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					                                    Garmin GPS/35
                      Global Positioning System (GPS) OPTION

PURPOSE

This document will explain the two boards that can be used in the 555A/B/C Data Acquisition
System to communicate to a Global Positioning System (GPS) option. The boards used are:
     1. Multi Comm board – Has four (4) jumper selectable ports, which are capable of four
          (4) RS232 ports
     2. Single RS232 board - Provides one (1) RS232 port

The document will also provide instructions and programming to maintain full charge of the GPS
internal battery.

SCOPE

This document provides the wiring configuration and programming requirements when using the
Multi Comm or the Single Serial RS232 board to communicate with the GPS. The information
will cover the GPS.555A, 555B, 555C and 555C-1 data acquisition systems in the following
order:

     GPS information
         Internal Battery

     Wiring Configuration
          Multi – Comm Board
          Single Serial Board

     Sample Program
         GPS used with GOES Transmitter
         GPS used without GOES Transmitter

GPS INTERNAL BATTERY

The GPS has been tested, the baud rate set to 2400 baud and the internal battery has been fully
charged when shipped from the factory. A fully charged battery will last for 6 months. If the
GPS has not been deployed within the first month, the battery will require a full charge prior to
deployment. The internal battery will require 48 hours to fully charge. The following is the
procedure to charge the internal battery of the GPS:
       1. Connect a 12 volts dc battery to the (+) and (-) leads of the GPS:
               a. GPS with wires
                       Red wire to battery (+)
                       Black wire to battery (-)
               b. GPS with connector
                       Pin C to battery (+)
                       Pin D to battery (-)
After 48 hours of battery charge, perform the following using a computer to ensure the GPS is
functioning and to reset the ram in the GPS. Use PRO-COMM plus perform this function. The
wiring of the GPS to the computer is:

       1. GPS to DB9 connector

               GPS                            DB9

               White wire or                  pin 2
               Pin B of connector

               Blue wire or                   pin 3
               Pin A or connector

               Black wire or Pin D            pin 5

               Red wire or Pin C              Power supply - +12 volts
               Black wire or Pin D            Power supply - Ground

       2. Terminal program set up
             a. Set Baud rate for 2400,N,8,1
             b. Press ALT m for meta keys and set as follows:

                      TYPE            CONTENTS                        COMMENTS

       ALT –1         Text            $PGRMO,,2^M^J                   Disables all Outputs
       ALT-2          Text            $PGRMO,GPGGA,1^M^J              Enables all Outputs
       ALT-3          Text            $PGRMO,GPGGA,0^M^J              Disable Specified line
       ALT-4          Text            $PGRMC,,,,,,,,,,2^M^J           Changes baud rate to 2400

                                               10 commas

       ALT-5          Text            $PGRMI,,,,,,,C^M^J              Clears Ram

                                              7 commas

               c. Press S to save the meta key entries and press Esc to return to main screen.
               d. Main Screen:
                      Press ALT-1
                      Press ALT-2
                              a. Readable data should be displaying on screen continuously, if
                                 data is good, go to next step (e). If data is garbled go to step (f).
               e. Press ALT-4
                      Note that the data value will display 0’s when ALT-4 is pressed
                      GPS programming is complete
               f. Press ALT –3 , to change baud rate to 2400
                      After pressing ALT-3 cycle power on the GPS
                      Press ALT-1
                      Press ALT-2
                          a. Readable data should be displaying on screen continuously
                      Press ALT-4
                          a. Note that the data value will display 0’s when ALT-4 is
                              pressed
                          b. GPS programming is complete



MULTI COMM BOARD

   555B External Wiring

   It is recommended that the connector modification to support the GPS be performed at the
   factory. The Multi Comm board default settings set comm port 0,1, and 2 for RS232 and
   Com port 3 for 485/422. A 6-pin connector, as shown in the figure, is required to connect
   the GPS to the 555B. Wire the connector as follows:

   Signal                 External Connector           Scrambler Board
     Tx                          Pin A                      J8 – 1
     Rx                          Pin B                      J8 – 2
     Switch 1-(+12Vdc)           Pin C                     W1 – 34
     Ground                      Pin D,E                   System Ground



                                                                                         Tx-Rx Transmit
                                                                                           Connector
555A External Wiring

In this procedure the Multi Comm board is being wired to support the RS232 Port 2.
External wiring from the GPS is as follows:

      GPS Wire                    555 Terminal Input

      White                       TB Pin – Rx2
      Blue                        TB Pin – Tx2
      Red                         TB Pin – SW1
      Black                       TB Pin – Ground


555C External Wiring

In this procedure the Multi Comm board is being wired to support the RS232 Port 2.
External wiring from the GPS is as follows:

      GPS Wire                    555 Digital I/O Connector

      White                       Pin – 32 - Rx2
      Blue                        Pin – 37 - Tx2

      GPS Wire                    555 STD #1 Connector

      Red                         Pin – 25 - SW1
      Black                       Pin – 23 - Ground
SINGLE SERIAL INTERFACE BOARD

The Single Serial Interface board provides one RS-232 device and will be connected inside the
555 data acquisition system. The single serial interface board can be used in any of the 555
systems.

