Contact Us


Graphic display/ touch panel type digital indicator for voltage and current output


Product outline

F377A is a digital indicator integrated with a voltage / current output type sensor that can display physical quantities such as pressure, load and torque in waveforms. It can be connected to the voltage of ±10V and the current of ±20mA. It is able to visually capture in waveforms the fluctuations in physical quantities which are difficult to capture by only numerical values.

With a maximum 2000 times per second for high-speed processing, it is also ideal for narrow value fluctuations and comes equipped with a HI/LO limit comparison function, various hold functions and judgment function. F377A is the best digital indicator for graders and testers used in results judgment of assembling work and auto machining.


Analog section
Voltage input -10 to +10V, Input impedance 1MΩ or more
Current input -20 to +20mA, Input resistance Approx.250Ω
Accuracy Non-linearity: within 0.02%/FS ±1digit (at a 10V or 20mA input)
Zero drift: within 0.2mV/℃ RTI or within 0.4μA/℃ RTI
Gain drift: within 0.01%/℃
Analog filter Low pass filter (-6dB/oct.)
Selectable at 30, 100, 300, 1000Hz
A/D converter Speed: 2000 times/sec.
Resolution: 24bit (binary)
Effective resolution: Approx. 1/30000 to 10V or 20mA input
Analog monitor output Output level: Approx. 0.6V per 1V input or approx. 0.3V per 1mA input
Load resistance: 2kΩ or higher
Display section
Display unit TFT color LCD module 3.5inch
Display area 71(W) mm×53(H) mm
Dot structure 320×240dot
Measured value 5 digits: -99999 to +99999, Sign: Minus sign on most significant digit
Setting section
Comparison functions HH, Hi, Lo, LL, Hysteresis, alarm Hi, alarm Lo, near zero, comparison timing, comparison output selection
Hold setting Hold mode, detection start level, detection time, level detection condition, sample point shift value, detection end level, average sample number, inflection point judging value, pre-inflection point slope detection time, post-inflection point slope detection time, inflection point shift, detection start condition, peak-valley detection min. value, peak-valley detection amplification
Graph setting Graph mode, Y-axis (load) start point, Y-axis (load) end point, X-axis (time) end point, plotting start level, interval time, plotting start level conditions
Calibration setting Analog input selection, zero calibration, equivalent input calibration, actual load calibration, calibration value selection, unit, minimum scale, digital offset, digital zero limit
Operation setting Digital filter, analog filter, backlight lighting time, language change, SI/F print, motion detect, zero tracking, monitor output filter, display color of measured value, B5 function selection, B6 OFF detection standby time, B8 OFF detection standby time, measured work input change, control input change, password
RS-232C setting Communication mode, baud rate, character length, stop bit, parity bit, delimiter, flow control
Extended comparison function Previous value comparison, relative value comparison
Extended hold function Double hold, auto reset change, hold value update, sample trigger change, hold cancel at DZ, hold END timing
Extended graph function Pre-trigger display
Extended operation function Digital filter characteristics, average time at DZ, RUN output format
Extended option BCD output data format
Hold section
Hold 1) Sample, 2) Peak, 3) Valley, 4) P-P, 5) Average, 6) Inflection Point, 7) Relative Maximum, 8) Relative Minimum, 9) Relative Difference, 10) Sample & Peak, 11) Sample & Valley, 12) Sample & P-P, 13) Sample & Average, 14) Sample & Inflection Point, 15) Sample & Relative Maximum, 16) Sample & Relative Minimum, 17) Sample & Relative Difference, 18) Peak & Valley, 19) Peak & P-P, 20) Valley & P-P, 21) Average & Peak, 22) Average & Valley, 23) Average & P-P, 24) Relative Maximum & Relative Minimum, 25) Relative Maximum & Relative Difference, 26) Relative Minimum & Relative Difference
Comparison function
  Higher Hi (HH) limit setting, Lower Lo (LL) limit setting, High (HI) limit setting, Low (LO) limit setting
Calibration value selection
  Stores up to 4 types of calibration value that can be interchanged
External signal
External output signal (8 points) HI/LO comparison output (HH, HI, OK, LO, LL)/ RUN output/ hold end output/ graph plotting end output
Vce=30V (max), Ic=30mA (max)
External input signal (10 points) Work selection input/ hold control input/ digital zero input (DZ)/ graph plotting control input/ calibration selection input
lc=10mA or lower
SIF 2-wire type serial interface
232 RS-232C communication interface
BCO BCD parallel data output interface (Option)
DAV D/A converter voltage output (Option)
DAI D/A converter current output (Option)
ODN DeviceNet interface (Option)
CCL CC-Link interface (Option)
General performance
Power supply voltage DC24V (±15%)
Power consumption 18W max
Operating conditions Temperature: operation temperature -10℃ to +40℃
Storage temperature -20℃ to +60℃
Humidity: 85%RH or lower (non-condensing)
Inrush current (typ) 55A, 1msec (cold start at room temperature)
Dimensions 96(W)×96(H)×138(D) mm (protruding areas are not included)
Weight Approx. 1.0kg
FCN series I/O connector (with cover) 1
Jumper cable 1
Operation manual 1
BCD output connector (when BCD output option is installed) 1
Mini driver
(when D/A converter option is installed)
DeviceNet connector
(when DeviceNet option is installed)
CC-Link connector
(when CC-Link option is installed)


BCO BCD parallel data output interface
DAV D/A converter voltage output
DAI D/A converter current output
CCL CC-Link interface
ODN DeviceNet interface

Optional accessories

CA372-I/O 3m end treatment 24-leads cable with FCN connector at one end
CA81-232X 1.5m miniDIN-D-Sub9p cross cable
CN50 FCN series I/O connector (with cover)
CN55 FCN series I/O connector (with diagonal cover)
CN60 Circular DIN 8p connector for RS-232C
CN51 BCD output connector
CN71 CC-Link connector
CN80 Analog I/O connector terminal
CND01 DeviceNet connector
GMP96×96 Rubber packing


Product catalogue(PDF)
F377A Product catalogue Download
Operation manual(PDF)

External dimention
Support tools
  • User registration is required to download operation manuals, external dimentions, support tools and software.
  • Acrobat Reader software from Adobe Systems is required to view PDF files.