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PT PT200MI Instruction Manual

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Innovative Measurement Electronics
PT200MI
Digital Indicator
Instruction Manual
Rev. 2023/06.1

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Summary of Contents for PT PT200MI

  • Page 1 Innovative Measurement Electronics PT200MI Digital Indicator Instruction Manual Rev. 2023/06.1...

  • Page 2: Table Of Contents

    10.7 Single material batching control software (optional)..........34 10.8 Standard ASCII code table..................37 10.9 PT200MI function list....................38 Note. Items marked (optional) are optional features that can be purchased with the PT200MI Refer to our web site at www.ptglobal.com for the latest information and revisions.

  • Page 3: Description

    1. DESCRIPTION 1.1 INTRODUCTION The PT200MI is a general weighing indicator, employing the latest technology for reliability, best performance, quality assurance and cost effective design which includes many functions. The PT200MI is suitable for all kinds of applications such as hopper and platform weighing.

  • Page 4: Features

    PT200MI 1.3 FEATURES - Suitable for all strain gauge load cells; - Clear and stable 13mm, 6 digit LED display; - Gross weight or net weight can be selected; - Display step width is selectable in multiples of 1, 2 or 5;...

  • Page 5: Specificatons

    PT200MI instruction manual 2. SPECIFICATIONS 2.1 GENERAL 1. Mains supply : 110VAC, 220VAC±10%, 50/60Hz 2. Power consumption : 9 VA 3. Operating temperature : -5ºC to 50ºC(23ºF to 122ºF) 4. Relative Humidity : 90%(non-condensing) 5. Weight : Approx 0.45 kg 2.2 DIGITAL SECTION...

  • Page 6: Hi/Lo Set Point Output (Optional)

    2.9 Single Material Batching Option This option requires a Hi/Lo setpoint option to be fitted. This option requires factory configuration and must be ordered at the time of purchase of the PT200MI and Hi/Lo option. Settings for Final, Zero Band, Optional Preliminary, Preliminary, Free Fall.

  • Page 7: Operation

    50%. Ground the PT200MI via the power cable to the rear terminal and ensure a good ground connection. Do not ground directly to other equipment. Analogue input/output signals are sensitive to electrical noise. Do not bind these cables together as it could result in cross-talk interference.

  • Page 8: Indicator And Keys

    PT200MI 4. INDICATOR AND KEYS 4.1 INDICATOR Indicator On/Off : Press the MODE key for 3 seconds. Function mode : Enter by pressing MODE and G/N keys for 2 seconds, “FUNC” is displayed. Calibration mode : Enter by pressing MODE and TARE keys for 2 seconds, “CAL” is displayed.

  • Page 9: Rear Panel Description

    PT200MI instruction manual 4.3 REAR PANEL DESCRIPTION Input 3 Input 2 Common for Comparator/Batching options TxD/+ for RS232/RS485 options LL/ZB for Comparator/Batching options RxD/- for RS232/RS485 options LO/FF for Comparator/Batching options Common for RS232/RS485 options HI/PL for Comparator/Batching options Output for Analogue options...

  • Page 10: Function Setting

    30000 (F6=16) 3.0000 30.000 300.00 40000 (F6=17) 4.0000 40.000 400.00 50000 (F6=18) 5.0000 50.000 500.00 60000 (F6=19) 80000 (F6=20) To aid setting of the PT200MI a tables below show settings of F4, F5 and F6 for various capacities and increments.

  • Page 11: Data Setting

    PT200MI instruction manual MULTIPLIER F4 0.1 (F4=2) 1 (F4=1) 10 (F4=0) DIVISION (F5=0) (F5=1) (F5=2) (F5=0) (F5=1) (F5=2) (F5=0) (F5=1) (F5=2) Increment or step 500 (F6=0) 50.0 50.0 50.0 1000 (F6=1) 100.0 100.0 100.0 1000 1000 1000 1000 1200 (F6=2) 120.0...
  • Page 12 4 = 5% 5 = 6% 6 = 7% 7 = 8% 8 = 9% 9 = 10% Note: In the normal weighing mode, the PT200MI can be zeroed with a reading within the range 1% to 10% of maximum capacity by pressing ZERO key.
  • Page 13 00 ~ 99 Note: This parameter will be activated only for the RS485 option. The ID code must not be the same as any other PT200MI which connected to the same master device. ID = 00, only single device communication.

