Xylem System 5000 User Manual - Manual (Page 79)

Outputs
77
Modbus Slave can be utilized as both an
Input and/or an Output.
Modbus Slave Output enables the System
5000
™
to act as a Modbus Slave on a
Modbus network. The Output writes to the
designated internal register according to
the format specified and shown under the
Type column. The designated register can
be read by an external Modbus Master.
More information regarding Modbus can
be found in Chapter 8 of this manual.
Modbus Slave (Output)
The Switched 12V Out Port is located
between the SDI-12 ports and Power
connectors on the front panel.
This Output will only appear in the Add
Output list if the Switched 12V mode is
set to Task-Selected within the System
Settings. By default, the Switched 12V
excitation is set to be always on. To save
power or have finer control over the port,
the Task-Selected option can be chosen
to determine the exact times the port will
be active. More information regarding
the Switched 12V modes can be found
in Chapter 10 under the System Settings
section.
Switched 12V Out
The Switched 12V port can be set active based on a condition or simply set to turn on during that
scan period.
Mode
The excitation port will turn On and Off based on the Condition. The output will stay On until
the Condition returns false (non-positive). Logical Conditions, such as HG > 0, are suggested,
as they return a simple true or false response. Calculations that return a positive or negative
number are also allowed, evaluating any positive number as true and zero or less as false.
Normal