Omron NT620S Operation Manual page 236

Alarm Lists
5-5 Alarm Lists
5-5-1 Allocated Bits of Bit Memory Tables
S Program operation
(1) When the character-string setting strobe flag (bit 11211) comes ON (1), the
contents of CH0111 (the word where the content upgrade memory table is
located) are transferred to DM 0106. The number of the character-string
memory table that contains the upgraded data is stored in DM 0106 (in this
case it is 0002 or 0003).
If the character-string memory table is allocated to a PC word, the value in-
put to it can be read easily by referring to the allocated word.
In this case, the contents of character-string memory table No. 2 are stored
in DM 0120 to DM 0129 and the contents of character-string memory table
No. 3 are stored in DM 0130 to DM 0139.
The alarm list function automatically displays and clears alarm messages (con-
tents of character-string memory tables) that correspond to the allocated bits of
memory tables, in accordance with the status of these bits.
S Available allocation bits
The bit memory tables can be allocated to the following PC areas.
Symbol C Series PCs
DM Data memory
CH Internal/Special Relay
TIM Timer
CNT Counter
HR Holding Relay
AR Auxiliary Relay
LR Link Relay
Since the special auxiliary relays of the CV series PCs are allocated to the sys-
tem, they cannot be used for purposes other than system use.
The range of respective area varies with the type of PC. Refer to Appendix L
"PC Memory Map" (page 327).
When data memory (DM) is specified, specify the bit number (00 to 15) after the
word number.
Allocated CVM1/CV Series PCs
f
Data memory
f
Internal/Special Relay
Timer
Counter
f
–
f
Auxiliary Relay
f
–
Section 5-5
Allocated
f
f
f
: OK : NG
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