User`s manual
7-54
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(Response time : 0 ms)
(Response time : 0 ms)
■ RSM (Read system memory)
■ WSM (Write system memory)
Read the contents of the system memory from system memory addresses 1 to 2
(Maximum of 256 sequential bytes).
Write the contents of the system memory from system memory addresses 1 to 2
(Maximum of 256 sequential bytes).
Data
Function
Command
Response
Execution
condition
Example
for use
Communication format
0000 to 0377, 0400 to 2777 (Octal)
2 characters (hexadecimal) n: Max. 512
Mode 0, Mode 1, Mode 2Write mode
Command
Response
Command
Response
Data 1
(2 characters)
Data n
(2 characters)
(H) (L)
S
C
S
C
C
R
A
D
A
D
(H) (L)
R
I
S
M#
R
A
D
A
D
(H) (L)
R
I
(H) (L)
S
C
S
C
C
R
S
M#
W
System memory
addresses 1
(4 characters)
System memory
addresses 2
(4 characters)
A
D
A
D
(H) (L)
R
I
(H) (L)
S
C
S
C
C
R
S
M?
R
System memory
addresses 1
(4 characters)
System memory
addresses 2
(4 characters)
System memory
addresses 1
(4 characters)
System memory
addresses 2
(4 characters)
Data 1
(2 characters)
Data n
(2 characters)
(H) (L)
S
C
S
C
C
R
A
D
A
D
(H) (L)
R
I
S
M?
W
System memory
addresses 1
(4 characters)
System memory
addresses 2
(4 characters)
Station
number
Response
time
Station
number
Response
time
Sum check
code
Sum check
code
System memory
addresses 1
System memory
addresses 2
System memory
addresses 1
System memory
addresses 2
01?0RSM02010201B7
01#0RSM02010202010012
C
R
C
R
Read the data (hexadecimal) in system memory addresses #0201, #0202 in PLC01.
#0201 #0202
Station
number
Response
time
Station
number
Response
time
Sum check
code
Sum check
code
System memory
addresses 1
System memory
addresses 2
System memory
addresses 1
System memory
addresses 2
01#0WSM02010202CE
01?0WSM020102020101F0
C
R
C
R
#0201 #0202
System memory
address
Data
Function
Command
Response
Execution
condition
Example
for use
Communication format
0000 to 0377, 0400 to 2777 (Octal)
2 characters (hexadecimal)
Mode 2Write mode
System memory
address
Write 01, 01, (hexadecimal) to system memory addresses #0201, #0202 in PLC01.
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Stop, does not stop the data written by a HLT command
Stop, does not stop the data written by a HLT command
Note : Do not write data to addresses that are not available to customers for use as system memory.
These addresses belong to the PLC. It may cause a malfunction.