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Reference
Section 5-3
[“Content upgrade memory table” in the PT status notify area and PT status]
00
1514131211109876543210Bit
-- 0 -- -- 0 0 0
Word
m+1
15 14 13 12 11 10 9 8 Bit
PT status
Numeral memory table #: 000 to 511
m+2
Numeral setting strobe flag
PT status
Content upgrade memory table
0 Numerl memory table # (BCD, 3 digits)
PT status
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 thePC it returns tothe
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 CSeriesPCs 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
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.