Devices 97
Modbus/TCP settings
The figure below shows the Interface settings dialog box of the Modbus/TCP gateway tab.
•
32-bit word order
is a drop-down list for selecting the most or least significant word
order for 32-bit values. There are 2 options:
•
Low-high
•
High-low
•
Auto nodes RW-flag
is a drop-down list for enabling or disabling write access. There
are 2 options:
•
Read-only
•
Read-write
•
Auto write IP address
is a text box where the IP address of the Modbus/TCP master
can be specified.
•
Auto write netmask
is a text box where the netmask for Modbus/TCP master IP
address can be specified.
•
Firewall / allowed on
shows the network interfaces on which Modbus/TCP gateway
access is enabled. Changes can be done in
Settings -> Network services ->
Firewall settings
.
•
Firewall / denied on
shows the network interfaces on which Modbus/TCP gateway
access is disabled. Changes can be done in
Settings -> Network services ->
Firewall settings
.
•
Timeout in milliseconds
is a text box where the user can specify the maximum
waiting time for a response given to an individual Modbus/TCP request. If the
response hasn't arrived in the allotted time, Modbus error 0x06 -
Slave Device Busy
is sent back to the master.
When the master's request contains a range of values, the timeout is applied to each value
separately.
Summary of Contents for NETA-21
Page 2: ......
Page 4: ......
Page 18: ...18 Introduction to the manual ...
Page 32: ...32 Electrical installation ...
Page 42: ...42 Start up ...
Page 50: ...50 Program features ...
Page 56: ...56 Front page ...
Page 68: ...68 Users ...
Page 114: ...114 Networks ...
Page 150: ...150 Reporting ...
Page 172: ...172 Security ...
Page 176: ...176 Memory card ...
Page 184: ...184 Frequently asked questions ...
Page 190: ...190 Diagnostics and troubleshooting ...
Page 194: ...194 Technical data ...