Magnetrol E3A Modulevel, Руководство по эксплуатации

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21 48-640 E3 Modulevel ® Displacer Level Transmitter - F
OUNDATION
fieldbus ™
4.3 Modulevel ® Transducer Block
The MODULEVEL TRANSDUCER block is a custom block
containing parameters that support the E3 MODULEVEL
level transmitter. It contains the model attributes, diagnos-
tics, and calibration data, and outputs a measured value
with status information.
The TRANSDUCER block parameters are grouped in a
useful configuration. There are both read-only parameters
and read-write parameters within the TRANSDUCER block.
• The read-only parameters report the block status and
operation modes.
• The read-write parameters affect the function block basic
operation, level transmitter operation, and calibration.
the transducer Block will automatically be changed to
“out of Service” when the local interface (keypad) is used
to change a parameter online.
4.3.1 Modulevel
®
transducer Block Parameters
The first six parameters in the MODULEVEL
TRANSDUCER block are the universal parameters discussed
in section 4.1.1. The universal parameters are followed by
these additional required parameters:
UPDATE_EVT (Update Event): an alert generated by a
write to the static data in the TRANSDUCER block.
Another important parameter found later in the TRANS-
DUCER block list is
DEVICE_STATUS , which displays
the status of the device. If more than one message exists,
then the messages are displayed in priority order. Refer to
Section 8.3.3, Status Messages.
If DEVICE_STATUS indicates a problem, refer to
Section 8.3, Troubleshooting.
For a complete list of transducer Block Parameters, refer
to table in the appendix.
4.3.2 Password Parameters
To change a parameter at the local user interface, a value
matching the user password must be entered (Default=1). If
the user password is entered, the instrument is in the user
mode. After 5 minutes with no keypad activity, the entered
password expires.
Factory password is for use by trained factory personnel only.
From the network, the instrument always behaves as if it is
in the user mode by default. In other words, it is not neces-
sary to enter the user password in order to write parameters
from the network.