GE VersaMax PLC

11.8.3 SVCREQ 7 Parameter Block Content: Packed
ASCII Format
In Packed ASCII format, each digit of the time and date items is an ASCII formatted byte.
Spaces and colons are embedded into the data to format it for printing or display. ASCII
format requires 12 words in the parameter block (13 words for 4-digit year).
11.8.3.1 2-Digit Year
Parameter Block Format:
Example:
High Byte Low Byte
Read Date and Time in Packed ASCII
Format (Mon, Oct. 5, 1998 at 11:13:00pm)
1 = change or 0 = read
address
0 (read)
3 (ASCII format)
address + 1
3 (ASCII format)
year year
address + 2
38 (8) 39 (9)
month
(space)
address + 3
31 (1) 20 (space)
(space)
month address + 4
20 (space) 30 (0)
day of month day of month
address + 5
35 (5) 30 (leading 0)
hours
(space)
address + 6
31 (1) 20 (space)
:
hours address + 7
3A ( : ) 31 (1)
minutes minutes address + 8
33 (3) 31 (1)
seconds
:
address + 9
30 (0) 3A ( : )
(space)
seconds address + 10
20 (space) 30 (0)
day of week day of week
address + 11
32 (2: Mon.) 30 (leading 0)
The Service Request Function GFK-1503E User Manual 207
For public disclosure