       555B Installation

       The single serial interface board is provided with two (2) ribbon cables. The single serial
       interface board connectors are labeled on trace side of the board, ‘External’ and ‘CPU’.
       Install the single serial interface board, as shown in the next figure:
                1. External side – J1 of connected to the scrambler board.
                2. CPU side – connect to J1 of the CPU data acquisition board.




                                                                                        Brown Wire




       External Wiring

       A 6-pin connector, as shown in the figure, is required to connect the GPS to the 555B.
       The external connector is wiring to two 80-pin connectors. The wiring is as follows:

       Signal                External Connector             Scrambler Board

        Tx                   Pin A                          J8 – 1
        Rx                   Pin B                          J8 – 2
        SW1(+12Vdc)          Pin C                          W1 – 34
        Ground               Pin D,E
                                                                                     Tx-Rx Transmit
                                                                                       Connector




55A/C/C-1 Installation

The single serial interface board is provided with two (2) 80-pin ribbon cables. The single
serial interface board is labeled on each end of the board, ‘External’ on one side and
‘CPU’ on the other. The ribbon cable between J1 of the CPU and the external connector
board will be replaced by the serial interface board assembly.

Install the single interface board, with the brown wire of the ribbon cables on the right
side, in the following manner, shown in the next figure:
             1. Disconnect the ribbon cable that is connected to J1 of the CPU and the
                 terminal strip back plain, of the 555A, or from the circuit board, of the
                 555C.
             2. Connect the ‘External side’ to J1 of the terminal stripe (555A) or to the
                 circuit board of the Digital I/O connector (555C).
            3. Connect the ‘CPU side’ to J1 of the CPU data acquisition board




                                                                        Brown Wire
555A External Wiring

         Wiring:
                Wire           Terminal

                White              Rx2
                Blue               Tx2
                Red                SW1
                Black              Ground

555C External Wiring

         Wiring; wires have male pins:

                Wire           Digital I/O Connector

                 White             Pin – 32 – Rx2
                 Blue              Pin – 37 – Tx2

                Wire           STD#1 Connector

                  Red              Pin – 25 – SW1
                  Black            Pin – 23 – Gnd

555C-1 External Wiring

Contact Vaisala to have the 555C-1 modified to accommodate the GPS. The modification
will require a external connector and a wiring modification to provide the TX and RX to
the external connector. The wiring to the external connector is as follows:

Signal                   External Connector

 Tx                      Pin A
 Rx                      Pin B
 SW1(+12Vdc)             Pin C
 Ground                  Pin D,E




                                              Tx-Rx Transmit
                                                Connector
       PROGRAMMING

                555A/C/B With GOES Transmitter

                The following is a sample program, using a GOES transmitter in the 555. This sample
                program will test the GPS, which also contains the programming to maintain the GPS
                internal battery at full charge.

                Program

                The following programming screens are in the order required to successfully complete
                the programming.

                Sensor Assignments

                       Battery Volts
                              1. Select ‘Add’
                              2. Select ‘ Misc. Single Ended Analog’
                              3. Select ‘Battery Volts’ and program as shown:




                       Dummy Sensor Assignment
                       The assignment will be used to turn on the Switch (SW1) to apply +12 volts to the
                       GPS for 20 minutes.
                              1. Select ‘Add’
                                                                                                   Set to 2 if using
                              2. Select ‘Misc. Single Ended Analog’                                SW2
                              3. Select ‘ Single Ended Voltage’ and program as shown
Any available
input




 Not
 Applicable
Process Definitions

      GOES Transmitter
           1. Select ‘Add’
           2. Select ‘Handar GOES Transmitter Support’
           3. Select ‘GOES self-timed Data Xmit’ and program as shown:
           4. Select ‘Field Accessible’ Yes
           5. Select ‘ Add a New Entry’
           6. Input the as shown




      RS232 Support
            1. Select ‘Add’
            2. Select ‘Rx2/Tx2 Serial Port Support’
            3. Select ‘RS232 Serial Interface’ and program as shown:
                   Note: Answer ‘Y’ for ‘Using 555-6020’ for both Multi-Comm and
                         Single Serial Interface board applications




