9 Application Instructions API 150-199 4. When applying GPS instruction, COM1 has to be applied in Master mode, i.e. M1312 has to be enabled to sending request. In addition, M1314 = ON indicates receiving completed. M1315 = ON indicates receiving error. 5. Associated M flags and special D registers: (D1250 = K1, receiving time-out; D1250 = K2, checksum error) 6. Before applying the received GPS data, please check the value in D +9. If D +9 = 0, the GPS data is invalid. 7. If data receiving error occurs, the previous data in D registers will not be cleared, i.e. the previous received data remains intact. Program example: Sentence identifier: $GPGGA 1.
Set COM1 communication protocol first M1002 Set communication protocol as 9600,8,N,1 Retain communication setting Set receiving time-out as 2s DVP-PLC Application Manual 9-91 No. Content Range Format Note D + 8 East / West 0 or 1 Word 0(+)East, 1(-)West D + 9 GPS data valid / invalid 0, 1, 2 Word 0 = invalid D + 10 Day 1 ~ 31 Word D + 11 Month 1 ~ 12 Word D + 12 Year 2000 ~ Word D + 13~14 Latitude -90 ~ 90 Float Unit: ±dd.ddddd D + 15~16 Longitude -180 ~ 180 Float Unit: ±ddd.ddddd No.
Function M1312 COM1 (RS-232) sending request M1313 COM1 (RS-232) ready for data receiving M1314 COM1 (RS-232) data receiving completed M1315 COM1 (RS-232) data receiving error M1138 Retaining communication setting of COM1 D1036 COM1 (RS-232) Communication protocol D1249 COM1 (RS-232) data receiving time-out setting. (Suggested value: >1s) D1250 COM1 (RS-232) communication error code MOV H81 D1036 SET M1138 MOV K2000 D1249