Date: 2021-08-17
Copyright of the European Union is effective (Copyright EU) (c) 2021 GENEREX Systems GmbH, Hamburg, Germany, All rights reserved
TEL +49(40)22692910 - EMAIL [email protected] - WEB www.generex.de (This and all other product datasheets are available for download.)
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The reasons for this behaviour can vary. some reasons may be:
- wrong encryption type
- wrong or closed ports
- DNS / Gateway settings are wrong
... or the fact, a mail provider does not allow this kind of mail traffic.
Email-Traps
Mail trap messages are automatically generated by industrial systems for information and status reports. Retrieved and
evaluated by a corresponding recipient they are very useful inside semi- or full-automated infrastructures. The difference to a
normal email is that there is no option to enter custom text or define a different recipient.
A valid mail account must be deposited to send mail traps.
For details, please refer the Chapter
Configuring UPS
In some cases, administrators need to use different mail accounts - if they choose to one Email account, CS141 offers to copy
registration data directly from standard mail configuration:
By pressing copy from Email, the CS141 fetches the data already entered without passwords:
The password of the mail account needs to be verified by entering manually.
Modbus
Field buses are bus systems that connect field devices like sensors or actuators to communicate with a parent automation
device.
If several communication participants send their information through the same line, it is necessary to determine who (identifier)
will send what (measure, command) at a specified time (initiative). To ensure this communication, standardized protocols will be
used.
The Modbus protocol was launched in 1979 by Gould-Modicon for communicating with their own programmable logic
controllers, and has become an unofficial standard in the industry due to the fact it is an open protocol.
Since 1999, fieldbuses have been standardized worldwide in the IEC 61158 standard (Digital data communication for
measurement and control - Fieldbus for use in industrial control systems). The second generation of fieldbus technology is
based on real-time Ethernet.
Note:
For further information, please refer to the Modbus manual, downloadable from our website at www.generex.de.
Modbus providing devices
Modbus is a protocol for serial communication. The data is transmitted using 16-bit registers (integer) or data byte status
information.
Using Modbus has many advantages:
-
The basic structure of Modbus has never really changed to ensure best compatibility over the years. The number of
unified devices provides a stable platform for integration, maintenance and configuration.
-
This open protocol has been established as an unofficial standard in many industrial machines worldwide. As soon as
a device supports Modbus, it can usually be integrated into an existing Modbus network
Modbus can be used as single-master protocol
The master controls the entire transmission and monitors accidental occurring timeouts. The connected slave devices may only
send telegrams if requested by the master. For remote control and monitoring of equipment, the Modbus interface in each
CS141 can read measuring, events, status information and other things within the master-slave protocol.
-
Note:
If you do not find readings you are looking for, do not assume this could be an error. As an example, if you are looking for
rare or custom UPS functions, it is possible that the according UPS communicates this to the CS141 via SNMP, but the
manufacturer does not store a Modbus address for these readings.
As a consequence, the CS141 will show it with its own web interface, but cannot serve your Modbus query.
