semaphore TBOX LT2-530 Series, User Manual, Page: 52 / 197

Version : 1.09 52
HTTP(S): port used to access
TB
OX
LT2
as WebServer. (by default= 80 & 443)
ModBus/TCP-Slave: port used by a ‘Master’ to access
TB
OX
LT2
as ‘Slave’. (by default=502)
Changing of TCP port is automatically applied to 'WebForms 1.0' as it uses ModBus for data
communication.
ModBus/TCP-Master: port used when
TB
OX
LT2
is ‘Master’ to access a remote device (by default=502)
ModBus over TCP: port used by ModBus RTU encapsulated into TCP (by default= 7701)
ModBus over UDP: port used by ModBus RTU encapsulated into UD (by default= 49152)
FTP(S): port used by
TB
OX
LT2
to send Files (by default=21).
SMTP(S): port used by
TB
OX
LT2
to send e-mails (by default=25 & 587).
POP3(S): port used by
TB
OX
LT2
to collect subject of e-mail (by default=110 & 995).
Modbus over TCP: ModBus over TCP is a ModBus RTU frame encapsulated into a TCP frame.
Compared to ModBus/TCP, in which there is no station address neither CRC.
TCP port used by TBox MS to communicate in ModBus over TCP (default=7701)
Modbus over UDP: ModBus over UDP is a ModBus RTU frame encapsulated into a UDP frame.
Compared to TCP, it is faster than TCP because it does not require any acknowledgement.
With UDP, packets are just pushed without verification.
TCP port used by TBox MS to communicate in ModBus over UDP (default=49152)
SSH: used to carry on a secure connection, for instance to access LINUX in console mode. (default= 22)
7.6.7. TCP/IP
TCP/IP addresses for incoming calls
Range of addresses used during
incoming calls. When
TB
OX
LT2
is
dialed in by a modem.
TB
OX
LT2
uses the first address of
the range and applies the following
to the remote equipment.
Typically, this information is needed
when
TB
OX
LT2
is used as a Web
Server, dialed from a browser.
Avoid using addresses in the same range as the IP address defined for the LAN card of
the PC used as Browser.