Datum bc635VME, Operation And Technical Manual

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4.1.12 PACKET 'M' LOCAL TIME OFFSET SELECT
byte 1
byte 2
byte 3
byte 4
byte 5
byte 6
byte 7
byte 8
byte 9
byte 10
byte 11
byte 12
byte 13
byte 14
This packet allows time to be displayed with an hour offset. This situation usually arises when the
source of time is in a UTC (Universal Time Coordinated) format and the local time is desired to be
displayed. The offset only applies to the hours digits. The format is as follows.
byte 1 S O H
byte 2 f m ,
byte 3 s i g n ' + ' or '-'
byte 4 h o u r s tens
byte 5 h o u r s units
ETB
The hours are in range from -12 to +12. A positive sign is from the prime meridian heading East,
and a negative sign is used from the prime meridian heading West. For example, Eastern Standard
Time would be -05 relative to UTC.
4.1.13 PACKET '0' REQUEST DATA FROM THE TFP
This packet is used to request data from the TFP which is not available via the register interfaces.
It was added a 'catch all' packet for universal data transfer. This packet has been created with a very
extensible format, and additional data will be made available as customer needs and suggestions are
addressed. Currently three different data packets may be requested using the '0' packet. The formats
are as follows:
REQUEST FORMAT
byte 1 S O H
byte 2 ' 0 '
byte 3 ' 0 ' or '1' or '2' ...
byte 4 E T B
RESPONSE FORMAT '0' REQUEST RTC TIME (SEE PACKET 'L)
SOH
'o' ( l o w e r case letter)
'0'
years tens
years units
months tens
months units
day of month tens
day of month units
hours tens
hours units
minutes tens
minutes units
seconds tens
4-8 bc635VME/bc350VXI Manual D a t u m Inc., Bancomm Div.