Teledyne 2105, Инструкция по установке и эксплуатации, Страница: 49 / 98

2105 Interface Module
Section 2 Installation and Operation
2-31
Enter a name for the parameter, and the number of the device’s
register holding the data. The data format will depend on the
output of the connected device. The units of measure available in
the pull down list are determined by the data type you select.
Select the First Word High check box if the data format contains
a byte ordering that needs to be reversed, once received.
If scaling and/or an offset are required, enter the scaling multiple
for Y (1 for no scaling) and an offset value for X (0 for no offset).
When all of the properties of the measured parameter have been
specified, click Add. All added parameters will appear in the
Associated Properties field on the right. When you are finished
editing the Device Parameters, click OK to save your changes.
Note
All Modbus device inputs must use the same Modbus protocol
and baud rate.
All connected Modbus devices now appear in the upper left
corner of the Modbus tab. The field to the right displays the mea-
sured parameters of any highlighted device.
Each added Modbus data input now appears along with any
other data labels on the Measurements tab, and may be selected
and edited for data storage like any other data type.
Note
All 2100 modules have Modbus output capability. For an over-
view of Modbus principles and an explanation of Modbus out-
put operation as it applies to 2100 modules, turn to
Section 3
Modbus Protocol and 2100 Output .
2.14.1 4200 and 6700 Series
Measured Data
This section is specific to 4200 Series flow meters and 6700
Series samplers. For overall Modbus input instructions, begin by
reading Section 2.14
Modbus Input .
The 2105 module can capture, log, and push data from a 4200
Series flow meter or 6700 Series sampler. The 2105 interfaces
with the instrument through a simulated Modbus connection.
4200/6700 data parameters must be entered as Modbus param-
eters.
Data stored in the 4200/6700 may not exactly match the same
data stored in the 2105 because the 4200/6700 stores the average
of readings per interval, while the 2105 will retrieve only the last
measurement taken for each interval. Because of this difference
in data storage, the 4200/6700 clock should be set slightly ahead
of the 2105 clock in order for the 2105 to capture recently
updated parameters.
The interface will not work unless the flow meter or sampler's
serial output function is activated. By default, 4200 flow meters
and 6700 Series samplers do not have the serial output function
activated.