Elgas EDT 101, Руководство пользователя

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4.3.3 Service Configuration Section
Parameters in the Service configuration section allows to adjust the offset and span of the
transducer. The default parameters are entered during calibration procedure and can be
changed only by an authorized person using Service password.
Offset trim is an additive constant which defines the shift of the transducer characteristics
relative to the factory calibration data. When the transducer is factory calibrated, the Offset
trim is set to 0.0000. During the field calibration the value can be changed to compensate for
possible characteristics deviation.
Span trim is a multiplicative constant which defines the change of the slope of the transducer
characteristics relative to the factory calibration data. When the transducer is factory
calibrated, the Span trim is set to 1.0000. During the field calibration the value can be changed
to compensate for possible characteristics deviation.
4.3.4 User configuration section
User configuration section contains parameters used for Modbus network setup. The section is
protected by the User password to prevent accidental change of settings.
Modbus slave address contains address to which the transducer responds. When entering a
new address, this is valid immediately after writing to this register.
Group assignment register defines group(s) the transducer belongs to. Transducers belonging
to the same group can be forced to start measurement simultaneously by a single Start
measurement with mask command transmitted as broadcast as described in paragraph 4.5.4.
Default operation mode specifies whether the transducer after power-up or reset starts the
continuous temperature measurement or not. When changing this register, Write EEPROM
command must be issued to store the change in the EEPROM memory.
Code Default operation mode
00h standby
01h continuous measurement
4.3.5 Miscellaneous
This section contains registers used for password manipulation. The password protects write
access to the configuration sections.
Password. After writing correct value to the password registers, desired section can be
unlocked for writing by Unlock section function (see paragraphs Chyba! Nenalezen zdroj
odkazů. a Chyba! Nenalezen zdroj odkazů. ).
4.3.6 Measured variables
In this section, measured and calculated variables are stored. All variables are updated at the
end of each single temperature measurement.