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【 Mode switch 】： When the main interface 【 FN 】 is white.Press 【 OUT 】 to switch
the display position of output actual loop current value and engineering quantity
【 Activate independent 24V 】 : After this item is checked, the independent 24V
power supply starts to output from the (24V) port (IN-) port and the (COM) port, and
is not affected by input and output signal type switching
【 Activate Hold 】 : After this item is checked, each time the machine is turned on,
the 24V state will remain in the state of the last turn-on.Otherwise, every time you
turn on the 24V, you need to turn it on manually
【 4.6 】 24V Loop Detection
Select the 24V label left and right in the OUT signal type interface to enter this
function state.In this state, displays the output 24V loop current on the main
interface.Unlimited input signal detection type
（ 1 ） Loop 1: After starting the output, 24V voltage is output between the (OUT) port
and (COM) port, and the loop current is detected at the same time, and the current
is displayed in the "output 24V loop" area.This function can be used to test, for
example, pneumatic control valves or two-wire transmitters, supply them with 24V
power supply and detect current
（ 2 ） Loop 2: After activating the independent 24V power supply.The (IN-) port
outputs 24V voltage between the (24V) port and the (COM) port.It does not affect
the detection type of the input signal by the (IN+) port.In this case, select mA for the
input signal type.Then the (IN-) port can be combined with the (IN+) port to form a
24V output,And at the same time detect the current loop.The function is similar to
the circuit one
（ 3 ） Port (IN-) can be switched to independent 24V power supply function.It outputs
a single DC24V voltage, which is the (24V) port at this time.(24V) port used with
(IN+) to test two-wire transmitters
Notice!
①The difference between 24V loop detection and standalone 24V is:24V
loop detection output signal port to measure feedback current.
②Independent 24V port and output port can form 24V power supply,It
can also be combined with the input (+) to form a transmitter to supply
power and measure the feedback current of the transmitter
【 5.1 】 Engineering
When the signal value of analog quantity is used in the industrial field, it is
generally necessary to convert it into engineering quantity value.Therefore, in the
input and output settings of each signal, the instrument can set the upper and
lower limits of its engineering quantity and the upper and lower limits correspond-
ing to the signal value
5 、 EXTENSIONS
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