Samson 3730-6, Mounting And Operating Instructions

Page: 54 / 124

6.1 Serial interface
The positioner must be supplied with at least
3.8 mA.
The positioner can be connected directly to
the PC via the local serial interface and the
serial interface adapter.
The operator software is TROVIS-VIEW 4
with installed device module 3730-6.
6.2 HART
®
communication
The positioner must be supplied with at least
3.6 mA. The FSK modem must be connected
in parallel to the current loop.
A DTM file (Device Type Manager) conform-
ing to the Specification 1.2 is available for
communication. This allows the device, for
example, to be run with the PACTware oper-
ator interface. All the positioner's parame-
ters are then accessible over the DTM and
the operator interface.
For start-up and settings, proceed as de-
scribed in section 7.1 to 7.4. Refer to the
code list in section 14 for the parameters
necessary for the operator interface.
NOTICE
The write access for HART
®
communication
can be disabled over Code 47 . You can
only disable or enable this function locally at
the positioner.
The write access is enabled by default. The
on-site operation including the INIT key can
be locked over HART
®
communication. The
word 'HART' then blinks on the display
when
Code 3
is selected. This locking func-
tion can only be disabled over HART
®
com-
munication. On-site operation is enabled by
default.
Note: In the case, complex functions are
started in the positioner, which require a
long calculation time or lead to a large
quantity of data being stored in the volatile
memory of the positioner, the alert 'busy' is
issued by the DTM file.
This alert is
not an error message
and can
simply be confirmed.
6.3 Dynamic HART
®
variables
The HART ® specification defines four dy-
namic variables consisting of a value and an
engineering unit. These variables can be as-
signed to device parameters as required.
The universal HART ® command 3 reads the
dynamic variables out of the device. This al-
lows manufacturer-specific parameters to
also be transferred using a universal com-
mand.
The dynamic variables of Type 3730-6 can
be assigned as follows in TROVIS-VIEW
[Device settings > Positioner > HART ® com-
munication]:
54
EB 8384-6 EN
Operator controls and readings