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Drivers Manual

Honeywell PLC (Dredge Status) - 36

Description

Driver for decoding a Honeywell PLC Output string.
This is a format which can be expected on dredging hopper vessels, using a Honeywell PLC.

The ASCII data string contains, among other things, a tide value, draft sensor values, depth sensor values and a geographical position.

Besides decoding these observation types, the driver is capable of calculating a pitch angle for the underwater pipe object, using the values of the two depth sensors.
Of course, these sensors should be mounted on the pipe object.

Driver Information

Driver Honeywell PLC Interface Type   Driver Class Type Terminated 
UTC Driver (question) No Input / Output Input  Executable DrvQPSTerminated.exe HONEYWELL_PLC
Related Systems
Related Pages  



Database Setup

  • In order to decode the tide value, add a Tide Gauge system to your template setup, and select driver "Honeywell PLC (Tide)". 

    On the 2nd page, add a (virtual) tide station, and leave the observation parameters of the last wizard page to the default ones.
    The driver will automatically convert the 'tide+100cm' value to survey units.
  • In order to decode the forward and aft draft, add an Underwater Sensor system to your setup, and select driver "Honeywell PLC (Draft/Depth)". 

    On the 2nd page, add two observations of type 'Draft', select the corresponding node, and set the correct Slot, using one of the values from the table below.
    It is important to enter the Slot Id's using capitals. 

     

    Leave the observation parameters on the last wizard page at their defaults.
    The driver will automatically convert the 'draft pressure' to survey units.
  • In order to decode the draghead and gymbal depth sensor values, add an Underwater Sensor system to your setup, and select driver "Honeywell PLC (Draft/Depth)". 

    On the 2nd page, add two observations of type 'ROV Depth', select the corresponding node, and set the correct Slot, using one of the values from the table below.
    It is important to enter the Slot Id's using capitals. 

     

    Leave the observation parameters on the last wizard page to the defaults. The driver will automatically convert the 'depth+100cm' to survey units.
  • In order to get the calculated pitch from the two depth sensors, add a Pitch, Roll and Heave Sensor system to your setup, and select driver "Honeywell PLC (Pitch)". 

    Important: On the 2nd wizard page you must use the Slot number field to fill in the distance between the two depth sensors on the pipe object in cm's. 

    Leave the other Motion Parameters to defaults, except for the Pitch convention. This should be set to 'Positive bow down' (but it may depends on how the suction pipe object is defined).
    Notice that when the pipe is laying horizontal in the water (i.e. both depth sensors have the same value), the pitch value will be zero.
    When the pipe hangs all the way down, the pitch will be 90°.
    So under normal working conditions, the driver will calculate a positive pitch value between 0 and 90°.
  • In order to decode the position, add a Position Navigation system to your setup, and select driver "Honeywell PLC (Lat/Lon)".
    Notice that no height value will be decoded.
  • In order to decode the dredge status field, add a Dredging Sensor system to your setup, and select driver "Honeywell PLC (Dredge Status)". 

    Add an observation of type 'Status'. Leave the observation parameters to the defaults. 

    Further, when a Dredging System has been added to the template setup, you may now select on the 2nd wizard page the newly added Status observation.
    Set up the Dredging Status Translation as follows: 

  • Additionally, in order to decode the wire payout and wire vertical angle values (as generic observations), add a Miscellaneous system to your setup, and select driver "Honeywell PLC (Wire Payout/Wire Angle)". 

    On the 2nd page, add four generic observations, select a corresponding name, and set the correct Slot Id, using one of the values from the table below.
    It is important to enter the Slot Id's using capitals. 

     

    Leave the other parameters to their defaults.
    The driver will automatically convert the values from the string to survey units and degrees.

SLOT ID TABLE

System

Observation

Description

Slot Id

Underwater Sensor system

Draft

FWD

Underwater Sensor system

Draft

AFT

Underwater Sensor system

Draft

MEAN

Underwater Sensor system

ROV Depth

GYMBAL

Underwater Sensor system

ROV Depth

DRAGHEAD

Pitch, Roll and Heave Sensor

Pitch

Calculated pitch for the underwater suction pipe object, containing two mounted depth sensors

<distance in cm>
For example, enter "853" when distance between the two depth sensor on the pipe is 8.53 m

Miscellaneous

Generic

Draghead wire payout

DDDD

Miscellaneous

Generic

Gymbal wire payout

EEEE

Miscellaneous

Generic

Draghead wire encoder vertical angle

HHHH

Miscellaneous

Generic

Gymbal wire encoder vertical angle

IIII

The I/O Interface parameters must be the same as for all above defined systems.

Drivers IO Notes

Command line parameter description for "drivers.io" file. Please do not edit this drivers.io file, or only after contacting the QPS Support department.

Cmdline 'HONEYWELL_PLC' tells the driver to expect data from the Honeywell PLC unit.

Cmdline 'NOCS' tells the driver to ignore the checksum of the message.