Omron V022-E3-1 operation manual Section, Restrictions on allocating words

'￿￿￿￿4￿￿￿￿￿￿-￿￿￿￿￿￿4￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿ Section 5-3

Word m+1

m+2

[“Content upgrade memory table” in the PT status notify area and PT status]

15 14	13 12		11	10	9	8	7	6	5	4	3	2	1	0	Bit
	0		Numerl memory table # (BCD, 3 digits)												Content upgrade memory table
		PT status							0				0		PT status

15 14 13 12 11 10 9 8 Bit

-- 0 -- -- 0 0 0 PT status

Numeral setting strobe flag

Numeral memory table #: 000 to 511

Data is written to the content upgrade memory table as three digits of BCD (binary coded decimal) data.

When the numeral setting strobe flag bit has been notified to the PC it returns to the OFF (0) status.

For details on the method for storing a number in the word allocated for the numer- ￿al table, see “Allocation Words and Display of the Memory Tables” (page 167).

Restrictions on allocating words

The PT status notify area can be allocated to the PC memory areas listed in the following table.

Symbol	C Series PCs	Allocated	CVM1/CV Series PCs	Allocated
DM	Data memory	✓	Data memory	✓
CH	Internal/Special Relay	✓	Internal/Special Relay	✓
TIM	Timer		Timer
CNT	Counter	￿	Counter
HR	Holding Relay	✓	--
AR	Auxiliary Relay	✓	Auxiliary Relay	￿
LR	Link Relay	✓	--
			✓ : OK ￿: NG

Reference Since all the CVM1/CV-series special auxiliary relays are allocated to the system, they cannot be used for applications not related to the system.

The range of each memory area differs according to the PC type. See “Appendix L PC Memory Map” (page 291) for more details.

Procedure 1. Use the support tool to allocate the PT status notify area (PT → PC) to the PC memory.

2.Using the support tool, create a numeral setting screen and allocate the nu- meral memory table to the PC memory.

3.Create a PC program for reading the “content upgrade memory table” in the PT status notify area when the numeral setting strobe flag in the PT status notify area comes ON (1).

4.Read the allocated word for the numeral memory table number read in step 3.

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