Specifications

App6-32 Appendix 6 Universal Serial Communications
Read Memory Command
Note: Due to the fact that communication speed is increased when you use the read CHR
command to read characters, it is recommended that you use this command.
• Read memory command
Example: Address: Read the double-word data “75,000” (DEC) contained in the address 0020
(0014H).
- Host side
There should be no more than 5 DLEs.
Address: Top address of the data memory to be read (HEX ASCII)
Count: Number of characters to be read (HEX ASCII)
* When the data to be read is not continuous, “DLE” is inserted as a delimiter
between the breaks.
- V series side
Address: Top address of the data memory to be read (HEX ASCII)
Count: Amount of data memory to be read (HEX ASCII)
The read sequence is the same as the command sequence (HEX ASCII).
HL
A
d
d
r
e
s
s
A
d
d
r
e
s
s
C
o
u
n
t
C
o
u
n
t
D
L
E
R M
D
L
E
S
T
X
E
T
X
S
U
M
D
L
E
D
L
E
S
T
X
Memory
data
HL
E
T
X
S
U
M
Memory
data
Read memory command
Host side
V series side
Transmission data
Transmission data
02H 42H41H
32H
38H46H34H 30H
31H30H
30H 03H10H
F8H
24H
01H00H
D
L
E
B A
S
T
X
E
T
X
02H 52H4DH 33H42H30H30H 31H34H 30H30H 30H32H10H 03H
D
L
E
R M 0 0 1 4 0 0 0 2 3 B
S
T
X
E
T
X
Host side
V series side
Data is sent from the V series as shown
below.
75,000 (DEC) = 0001 24F8 (HEX)