COMMISSIONING / OPERATION
4
11
H250 M40 ESK4
www.krohne.com
03/2014 - 4002251801 - AD H250/M40 PROFIBUS R01 en
Hardware write protection:
•
If hardware write protection is enabled acyclic write access via PROFIBUS is refused to all
parameters. Only index parameters remain writeable which are required to specify an entry
within a table which shall be read. In addition the FI_Index remains writeable to read I&M
data via the Call service.
•
Hardware write protection is ignored if a password is entered to enable write access to
service and/or production parameters. This will provide a comfortable write access to
parameters without modifying user settings.
•
Controlling the totalizers via cyclic services (i.e. via data exchange) remains possible even if
hardware write protection is enabled. The corresponding parameters might be modified via
these services.
•
Changing the station address via Set_Slave_Add service remains available even if hardware
write protection is enabled.
•
Automatic Ident. Number adaptation via Set_Slave_Add service or SetPrm service remains
available even if hardware write protection is enabled.
•
Selection of classic/condensed status via Set_Prm service remains available even if
hardware write protection is enabled. The corresponding parameter(s) might be modified via
this service.
Station address
•
If the hardware switch provides a valid station address (<=125) this address is used by the
device. The Set_Slave_Add service is ignored. Automatic Ident. Number adaptation is not
possible via Set_Slave_Add service in this case. Physical block parameter FACTORY_RESET
code 2712 (reset station address to its default value) is rejected.
•
If the hardware switch provides an invalid address (>125) the switch is ignored by the device.
The Set_Slave_Add service is accepted. Physical block parameter FACTORY_RESET code
2712 (reset station address to its default value) is accepted even if No_add_Cfg flag is set.
•
If the hardware switch is shifted from an invalid address to a valid address the device takes
over the selected hardware address. The flag No_Add_Chg will be set. Its former setting is
ignored.
•
If the hardware switch is shifted from a valid address to an invalid address the device takes
over the default address 126. The flag No_Add_Chg will be cleared.
•
The station address can be modified via the hardware switch even if the device is write
protected (via hardware write protection and/or password protection).
4.2 GSD files
The GSD file contains information that will be needed for configuration of the PROFIBUS DP
communication network. Supplementary files (e.g. ___.bmp and ___.dib) contain icons which will
represent the PROFIBUS devices in the view of the bus configuration system/master system. The
files must be loaded into the configuration program before. Follow the instructions in the
manual of the host supplier when installing GSD file and supplementary files.
The GSD files of all KROHNE devices with PROFIBUS PA interface are available at the KROHNE
internet site for download.
INFORMATION!
If it is supported by the host configuration tool the device entry for the ESK4-PA transmitter will
be located within the slave family
“
PROFIBUS PA
”
.
AD_H250_M40_PB_PA_R01_en_4002251801_PRT.book Page 11 Friday, March 21, 2014 1:14 PM
