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Atop Modbus Gateway
MB5400 Series
User’s Manual V 1.3
29
3.7.4 VCOM Settings
These settings will generate a virtual Serial (VCOM) port within the Modbus Gateway device
based on a TCP network connection. VCOM is a
TCP connection
which is encoded in an Atop
Technologies’ exclusive private protocol. Note that MB5400 series Modbus Gateway can only
run as a TCP server which will be waiting for a connection request from a TCP client (a serial
device).
Fig. 3.14 shows the page of VCOM Settings in which the VCOM number 1 is set as an RTU
Slave. This means that a serial device that is connected to this VCOM port on the Modbus
Gateway will be a Modbus slave node and communicate with a Modbus master node using
Modbus/RTU protocol. If you need a VCOM setting, proceed to select
Basic Settings → VCOM
Settings
and check the VCOM’s
“Enable”
box to allow configuration on the selected TCP’s
port of the Modbus Gateway device.
VCOM Port:
Using a TCP connection, the Modbus Gateway device (TCP server)
listens to whether there are any TCP clients (VCOM clients) connecting (using
Serial-IP) to its ports. The VCOM Port or the port of the TCP connection can be
configured as a number between 1 and 65535. The default VCOM Port number is
4660.
Note:
For Windows operating system, a Serial/IP software is required to use this feature. A restrictive
Serial/IP
Redirector
software is installed along with Atop’s
Serial Manager®
. The user can access the Serial/IP software
through
Virtual COM
Serial/IP Tools
menu.
Содержание MB5400
Страница 1: ...MB5400 Modbus Gateway User s Manual v 1 3 December 2014 ...
Страница 60: ...Atop Modbus Gateway MB5400 Series User s Manual V 1 3 60 Fig 4 2 Entries of Slave ID Mapping in Offset Mode ...
Страница 62: ...Atop Modbus Gateway MB5400 Series User s Manual V 1 3 62 Fig 4 4 Entries of Slave ID Mapping in Alias Mode ...