5. CONFIGURATION
Figure 72: Device General Parameters Settings
Configuration Description Default Options
IP Address Server IP address 0.0.0.0 1.0.0.1 to 223.255.255.255
TCP Port TCP port 502 2 to 65534
Slave Address MODBUS Slave address 1 0 to 255
Table 107: MODBUS Client General Configurations
Notes:
IP Address: IP address of Modbus Server Device.
TCP Port: if there are multiple instances of the protocol added in a single Ethernet interface, different TCP ports must be
selected for each instance. Some TCP ports, among the possibilities mentioned above, are reserved and therefore cannot be
used. See table Reserved TCP/UDP ports.
Slave address: according to the MODBUS standard, the valid address range for slaves is 0 to 247, where addresses 248 to
255 are reserved. When the master sends a command of writing with the address set to zero, it is performing broadcast requests
on the network.
The parameters in the advanced settings of the MODBUS Client device, found on the button Advanced... in the General
Parameters tab are divided into: Maximum Simultaneous Requests, Communication Time-out, Mode of Connection Time-out
and Inactive Time.
Configuration Description Default Options
Maximum Simultaneous
Request
Number of simultaneous re-
quest the client can ask from
the server
1 1 to 8
Communication Time-out
(ms)
Application level time-out in
ms
3000 10 to 65535
Mode
Defines when the connec-
tion with the server finished
by the client
Connection is
closed after
an inactive
time of (s):
10 to 3600.
Connection is closed after a
time-out.
Connection is closed at the
end of each communica-
tion.
Connection is closed after
an inactive time of (s): 10
to 3600.
Inactive Time (s) Inactivity time 10 3600
Table 108: MODBUS Client Advanced Configurations
Notes:
132