Chapter8 Communication Function
8-7
8.1.4 List of commands
Command list for communication.
Command
Main command
Command type
Division
Item
Code ASCII code Code ASCII code
Treatment
Individual
reading
r(R)
H72
(H52)
SS 5353 Reads device of Bit, Word and type.
Reading
device
Continuos
reading
r(R)
H72
(H52)
SB 5342
Reads device Word in block unit.
(Continuous reading Bit is unavailable)
Individual
reading
w (W)
H77
(H57)
SS 5353 Writes data to device of Bit and Word type.
Writing
device
Continuos
reading
w(W)
H77
(H57)
SB 5342
Writes data to Word type in block unit.
(Continuous reading Bit is unavailable)
CPU
Status reading
r(R)
H73
(H53)
ST 5354
Reads flag list like PLC operation status and error
information. (For detailed flag contents, refer to
MK80S manual).
Command
Main command
Register No.
Division
Item
Code ASCII code
Register
no.
ASCII code
Treatment
Monitoring variable
register
x(X)
H78
H58
H00~H09 3030 ~ 3039 Register device to monitor.
Execution of
monitoring
y(Y)
H79
(H59)
H00~H09 3030 ~ 3039 Execute registered device to monitor.
Remark
1)
MK80S base unit identifies capitals or small letters for main commands, but not for the others.
2)
If it’s a main command in capitals, it calculates BCC value. But if it’s not, it doesn’t. Therefore, when BCC for
frame check is used, main commands must be in small letters.
