Yokogawa Data Acquisition with PID Control CX2000 - Manual (Page 115)

1-103
IM 04L31A01-01E
Explanation of Functions
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Measurement Remote Input (/A6R option or /A4FR option)
The actions shown in the table can be assigned to the contact signal or open collector
signal that is input to the 8 remote input terminals [REMOTE] of the measurement alarm
option terminal block.
Name of Action Detection Method Action
Start/Stop Edge Starts/stops data acquisition to the internal memory
Trigger Trigger Trigger used to start acquiring event data to the internal
memory (valid only when “event data” is specified to be
acquired to the internal memory and the trigger used to
start the acquisition is set to “external trigger”).
Alarm ACK Trigger Clears alarm display/relay output (valid only when the
operation of the alarm display or output relay is set to
“hold”).
Time adj Trigger Adjusts the internal clock to the nearest hour.
Math Edge Starts/stops computation (only on models with the
computation function (/M1)).
Math reset Trigger Resets computed data of measurement channels
(Resets the computed value to 0. Only when
computation is stopped on models with the computation
function option).
Manual sample Trigger Acquires instantaneous values of all channels to the
internal memory.
Load setup data 1 to 3 Trigger Loads the setup data file saved to the external storage
medium.
Messages 1 to 8 Trigger Displays message 1 to 8 on the trend display and stores
the message to the internal memory.
Snapshot Trigger Saves the screen image data to the external storage
medium.
Note
• The actions above can also be registered to the contact inputs of the control output terminal
block or the control DIO expansion terminal block.
• If the same action is performed using keys of the CX2000, communications, and contact
input, the newest operation/input is valid regardless of the method. This is also true between
control contact inputs and measurement remote inputs.
Method of Detecting the Remote Input Signal
The above actions are carried out on the rising or falling edge of the remote input signal
(edge) or the ON signal lasting at least 250 ms (trigger). For contact inputs, the remote
signal rises when the contact switches from “open to closed” and falls when the contact
switches from “closed to open”. For open collector signals, the remote signal rises when
the collector signal (voltage level of the remote terminal) goes from “high to low” and falls
when the collector signal goes “low to high.”
Rising and falling edges Trigger
Rising Falling 250 ms or more
VGA Output (/D5 option)
By using the RGB output, the CX2000 display can be displayed on a VGA monitor or
multi-sync monitor that can display VGA. For the connection procedure, see section 2.5,
“Connecting a Monitor to the VGA Output Terminal.”
24 VDC power supply for transmitter (/TPS4 option)
Provides 24-VDC power supply for up to four two-wire system transmitters. The
measured values of the transmitter correspond to a current signal of 4 to 20 mA on the
same cable. The signal can be connected to the measurement input terminal of the
CX2000 and displayed. For the connection procedure, see section 2.6, “Transmitter
Power Supply Wiring.”
1.20 Other Functions