GE Reason RT430 - Appendix D - SERIAL DATAGRAMS

RT430
RT430-TM-EN-5
93
APPENDIX D – SERIAL DATAGRAMS
RT430 can be configured to send datagrams through serial ports. The datagrams defined for the unit are
ACEB, NEMEA GPZDA, and Meinberg.
ACEB Datagrams
ACEB datagram comprises 13 bytes, sent once per minute in second 02. The datagram information is
described below.
TABLE C.1: ACEB Datagram Synchronism Information
Byte
Description
Possible values
1
Delimiter
0xFF
2
Header
0x01
3
Status
0x00 (locked) or 0x01 (not locked)
4
Start of transmission
0x02
5
Day of week
BCD 01 (Monday) ... BCD 07 (Sunday)
6
Year
BCD 00 ... 99
7
Month
BCD 01 ... 12
8
Day of month
BCD 01 ... 31
9
Hour
BCD 00 ... 23
10
Minute
BCD 00 ... 59
11
Second
BCD 02
12
End of transmission
0x03
13
Synchro byte
0x16
NEMEA GPZDA Datagram
NEMEA ACEB datagram comprises 32 characters, sent once per second. The datagram information is
described below: