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GPS16X-HVS GPS Receiver

Note: nothing is actually transmitted

Number of consecutive input locations to send

Termination character, 42 is ASCII equivalent of the

asterisk

100

Maximum number of characters to receive.

Delay in mS. How long to wait for $GPGGA string

Starting input location for time and position data

Multiplier, always 1.

Offset, always 0.

P15 parameters 4, 5, and 10 are somewhat variable. When using a CR23X,

parameter 4 can be set to 05, 06 or 07 depending on what control ports are

used. Wiring of the communication cable depends on the selection for

parameter 4. With a CR23X the GPS transmit wire is connected to the control

port selected in parameter 4.

P15 is executed when the PPS signal drives control port 8 high. P15 will wait

until one of three conditions is met: the time-out listed in parameter 9 has

expired, the maximum number of characters in parameter 8 have been read, or

the termination character listed in parameter 7 has been read.

P15 parameter 10 is the first input location you wish to store GPS data in.

Fifteen sequential input locations will be used to store time and position.

Example A-1. Program Instruction 15 (P15) for CR23X

Port Serial I/O (P15)

1: 1 Reps

2: 62 -- ASCII/RS-232, 4800 Baud, decimal delimiter

3: 1 Delay (units = 0.01 sec)

4: 5 Control Ports

5: 1 Output Loc [ Bulk ]

6: 0 No. of Locs to Send

7: 42 Termination Character

8: 100 Maximum Characters

9: 80 Time Out Delay (units = 0.01 sec)

10: 1 Loc [ Raw_time1 ]

11: 1 Mult

12: 0 Offset

Communication cable wiring for:

CR23X/Example A-1 — PPS to C8, GPS transmit to C5.

A.1.3 Filters

Filters can be used to make sure P15 reads the correct data string. Filters also

ensure P15 starts to read the string at the beginning of the string. To use a

filter, follow P15 with instruction P63 (extended parameters). P63 is used to

define the filter. Enter the desired filter in P63.

NOTE

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 29 30

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