GE 90-30/20/Micro manual

4

To Change/Read Date and Time using Packed ASCII with

Embedded Colons Format

In Packed ASCII format, each digit of the time and date items is an ASCII formatted byte. In addition, spaces and colons are embedded into the data to permit it to be transferred unchanged to a printing or display device. This format requires 12 words.

High Byte		Low Byte
1 = change	or	0 = read	address
3			address + 1
year		year	address + 2
month		(space)	address + 3
(space)		month	address + 4
day of month		day of month	address + 5
hours		(space)	address + 6
:		hours	address + 7
minutes		minutes	address + 8
seconds		:	address + 9
(space)		seconds	address + 10
day of week		day of week	address + 11

Example output parameter block:

Read Date and Time in Packed ASCII Format (Mon, Oct. 2, 1989 at 23:13:00)

	0
	3
39		38
31		20
20		30
32		30
32		20
3A		33
33		31
30		3A
20		30
32		30

4-148 Series 90-30/20/Micro Programmable Controllers Reference Manual–September 1998 GFK-0467K