iPar_CRC" and cannot be changed.
6.7.1.5 F_Par_Version
The parameter identifies the PROFIsafe version "V2-Mode" implemented in the measuring
system. This value is predefined and cannot be changed.
6.7.1.6 F_Source_Add / F_Dest_Add
The parameter
F_Source_Add
defines a unique source address within a PROFIsafe cluster.
The parameter
F_Dest_Add
defines a unique destination address within a PROFIsafe cluster.
The device-specific part of the F-Devices compares the value with the in-situ address switch or
an assigned F-Address, to check the authenticity of the connection.
The PROFIsafe destination address must correspond to the PROFIBUS address
+ 500, set by the address switches implemented in the measuring system, also see chapter
5.5 “Bus addressing” on page 30.
Standard value
F_Source_Add
= 1, Standard value
F_Dest_Add
= 503,
F_Source_Add
≠
F_Dest_Add
.
6.7.1.7 F_WD_Time
This parameter defines the monitoring time [ms] in the measuring system. A valid current
safety telegram must arrive from the F-Host within this time, otherwise the measuring system
will be set to safe status.
The predefined value is 125 ms.
The watchdog time must generally be set at a level where telegram runtimes are tolerated by
the communication, but it must also allow quick execution of the error reaction function in case
of error.
6.7.1.8 F_iPar_CRC
This parameter represents the checksum value (CRC3), which is calculated from all
iParameters of the device-specific part of the measuring system and ensures safe transmission
of the iParameters. The calculation occurs in a program called "JHG_iParameter" provided by
Johannes Hübner Giessen. The checksum value calculated there must then be manually
entered in the F-Host engineering tool, also see chapter 7 “Parameter Definition/CRC
Calculation“ on page 51.
The measuring system also generates a checksum itself from the iParameters transferred by
the F-Host. This checksum is compared with the checksum transferred by the F-Host in the
measuring system. If both
F_iPar_CRC
are identical, the measuring system is put into data
exchange mode at start-up, otherwise it does not start up.
To calculate the
F_iPar_CRC
, the 32-bit CRC polynomial 0x04C11DB7 is used in both the
measuring system and in the
JHG_iParameter
program.
Standard value = 1132081116, valid for all iParameters with default setting.