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GE
Sensing
Foundation Fieldbus Communications for the XMT868
Network Connection and
Factory Reset
Figure 1: Model XMT868 Rear View - Network Connection and Factory Reset
Fieldbus network connections are made at J8, pins 1 and 2 (see Figure 1
below). Optionally, a shield can be connected to J8 pin 3, depending on
the network wiring.
No connections are made to J9 under normal operation. If it is desired to
reset the network board to factory defaults:
1. Connect a jumper between J9 pin 2 and J9 pin 3.
2. Power cycle the instrument.
3. Ten seconds after the power has been restored to the unit, remove the
jumper to return the network board to normal operation.
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913-326A
November 2005
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Summary of Contents for GE XMT868
- Page 1 3. Ten seconds after the power has been restored to the unit, remove the jumper to return the network board to normal operation. • • • • • • Figure 1: Model XMT868 Rear View - Network Connection and Factory Reset...
- Page 2 Tot Digits value selected in the XMT flow meter setup. VOL_U, TOT_U, POWER_U and ENERGY_U are determined by the units chosen for these measurements in the setup for the XMT868 flow meter. See the instrument User's Manual for the setup of these parameters. 913-326A...
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Page 3: Configuration Utility Setup
The following is an example setup using National Instruments Configuration Utility v3.1. Setup Figure 2 below shows the Configuration Utility with an XMT868 flow meter on the network (GE Flow-XMT). Figure 2: Configuration Utility Setup Example Note: The following procedures assume that the device has been placed in the OOS (out-of-service) mode before executing. - Page 4 4. After the desired measurements have been selected for the PRIMARY and SECONDARY SELECTOR, choose the unit system (UNIT_SELECTOR Measurements (cont.) above the PRIMARY_SELECTOR) that has been programmed in the XMT868 (English or SI). Figure 3: Primary Selector Drop Down List 913-326A 4 of 7...
- Page 5 2. Select the Scaling tab and set the unit for the measurement based on the XMT868 flow meter settings. For example, if the XMT868 was set to use the metric unit system and the PRIMARY_SELECTOR was set to use VELOCITY you would choose m/s for the unit as shown in Figure 4 below.
- Page 6 November 2005 Resetting Instrument To reset the instrument totalizers: Totalizers 1. Double click on the FLOW transducer block (in the tree under GEFlow- XMT; see Figure 2 on page 3). 2. Select the Others tab and scroll down to the CLEAR_TOTALIZERS listing.
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Page 7: Function Block Application
We have connected the AI_1 OUT of the XMT868 to the CAS IN of the AO block. We have also connected the AI_2 OUT of the XMT868 to the CAS IN of the PID block.
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