11: M
ODBUS
C
OMMUNICATION
11-18 S
MART
AXIS P
RO
/L
ITE
U
SER
'
S
M
ANUAL
FT9Y-B1378
Modbus Communication via Ethernet Communication
Applicable SmartAXIS
The SmartAXIS supports Modbus TCP clients and Modbus TCP servers. Connect the Ethernet port on the SmartAXIS to enable the
SmartAXIS to communicate with Modbus TCP compliant devices.
When configured as a Modbus TCP client, the SmartAXIS can monitor and change the data memory of the network devices
supporting Modbus TCP server. A maximum of three connections can be allocated to Modbus TCP clients. Each connection can
communicate with one Modbus TCP server device.
When the SmartAXIS is configured as a Modbus TCP server, the device data of the SmartAXIS can be monitored and changed from
Modbus TCP client devices. The SmartAXIS can allocate a maximum of three connections for Modbus TCP servers.
For the Modbus TCP client function and how to configure it, see "Modbus TCP Client" on page 11-19. For the Modbus TCP server
function and how to configure it, see "Modbus TCP Server" on page 11-24.
FT1A-12 FT1A-24 FT1A-40 FT1A-48
—XXX
Modbus TCP Server 1 Modbus TCP Server 2 Modbus TCP Server 3Modbus TCP Client
Ethernet
Ethernet hub Ethernet hub
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