![background image](http://html1.mh-extra.com/html/omron/nt620c/nt620c_operation-manual_744559198.webp)
5-1
Section
Outline of Host Link/NT Link Operation
187
5-1-3 NT620S/620C Status Control and Notification to PC
This section describes the fundamentals of the display elements, NT620S/620C
status control, and notification which are the basics of the NT620S/620C func-
tions.
For the detail method of use of the PT status control area and the PT status notify
area, refer to Sections 5-7 “NT620S/620C Status Control” (page 234) and 5-8
“Notification of the Operating Status to the PC” (page 239).
Controlling the Display Elements by Using Allocated Bits and Words
The NT620S/620C will operate as follows in the display element control opera-
tion.
[NT620S/620C operation]
(1) The NT620S/620C checks the allocation bits and words of the display ele-
ments and makes an inquiry to the PC.
(2) The PC answers the NT620S/620C about the bit and word data.
(3) The NT620S/620C changes the display status according to the bits and
words obtained from the PC.
[NT620S/620C operation example]
Lamp 0
DM0100 to DM0102?
Bit 010012
NT620S/620C
PC
(“a”, “b”)
(“c”, “d”)
(“e”, “f”)
Bit 010012?
Character-string memory table 2
Numeral memory table 0
First word
: DM0100
First word
: TIM003
Number of saved words
: 3
Number of saved words
: 1
TIM003?
Controlling the NT620S/620C Status by Using Allocated Bits and Words
..... PT Status Control Area (PC to PT)
The PT status control area (PC to PT) is provided to control the NT620S/620C
status from the PC. When data is written to this area in the PC, the NT620S/620C
will read the data and operates according to the data. The PT status control area
is configured as four consecutive words as shown below.
0
Copy type
0
0
0
0
0
The first word (word n) of the PT status control area must be set with the support
tool.
Word 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0 Bit
Screen No. (4-digit BCD)
Screen switch
setting
Copy memory
table setting
Copy destination memory table No. (3-digit BCD)
Copy source memory table No. (3-digit BCD)
PT status control bit
PT status control
n
n+1
n+2
n+3
Содержание NT620C
Страница 1: ...Cat No V033 E1 5 Programmable Terminals NT620S 620C OPERATION MANUAL...
Страница 2: ...NT620S 620C Programmable Terminals Operation Manual Revised April 2001...
Страница 3: ...iv...
Страница 5: ...vi...
Страница 326: ...Appendix K Option List 325 Battery 3G2A9 BAT08 This is a lithium battery used for memory backup...
Страница 328: ......
Страница 329: ......