      Interval Post to turn on Dummy

      This process will turn on the Switch (SW1) at 12 o’clock noon every day to
      charge the GPS battery.
             1. Select ‘Intermediate Data Processing’
             2. Select ‘ Interval Posted Data’ and program as shown:
Log GPS

          1.   Select ‘Add’
          2.   Select ‘Interval Data Logging’
          3.   Select ‘ Log Multiple Source Data’ and program as shown:
          4.   Select ‘GPS’ for all 7 Data Source Ids selecting 1 –7 for each of the
               GPS fields.
         Sensor Assignments

               GPS
                 1.   Select ‘Add’
                 2.   Select ‘System Function’
                 3.   Select ‘GPS Receiver Interface’
                 4.   Input as shown:
                              a. Sensor ID: GPS
                              b. Input Location: Press ‘Enter’-software will select next
                                                    available location
                              c. Fields: 7 – number of fields in GPS
                              d. Port selection: Select 2 for single serial interface, select port to
                                                 be used for Multi-Comm
                              e. Sw.12v source: select 1 or 2, do not have other sensors on GPS
                                                   sw.12v line
                              f. Scan start time: 00:00:00
                              g. Scan interval: 00-00:30:00
                              h. GPS pwr advance: 00:04:00
                              i. Xmtr timebase: Y
                              j. Select ‘Yes’ for ‘Field Accessible’ for ‘GPS acquisitions’
                              k. Select ‘Add a new Entry’
Select                               1. PARAMETER NAME = Gps_Accs
                                     2. VALUE = 0




                              l. Select ‘Yes’ for ‘Field Accessible’ for Clock error
                              m. Select ‘Clock_Adj and Press ‘Enter
555A/C/B With out GOES Transmitter

      The following is a sample program, not using a GOES transmitter, in the 555. This
      sample program will test the GPS and also contain the programming to maintain the GPS
      internal battery at full charge.

      Program

      The following programming screens are in the order required to successfully complete
      the program.

      Sensor Assignments

             Battery Volts
                    1. Select ‘Add’
                    2. Select ‘ Misc. Single Ended Analog’
                    3. Select ‘Battery Volts’ and program as shown:
         Dummy Sensor Assignment

                      The assignment will be used to turn on the Switch (SW1) to apply +12 volts to the
                      GPS for 20 minutes.
                             1. Select ‘Add’
                             2. Select ‘Misc. Single Ended Analog’
                             3. Select ‘ Single Ended Voltage’ and program as shown


Any available
input


   Not
   Applicable



                Process Definitions

                      RS232 Support
                            1. Select ‘Add’
                            2. Select ‘Rx2/Tx2 Serial Port Support’ from Category List
                            3. Select ‘RS232 Serial Interface’ and program as shown:
                                   Note: Answer ‘Y’ for ‘Using 555-6020’ for both Multi-Comm and
                                         Single Serial Interface board applications




                      Interval Post to turn on Dummy

                      This process will turn on the Switch (SW1) at 12 o’clock noon every day to
                      charge the GPS battery.
                             1. Select ‘Intermediate Data Processing’
                             2. Select ‘ Interval Posted Data’ and program as shown:
Set Clock Error

      1. Select ‘Add’
      2. Select ‘ System / General Processes’
      3. Select ‘ Time Clock Field Adjustment’




Log GPS
      1.   Select ‘Add’
      2.   Select ‘Interval Data Logging’
      3.   Select ‘ Log Multiple Source Data’ and program as shown:
      4.   Select ‘GPS’ for all 7 Data Source Ids selecting 1 –7 for each of the
           GPS fields.
         Sensor Assignments

               GPS
                 1.   Select ‘Add’
                 2.   Select ‘System Function’
                 3.   Select ‘GPS Receiver Interface’
                 4.   Input as shown:
                              a. Sensor ID: GPS
                              b. Input Location: Press ‘Enter’-software will select next
                                                  available location
                              c. Fields: 7 – number of fields in GPS
                              d. Port selection: Select 2 for single serial interface, select port to
                                                 be used for Multi-Comm
                              e. Sw, 12v source: select 1 or 2, do not have other sensors on
                                                   GPS sw.12v line
                              f. Scan start time: 00:00:00
                              g. Scan interval: 00-00:30:00
                              h. GPS pwr advance: 00:04:00
                              i. Xmtr timebase: N
                              j. Select ‘Yes’ for ‘Field Accessible’ for ‘GPS acquisitions’
                              k. Select ‘Add a new Entry’
                                     1. PARAMETER NAME = Gps_Accs
                                     2. VALUE = 0

Select
                         a.




                      1. Select ‘Yes’ for ‘Field Accessible’ for Clock error
                      2. Select ‘Clock_Adj and Press ‘Enter

				
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posted:9/3/2011
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