Buffer Memory Table - Mitsubishi Electric A1SJ71DN91 User Manual

3. SPECIFICATIONS
(3) Message Communication Commands (Addresses - 0110
TO command is used to write the message communication command.
(a) Reading Attribute Data from a Slave Station
1) Set the command data in the message communication command area using the
TO instruction.
2) Turn ON message communication request (Y(n+1)2) with a sequence program.
3) Message communication complete (Xn2) automatically turns ON when the
message communication completes.
4) Check the message communication error signal (Xn5) to see if the message
communication has been normally completed.
5) The read attribute data is saved in the message communication data area.
Table 3.5 shows the data that should be set by a sequence program.
Buffer Memory
Address
(Hexadecimal)
0110
H
0111
H
0112
H
0113
H
(b) Writing Attribute Data to a Slave Station
1) Set the command data in the message communication command area using the
TO instruction.
2) Set the attribute data to be written in the message communication data area
using the TO instruction.
3) Turn ON message communication request (Y(n+1)2) with a sequence program.
4) Message communication complete (Xn2) automatically turns ON when the
message communication completes.
5) Check the message communication error signal (Xn5) to see if the message
communication has been normally completed.
Table 3.6 shows the data that should be set by a sequence program.
Buffer Memory
Address
(Hexadecimal)
0110
H
0111
H
0112
H
0113
H
Table 3.5 Set Data for Get Attribute
Item
Command number 0101
Slave station number Lower byte: Slave station number to read
(slave MAC ID),
class ID Upper byte: Object class ID to read attribute data
Instance ID Object instance ID to read attribute data
Lower byte: Object attribute ID to read attribute
Attribute ID
Upper byte: Always set to 0
Table 3.6 Set Data for Set Attribute
Item
Command number 0102
Slave station number
Lower byte: Slave station number (MAC ID)
(slave MAC ID),
Upper byte: Object class ID
class ID
Instance ID Object instance ID
Lower byte: Object attribute ID
Attribute ID,
Upper byte: Byte length of attribute data to be
data length
−
3 13
MELSEC-A
to 011F /272 to 287)
H H
Contents
= Get Attribute
H
attribute data (MAC ID)
data
Contents
= Set Attribute
H
written 1 to 240 (1 to F0
H
)
H