SERTEL T-GPS-300, Руководство по эксплуатации

Страница: 76 / 132

70
Output 3, current-loop (optional) : 20 mA current-loop output (passive). Voltage to be applied
: 12 - 40 VDC. Minimal voltage at 20 mA : 9 V. 1=20mA, 0=4mA.). Same signals as output 1.
Output 4, RS-232/RS-485 : output of time information in RS-232 ASCII format, 1200 Baud. 5
formats selectable by menu.
Options : - 5 meter cable with RS-232 sub-D 9-pin connector.
- RS-485 instead of RS-232.
Pin allocation :
ƒ
GND
ƒ
RS-232 output
ƒ
RS-485 output (option)
ƒ
RS-485 output (option)
ƒ
Vdd (+5V)
Time message formats :
Legend : HH=hours; MM=minutes; SS=seconds; MIS=milliseconds; DD=day of month; d=day
of week (Monday=1); DOY=day of year; mm=month; YY=year; s=status byte.
1. <STX>HH:MM DD.mm.YY0<ETX><BCC>
Byte format : 1 start-bit, 7 data-bits, 1 parity-bit (even), 1 stop-bit.
Repetition rate : 1 message every minute, beginning exactly on the minute.
BCC : XOR over all bytes from H to ETX (even parity).
2. HH:MM:SS.MIS DD/mm/YY DOY d s<CRLF>
Byte format : 1 start-bit, 8 data-bits, 1 stop-bit, no parity.
Repetition rate : 1 message every minute, beginning exactly on the minutes.
Status byte : normally=30H; leap year=31H; bad GPS synchronization=34H; leap year
and bad GPS synchronisation=35H.
3. <STX>SSMMHHDDmmYYs<ETX>
Attention : the order of the tens and units is inverted. The units come first, then the tens.
Byte format : 8 data-bits, 1 stop-bit, no parity. Repetition rate : 1 message every minute,
beginning on the minute.
Status byte : bad GPS synchronization and winter time=31H; bad GPS synchronisation
and summer time=33H; Good GPS synchronisation and winter time=35H; Good GPS
synchronisation and summer time=37H.