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EC305FP Biometric Time Clock

Theory of Operation
Operator Interface
Network Communications
Physical Interface
Manual (PDF)


The EC305FP is a special version of the Computerwise EC305 Ethernet Time Clock. Like the EC305, the EC305FP has a two line by 24 column LCD display and a 24-key membrane keypad for operator interaction, one of several ID card reading technologies and is uniquely equipped with a fingerprint reader used for validating that the employee corresponds to the ID number entered.

It typically has a built-in ID card reader to capture the employee ID number, although it is possible to use the keypad to enter the required ID number. The EC305FP connects to and communicates over a 10BaseT network using TCP/IP protocol (just as the EC305 does). All of the operational flexibility found in the EC305 is available in the EC305FP such as custom prompting sequences, custom data collection and validation, user defined scheduled alarms and relay out controls, and numerous other features.

Theory of Operation

The EC305FP time clock is programmed to function as a data collection device and is factory configured for attendance tracking. The EC305FP is additionally configured to require the operator to have his finger (or thumb) print read by the on-board fingerprint sensor and "validated" by comparing the print data read by the sensor to the print data that is stored on-board the EC305FP for that specific employee ID number.

This is a one-to-one "Go/No-Go" comparison and is not a search of the stored prints looking for a match. Prior to an employee being able to clock in/out, his fingerprint has to be enrolled on the EC305FP which is accomplished in the "Supervisory" mode. Once his enrolled fingerprint is accepted and stored internally in the EC305FP, he can then clock-in and out normally.


The EC305FP's fingerprint data file at any time can be downloaded/uploaded to/from the host WinPC computer and saved/restored to/from a file on the host for backup/restore purposes due to possible loss of the primary file in the clock.

An EC305FP configuration file that is uploaded into the unit prior to operation defines the prompt sequencing to be executed, the ID validation requirements (in this case fingerprint matching), and any scheduled alarm data. The default prompting logic can be modified by uploading a new configuration file into the clock. Collected data is stored in a flashfile on board the clock until downloaded to the host computer. Once the collected data has been successfully downloaded it is erased from the EC305FP's flashfile.

Operator Interface

The EC305FP includes an LCD display and a numeric keypad as the primary operator interface console. In addition, the standard clock include a barcode badge reader and can be optionally equipped with a mag-stripe card reader, PROX card reader or iButton reader for employee identification. An aux RS-232 port for connection of a serial input device is also available. Optional digital inputs with counters and software controlled relay outputs provide controls for break bells and door access control.


The EC305FP display is a two (2) line by twenty four (24) column LCD character display. It can display the 96 standard ASCII characters and 96 non-standard symbols in a 5 x 7 dot matrix font. The cursor position is identified by a blinking box and can be positioned by the prompt sequence. Display backlighting is available as an option for low light installations.


The EC305FP operator keyboard consists of a four (4) row by six (6) column membrane switch keypad. Two (2) shift keys (S1 and S2) are provided to generate upper case alpha characters and several special characters. The keypad also includes eight (8) functions keys (F1 - F8) which can be used to select different prompt sequences or for department code entry. A window overlay covers the keypad allowing the function key legends to be changed by inserting a legend sheet between the overlay and membrane switch array. The shift keys are only used to expand the number of ASCII characters that can be entered by the keypad.

Network Communications

The EC305FP has TCP/IP communications for data and configuration file transfers. Data files transfer to/from the clock using TFTP protocol. Access to the clock operating parameters can also be made over the network using the Telnet protocol. A Windows based utility program, ET200UP, is provided for TFTP and Telnet clients as well as the data download function.

TFTP Data Transfer

The EC305FP memory stores data in files which can be transferred over the network using a TFTP client program on a host computer. Captured data can be downloaded as a file to the host computer and will be deleted from the clock.

Telnet Command Mode

The EC305FP includes a command mode which can be accessed over the network with a standard Telnet client. Once a Telnet connection is established the host client can send commands to and receive responses from the clock. These commands can be used to set the time and date, change operating parameters, or retrieve status information.

Physical Interface

Power Supply

The EC305FP is powered by a 12vdc power adapter that plugs directly into a 120vac receptacle. Typical power consumption is less than 15 watts. Attaching optional input devices (laser scanners, card readers, etc.) can increase the power consumption slightly. Alternate power supplies can be used by connecting them via the EC305FP power jack.

Ethernet 10BaseT Jack (RJ-45)

Pin # Ethernet Signal Description
1 XXT+ Transmit Data +
2 XXT- Transmit Data -
3 XRC+ Receive Data +
4 NC
5 NC
6 XRC- Receive Data -
7 NC
8 NC

Barcode Scanner Input

Pin # Bar-code Signal
1 +5 Volts
2 Bar-code Data
3 Ground
4 NC
5 NC

Aux serial port (DB9M, DTE configuration)

Pin # RS-232 Signal Description Direction
1 DCD Data Carrier Detect Input
2 RXD Receive Data Input
3 TXD Transmit Data Output
4 DTR Data Terminal Ready Output
5 SG Ground Common
6 DSR Data Set Ready Input
7 RTS Request To Send Output
8 CTS Clear To Send Input
9 RI Ring Indicator Input


Barcode Input

The bar-code decoder input option allows one (1) or two (2) bar-code input devices to be interfaced to the EC305FP clock. Typically, the EC305FP is packaged in a wall mount enclosure which includes an integral slot reader. Decoded input is treated just like keyboard entered data and includes an automatic Enter (<CR>) code. The decoder will automatically discriminate and decode Code 39, Code 128, Interleave 2/5, Codabar, and UPC/EAN symbologies. Available input scanning devices include wands, slot readers, and wand emulating CCD or laser scanners.

Mag-Stripe Input

The mag-stripe decoder input option allows either a single or dual track magnetic card reader to be interfaced to the EC305FP. The input is treated just like keyboard entered data.

Aux Serial Input/Output

The auxiliary serial port option allows an external RS-232 device to be connected to the terminal. Input to the aux serial port is treated similar to keyboard entered data and can be used to attach a serial bar-code scanner, scale, or similar input device. Access to the aux serial port is provided by a DB9M connector configured as a DTE device.

Relay Output (for alarm or access control applications)

The EC305FP can be quipped with up to four (4) solid state relay (SSR) outputs. These outputs can be triggered by a valid operator response to a prompt or an alarm event. Each relay has a single "form A" contact rated at 10va (100vdc, 100ma.) maximum. If larger loads must be controlled, an external relay is required.



  • Bench-top Model: not available for the FP model
  • Wall-mount Model: 220mm wide x 225mm height x 92mm depth (8.6 x 8.8 x 3.6 in.)


  • Bench-top Model: not available for the FP model
  • Wall-mount Model: 1.82 Kg. (4 Lbs.)

Power Consumption

  • Standard Unit - 1.5W avg. / 2W max.

Temperature Ranges

  • Operating: 0°C to 60°C (32°F to 140°F)
  • Storage Temperature: -30°C to 70°C (-20°F to 158°F)


  • Aux Serial Port Input/Output (RS-232)
  • Bar-code decoder interface (single or dual)
  • Magnetic stripe card reader interface (Trk 1 and/or Trk 2)
  • PROX Card Reader Input
  • iButton Reader
  • Digital Inputs (4) with Counters
  • Relay control outputs (2 or 4)
  • Time and Attendance for Windows (TAW32)

See our other ethernet time and attendance tracking options

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