L-VIS User Manual
260
LOYTEC
Version 6.2
LOYTEC electronics GmbH
11.6 Modbus
This page is used to configure the desired mode of operation (Master or Slave) for the
available Modbus interfaces, as well as the desired Modbus address ranges for slave mode.
There are two sections:
Modbus TCP:
Configures operation of the Modbus TCP interface.
Modbus RTU:
Configures operation of the Modbus RTU interface, if available.
In each section, the following settings can be made:
Interface Mode:
Sets the desired mode of operation for the given interface. In
almost all cases, the desired mode will be
MASTER
.
Slave Address Ranges:
These input fields become available when slave mode is
selected. They define a valid address range for each type of Modbus register.
Modbus slave data points created on the respective interface need to use
addresses within the ranges specified here.
See also Section 10.6.6 about special properties of Modbus data points.
11.7 Mail Account
This page allows configuring the SMTP mail account used to deliver E-Mails. To use the
mail feature, the following conditions must be met:
The device must be connected to a TCP/IP network and must be able to
communicate with the desired SMTP server. In many cases, this server will be
outside of the current subnet. Therefore it is important that the gateway address
and the network mask settings on the L-VIS are correct.
At least one DNS server address must be set on the L-VIS device if the SMTP
server is given as a DNS name (which is usually the case).
In the mail account configuration dialog, the enable checkbox must be set and a
name or IP address of an SMTP server must be entered.
It is desirable to use some form of time synchronization on the L-VIS device, in
order to provide correct time stamps when building and delivering mails. Some
mail clients tend to sort incoming mails by origin date (not date of reception),
which could cause confusion if the date and time of the device are wrong.
If the SMTP server requires authentication, set the option
Enable user authentication
and
enter a user name and password. A secure connection via STARTTLS is automatically used
if supported by the server. To use the older, deprecated SMTPS standard (plain SMTP over
SSL/TLS, usually on port 465), check the option
Use SSL secure connection
. Standard
ISP mail service often authenticates the user just by IP address, since the address was
assigned by the ISP and therefore identifies the user as being a customer of the ISP.