Details Of Buffer Memory Addresses - Mitsubishi Electric MELSEC iQ-R Series User Manual

Details of buffer memory addresses

The following shows the buffer memory addresses of the RJ71DN91.
Master function message communication area
This area is used for the message communication of the master function.
For the execution timing, refer to the following.
Page 67 Details of master I/O signals
■Message communication command (Un\G272 to Un\G287)
Set the message communication command.
• Reading the attribute data of the slave node
Buffer memory address
Un\G272
Un\G273
Un\G274
Un\G275
• Writing the attribute data to the slave node
Buffer memory address
Un\G272
Un\G273
Un\G274
Un\G275
• Reading the communication error information of the slave node
Buffer memory address
Un\G272
Un\G273
• Reset
Buffer memory address
Un\G272
Un\G273
Un\G274
• Performing other message communications
Buffer memory address
Un\G272
Un\G273
Un\G274
Un\G275
APPX
78
Appendix 3 Buffer Memory
Item
Command number
Node address of slave node (Slave MAC ID), class ID
Instance ID
Attribute ID
Item
Command number
Node address of slave node (Slave MAC ID), class ID
Instance ID
Attribute ID, data length
Item
Command number
Node address of slave node (Slave MAC ID), class ID
Item
Command number
Node address of slave node (Slave MAC ID), class ID
Instance ID
Item
Command number
Node address of slave node (Slave MAC ID), class ID
Instance ID
Attribute ID, data length
Description
0101H = Reading attribute (Get Attribute)
Lower byte: Node address of slave node (MAC ID)
Upper byte: Object class ID
Object instance ID
Lower byte: Object attribute ID
Upper byte: Always set 0.
Description
0102H = Getting attribute (Set Attribute)
Lower byte: Node address of slave node (MAC ID)
Upper byte: Object class ID
Object instance ID
Lower byte: Object attribute ID
Upper byte: Byte length of the attribute data to be written 1 to 240 (1H
to F0H)
Description
0001H = Communication error information read
Lower byte: Node address of slave node (MAC ID)
Upper byte: Always set 0.
Description
0201H = Reset
Lower byte: Node address of slave node (MAC ID)
Upper byte: Object class ID
Object instance ID
Description
FE**H (For details on **, refer to DeviceNet common service in THE
CIP NETWORKS LIBRARY Volume 3 DeviceNet Adaptation of CIP
Edition 1.14.)
Lower byte: Node address of slave node (MAC ID)
Upper byte: Object class ID
Object instance ID
Lower byte: Object attribute ID
Upper byte: Always set 0.