Omron NT21 Reference Manual page 394

Commands/Responses
Response
Format
[ESC] R B
1B 52 42
dn1
* *
Function
Example
Reading bit memory table entries 23 to 40
t1 t2 t3 t4
* * * * * * * * * * * *
s1
dn2 dn3 dn4
* * * * * * * *
t to t : First bit memory number table entry read (4 BCD digits)
1 4
0000 to 0999
l , l : Number of read table entries (2 BCD digits)
1 2
00:
01 to 99:
d1 , d1 , d1 , d1 , ..., dn
1 2 3 4
Contents of the read bit memory table entries (4 hexadecimal
digits,
0000 to FFFF
The contents of bit memory table entries are represented as 1
bit data (OFF=0, ON=1) and 16 entries of bit memory table are
read out as 4 hexadecimal digits value. (Table entries with
smaller number is the rightmost bit.)
The bit memory table data is delimited by commas by each 16
table entries.
s , s : Checksum (2 hexadecimal digits)
1 2
This is always added.
Reads the data of the specified number of bit memory table entries, starting
from the specified bit memory table entry.
A maximum of 100 table entries can be read at one time.
If a number of table entries that is not a multiple of 16 is specified, 0 is inserted
in remaining bits (leftmost bits).
The number (n) of 4 hexadecimal digits value to be read out is as follows:
n=(number of bit memory table entries to be read–1)\16)1
(\ indicates the subtraction of the integer.)
40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23
OFF ON OFFOFFOFF ON OFF ON ON ON OFF ON OFF ON ON OFF ON ON
0 1 0 0
0 0 0 1 1
1 7
31 37
l1 l2 d11 d12
* * * * * * * *
s2 [CR]
0D
* *
100 table entries
1 to 99 table entries
, dn , dn , dn :
1 2 3 4
n)
H
0 1 0 1 1 1 0 1 0 1
7 5
5 B 0 0 0
,
35 42 2C 30 30 30
Section
,
d13 d14
2C
* * * * * * * *
Bit memory table
Changing to
1 0 1 1
Bit data
Changing to hexa-
B
decimal (Remaining
0)
left most bit
Data to be read out
1
ASCII code
31
4-3
379