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Areas for Control/Notification
Section 7-2
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 tables
@ 0 (OFF): When copying between character string memory tables
3 Set “1” (ON) for “memory table copy execution” (bit 3) of the PT status control
bits (word n + 3).
The memory table 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 tables, the data may not be displayed cor-
rectly.
- If the contents of memory tables are changed by PT status control area opera-
tion, the change in memory table contents is not notified by the PT status notify
area.
- Alarm history initialization (bit 1)
This bit is used to initialize the alarm history recorded in the NT31/NT31C.
When it is switched from “0” (OFF) to “1” (ON), the alarm history in the
NT31/NT31C is initialized.
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 NT31/NT31C.
7-2-2 PT Status Notify Area (NT31/NT31C to Host)
The PT status notify area is provided to notify the host of changes in the status of
the NT31/NT31C. The host can determine the status of the NT31/NT31C by read-
ing this area.
The PT status notify area is configured as two consecutive words as shown below.
The first word (word m) is set in the “Control/Notify Area” settings in the PT config-
uration settings made with the Support Tool.
Word
000m + 1
PT status
1514131211109876543210
Bit
Numeral/character string memory table number
(4-digit BCD or hexadecimal value)
Content update
memory table
PT status notify bits
m
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