![background image](http://html1.mh-extra.com/html/omron/nt21-series/nt21-series_reference-manual_744543375.webp)
4-3
Section
Commands/Responses
366
•
A maximum of 100 words can be read at one time.
•
In the response, maximum of 50 words can be returned at one time. If reading
of more than 50 words is specified, the response is split into two parts. In this
case the first part always contains 50 words of data. Note also that the first
word number read in the second part of the responses will be the word number
of the first word in the response data.
Example
Reading the PT Status in the PT Notify Area (Allocated Words: 0010 to 0011)
Assume that the following data is stored for PT notify area:
0123H
8000H
0010 CH
0011 CH
Command
1B
52
[ESC]
0
R
31
30
30
30
[CR]
0D
4D
M
30
0
0
0
1
0
30
2
32
No check sum (2 word read), first word read = 0010
Response
1B
52
[ESC]
8
R
30
30
31
33
2C
32
38
4D
M
30
0
0
1
0
1
2
3
,
[CR]
30
0D
0
0
30
2
32
31
30
0
30
0
36
6
37
7
4-3-2 Numeral Memory Table Read Command
(Sent from Host to PT)
Command
Format
1B
52
[ESC]
[CR]
R
0D
4E
N
m
t1
t2
t4
(l1)
(l2)
(s1)
(s2)
t3
* *
* *
* *
* *
* *
* *
* *
* *
* *
m
:
Check sum present/absent (1 BCD digit)
0 : Absent
1 : Present
8 : Absent (1 table read)
9 : Present (1 table read)
t
1
to t
4
:
First numeral memory table read (4 BCD digits)
0000 to 1999
l
1
, l
2
:
Number of read tables (2 BCD digits)
00
: 100
01 to 99
: 1 to 99
When m is 8 or 9, omit this setting.
s
1
, s
2
:
Check sum (2 hexadecimal digits)
When m is 0 or 8, omit this setting.
Reference:
The maximum number which can be specified for first numeral memory table
read depends on the setting for numbers of numeral table entries
(512/1000/2000) made at the Support Tool.
electronic components distributor
Summary of Contents for NT21 Series
Page 3: ...iv Downloaded from Elcodis com electronic components distributor...
Page 5: ...vi Downloaded from Elcodis com electronic components distributor...
Page 463: ...Downloaded from Elcodis com electronic components distributor...
Page 465: ...Downloaded from Elcodis com electronic components distributor...