5 Modbus Connection
5-8
NB-series Programmable Terminals Host Connection Manual (V108)
Modbus RTU Slave
Modbus ASCII
Modbus TCP Slave
Note Address format description: D: decimal, O: octonary, H: hexadecimal.
Device Bit Address Word Address Format Notes
System Internal/External Output
Nodes
LB 0-8999 ------ DDDDD Mapping to
0x 1~9000
Data Registers ------ LB 0-8999 DDDDD Mapping to
4x 1~9000
Device Bit Address Word Address Format Notes
System Internal/External Output
Nodes
0X 1-65535 ------ DDDDD
System Internal/External Input
Nodes
1X 1-65535 ------ DDDDD
Analog Input Data Registers ------ 3X 1-65535 DDDDD
Data Registers ------ 3X 1-65535 DDDDD
Device Bit Address Word Address Format Notes
System Internal/External Output
Nodes
0X 1-65535 ------ DDDDD
System Internal/External Input
Nodes
1X1-65535 ------ DDDDD
Analog Input Data Nodes 3X_bit
1.00-65535.15
------ DDDDD.DD
Data Nodes 4X_bit
1.00-65535.15
------ DDDDD.DD
Analog Input Data Registers ------ 3X1-65535 DDDDD
Data Registers ------ 4X1-65535 DDDDD
Data Registers ------ 4X-DINV 1-65535 DDDDD
Data Registers ------ 3X-DINV 1-65535 DDDDD