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Search for Modbus RS485 Devices:
This option allows the DAS to search for Modbus devices attached
on the RS/485 port. This feature may be disab led to reduce queries on the RS/485 port.
Default is enabled.
Search for Sensor Network Devices:
This option will allow the DAS to search for sensor network enabled
ModHoppers (R9120), and log data from attached devices. Note: this is for sensor network devices such as
PointSix and Badger receivers, and not Modbus or Pulse devices. Default is disabled.
8 MODBUS
8.9 Alarm Setup
The Modbus Alarms section provides the ability to send messages when alarm levels are exceeded.
Messages can be sent by email, SNMP or displayed on the LCD console. Alarms are processed at the end
of the data logging period. For more frequent alarms, shorten the data log interval. Log readings and alarm
processing can be set to as often as once per minute.
Display all alarms on LCD console:
When checked, all alarm messages are shown on the LCD display of
the DAS.
SNMP Trap Send Enabled:
When checked, SNMP Trap messages are sent after every log period for each
data point that is in an alarm state. The trap includes information about the DAS system data point, and
alarm state. A full MIB is located on the DAS , click the MIB link to the right of this option.
SNMP Trap Host 1 (2,3):
When SNMP traps are enabled, a trap message is sent to each of the trap host
addresses. Specify the trap host by IP address, not DNS name.
Direct email on alarm.
When checked, the DAS will send an email message when any data point changes
its alarm state.
SMTP Mail Server Address:
The IP address of the email server on the LAN that will process and forward
the email message to the recipient.
Sender Address:
The address that will be used in the “From:” line of the email. This is helpful in identifying
the source of the alarm email message. If your SMTP mail server has junk filtering, you may be required
to use a sender address that matches a mailbox address on the SMTP mail server; check with your mail
server administrator for specific details on this issue.
Recipient address 1 (2,3):
The DAS can send a copy of the alarm notice to multiple email addresses.
Specify one, two or three email addresses in the fields provided for the recipient addresses.
8.10 Modbus Framework
The Modbus Framework feature is a tool to allow the DAS to read data from any Modbus device by creating
a template in the Modbus Framework editor. The template describes the Modbus register read commands,
and the conversion required for each data point that is to be read. The Framework feature is an advanced
feature of the DAS that requires the user to be familiar with the Modbus protocol and with the Modbus
register point list for the specific Modbus device that will be used. For more information on the Modbus
Framework feature, download the Modbus Framework documentation from www.leviton.com.
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