Robustel R3000 NU User Manual
Page 39
Robustel GoRugged R3000 NU User Guide
RT_UG_R3000 NU_v.1.0.0 24.03.2014 38 / 110
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via VPN tunnel.
Note: when you do not enable any VPN tunnel, this item will not show up.
Interval
Timeout
@Transparent
The serial port will queue the data in the buffer and send the data to the
Ethernet WAN when it reaches the Interval Timeout in the field.
Note: Data will also be sent as specified by the packet length or delimiter settings
even when data is not reaching the interval timeout in the field.
10
Packet
Length
@Transparent
The Packet length setting refers to the maximum amount of data that is allowed
to accumulate in the serial port buffer before sending. 0 for packet length, no
maximum amount is specified and data in the buffer will be sent as specified by
the interval timeout or delimiter settings or when the buffer is full. When a
packet length between 1 and 1024 bytes is specified, data in the buffer will be
sent as soon it reaches the specified length.
Note: Data will also be sent as specified by the interval timeout or delimiter
settings even when data is not reaching the preset packet length.
1360
Enable Delimiter1/2
When Delimiter 1 is enabled, the serial port will queue the data in the buffer and
send the data to the Ethernet WAN when a specific character, entered in hex
format, is received. A second delimiter character may be enabled and specified in
the Delimiter 2 field, so that both characters act as the delimiter to control when
data should be sent.
Disable
Delimiter1/2
(Hex)
@Transparent
Enter the delimiter in Hex.
0
Delimiter
Process
@Transparent
The Delimiter process field determines how the data is handled when a delimiter
is received.
None: Data in the buffer will be transmitted when the delimiter is received; the
data also includes the delimiter characters.
Strip: Data in the buffer is first stripped of the delimiter before being transmitted.
Strip
Local IP @ Modbus
This item will show up When you enable any VPN tunnel of R3000 NU, it means
serial data can be matched to this local IP address and be transmitted or received
via VPN tunnel.
Note: when you do not enable any VPN tunnel, this item will not show up.
0
Local Port @ Modbus
Enter the Local port for Modbus.
0
Attached serial device
type @Modbus
Select From “Modbus RTU slave”, “Modbus ASCⅡ slave”, “Modbus RTU master”
and “Modbus ASCⅡ master”.
Modbus RTU slave: router connects to Modbus slave device which works under
Modbus RTU protocol.
Modbus ASCⅡ slave: router connects to Modbus slave device which works
under Modbus ASCⅡprotocol.
Note: When select “Modbus RTU slave” and “Modbus ASC
Ⅱ
slave” protocol,
router is as TCP Server site, user need to enter a local port number in “Local Port
@Modbus” and wait to be connected.
Modbus RTU master: router connects to master device which works under
Modbus RTU protocol.
Modbus ASCⅡ master: router connects to master device which works under
Modbu
s RTU
slave