Omron NT620S Operation Manual page 242

Clock Function
Procedure 1. Allocate the two memory tables that are to be the copy source for the setting
Date and Time Setting Example
Numeral memory table No. 252
(2-digit display)
Numeral memory table No. 249
(2-digit display)
to areas in the PC.
Two words must be allocated for each table.
2. Next, at the PC, specify the date and time that are to be set in numeral
memory tables 254 and 255 in these allocated words.
3. Copy the settings from the copy source numeral memory tables to numeral
memory tables 254 and 255.
For the method for copying memory tables, see "Copying the Memory Table"
(page 208).
S Important points concerning the numeral memory tables used for the clock
function
Do not allocate the numeral memory tables to which the clock function is as-
signed (numbers 247 to 255) to PC words.
Numeral memory tables 247 through 253 are exclusively for display (read
only). Do not attempt to write data to them by using numeral settings or by co-
pying between memory tables.
Numeral memory tables 254 and 255 are exclusively for time setting (write
only). Do not use them for numeral displays or graph displays.
Initial values set with the support tool are invalid in the case of numeral memory
tables 247 through 255.
The following is an example of setting the date and time from the PC.
In this example, a C200H (type C200H-CPU11,21,22,23,31) which has a time
function is used. The time function is assigned to words AR 18 to 21 of the
C200H.
S Support tool settings
The following settings are made using the support tool.
PT status control area:
Numeral memory table No. 264: DM0000 (registration word: 2)
Numeral memory table No. 265: DM0002 (registration word: 2)
Data registered on the screen:
Numeral memory table No. 251 (2-digit display)
19 95 4
9 50
Numeral memory table No. 248 (2-digit display)
CH0100
Numeral memory table Nos. 247 to
252
Numeral memory table No. 250
(2-digit display)
20
18
Numeral memory table No. 247
(2-digit display)
Section 5-6
231