2-2SectionAreas for Control/Notification
61
tination memory table entry number (word n + 2) of the PT status control
area.
2. Set the type of the memory table to be copied for memory table copy type (bit
2) of the PT status control bits (word n + 3) as follows:
• 1 (ON): When copying between numeral memory table entries
• 0 (OFF): When copying between character string memory table entries
3. Set 1 (ON) for memory table copy execution (bit 3) of the PT status control
bits (word n + 3).
Memory table entry data is copied.
4. After copying has been executed, return memory table copy execution (bit
3) to 0.
Reference:  If the display method or number of registered words is different for the copy
source and copy destination memory table entries, the data may not be dis-
played correctly.
 If the contents of memory table entries are changed by PT status control area
operation, the change in memory table contents is not notified by the PT status
notify area.
 Memory table entries are copied differently when the PT is set to NT20S or
NT30/620 compatible mode. Refer to Appendix C for details on the NT20S and
NT30/620 compatible modes.
Alarm History Initialization (Bit 1)
This bit is used to initialize the alarm history recorded in the PT.
When it is switched from 0 (OFF) to 1 (ON), the alarm history in the PT is initial-
ized.
After initialization, return its status to 0.
Reference: The alarm history can also be initialized from the MEMORY INIT. MENU screen
under the System Menu of the PT.
2-2-2 PT Status Notify Area (PT to Host)
The PT status notify area is provided to notify the host of changes in the status of
the PT. The host can determine the status of the PT by reading this area.
The PT status notify area is configured as two consecutive words as shown be-
low. The first word (word m) is set in the Control/Notify Area settings in the PT
configuration settings made with the Support Tool.
Word
000
m + 1
PT status
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Bit
Numeral/character string memory table number
(4-digit BCD or hexadecimal value)
Content update
memory table
PT status notify bits
m
Reference: The configuration and functions of the PT status notify area are different when
the PT is set to NT20S or NT30/620 compatible mode. (There are 3 words, with
the first word indicating the screen currently being displayed.) Refer to Appendix
C for details on the NT20S and NT30/620 compatible modes.
Words can be allocated for the PT status notify area (PT → host) in the following
host (PC) areas.
Symbol C-series PCs Allocation CV-series PCs Allocation CS/CJ-series PCs Allocation
None IR Area OK CIO Area OK CIO Area OK
H HR Area OK --- --- HR Area
Not for
Host Link
Words Allocated of the
PT Status Notify Area
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