ABB ARC600 User Manual page 71

1MRS758459 J
Name
Inter-frame timeout
Exceptions
Generate gateway ex-
ceptions
Pass gateway excep-
tions
Network server set-
tings
Server TCP/UDP - port Defines the TCP or UDP port that masters can
Max. number of cli-
ents
Connection idle time-
out
Enable keepalive
ARC600
User Manual
Description
Defines the idle time in microseconds (millionths
of a second) that marks the end of Modbus frame
in serial communication. If the value is zero, the
device uses the standard 4 character time. The
recommendation is to use a value as small as pos-
sible to speed up communication and increase the
value if problems arise. Some PC programs can in-
sert unexpected delays between serial characters.
Defines if the device generates and returns a Mod-
bus gateway exception message to the master if
no valid reply is not received from the slave. If set
to "Yes", the generation of exceptions is enabled.
This functionality is useful for debugging.
If set to "Yes", gateway exception replies from the
slave side are passed to the master. If set to "No",
the replies are filtered away.
form connections to. Default Modbus TCP/IP com-
munication port is 502. If multiple Modbus gate-
ways are running on same device (for both serial
ports) the TCP/UDP communication ports must
not be same. For example, ports 502 and 504 can
be used. The network and the device's firewalls
must enable TCP or UDP communication for that
port.
Defines how many network masters can be con-
nected to the device simultaneously. The recom-
mended value is at least 2 when using TCP com-
munication. Otherwise if the device does not rec-
ognize a partially closed connection, forming new
connections is not accepted by the device the
time set in parameter "Connection idle timeout"
is elapsed.
If there has not been communication on this route
during given amount of seconds, the device auto-
matically closes the TCP connection to slave and
therefore frees the slave's communication resour-
ces. This is especially useful when multiple mas-
ters access the same slave. The recommended set-
ting is about two times the polling interval of the
master.
Defines if connection testing is performed by
sending TCP keepalive packets at certain intervals.
enabled for TCP network communication. If set to
"Yes", testing the TCP connection with slave is ena-
bled.
Modbus application settings
Value range
0...2 000 000
(0...2 seconds)
No, Yes
No, Yes
1...32500
0...20
0...32500
No, Yes
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