  • Page 14: Function Setting Using The Rs232/Rs485 Port (Optional)

    <CR><LF> and receiving a subsequent response from the PT200MI. If an invalid parameter is sent the PT200MI responds NO? <CR><LF> and a correct entry must be made or N<CR><LF> sent to move to the next setting. When the correct parameter has been sent sending N<CR><LF> moves to the next function.
  • Page 15 Note that this is the maximum displayed reading without the decimal point showing. If there is any error in the maximum capacity, step width and multiplier, the error message “ERROR 1” will be sent out, PT200MI will return to 5.2.4. 5.2.8 RS232/RS485 BAUD RATE...
  • Page 16 PT200MI 5.2.9 UNIT Transmit Response [string] UNIT [string] <CR><LF> <CR><LF> Options for [string] <SP>t = ton kg = kg (Note <SP> is a single space required before the t) to move to the next setting. Z.RANGE [num] <CR><LF>...
  • Page 17 PT200MI instruction manual 5.2.14 ID CODE (only applicable if RS485 option is fitted) Transmit Response [num] ID. NO. [num] <CR><LF> <CR><LF> Options for [num] 2 digit number 00 to 99 to move to the next setting. PEAK HOLD OFF <CR><LF>...
  • Page 18 <CF><LF> to return to normal weighing. <CR><LF> Note: When maximum capacity, division or multiplier is changed, the system must be calibrated again and it is also necessary to reset the Hi/Lo set point, the display of PT200MI will show “CAL1”.

  • Page 19: Calibration

    5. After span calibration it may be necessary to turn the PT200MI off and then back on again for the indicator to return to weighing mode.

  • Page 20: Error Codes During Calibration

    This value is entered as digits without decimal point and must be a multiple of the indicator step. If the PT200MI capacity is set to a capacity 100.00 and the previously entered mV/V was for a load of 50.00 then enter 5000 at this stage.
  • Page 21 PT200MI instruction manual 6.4.1 ENTER SERIAL CALIBRATION SETTING MODE 1 (by using a known weight) The PT200MI displays "CAL 1" throughout the serial setting mode. Transmit Response <ENQ>IDXX <ACK>XX (RS485) <CR><LF> (RS485) <CR><LF> CAL 1 CAL ZERO (RS232/RS485) <CR><LF> or <CR><LF>...
  • Page 22 PT200MI 6.4.2 ENTER SERIAL CALIBRATION SETTING MODE 2 (accuracy ~1% by using mV/V entry) The PT200MI displays "CAL 2" throughout the serial setting mode. Transmit Response <ENQ>IDXX <ACK>XX (RS485) <CR><LF> (RS485) <CR><LF> CAL2 CAL ZERO (RS232/RS485) <CR><LF> (RS232/RS485) <CR><LF>...

  • Page 23: Displayed And Output Values

    (4) Minimum display value = a value corresponding to the minimum input signal. The zero or dead load produces a signal above the minimum input signal with an empty scale. The PT200MI will produce a negative reading for loads below the zero load until the point the minimum input signal is reached and...

  • Page 24: Input/Output

    PT200MI 8. INPUT/OUTPUT 8.1 INPUT 8.1.1 INPUT CODE DESCRIPTION 0 = Function When the input terminal is open, the function setting and calibration procedure is locked. When the input terminal is shorted to INPUT COMMON, the function setting and calibration procedure is activated.

  • Page 25: Comparator Output (Optional)

    The normal operating output rating is 5VDC to 24VDC and the max. current is 0.3A. Isolate PT200MI from external controlled devices in order to reduce interference. A diode should be connected in parallel with the DC operated buffer relay to protect the circuitry.

  • Page 26: Comparator Set-Point Setting

    8.2.4 SETTING SET-POINTS Enter the comparator setting mode: Press and hold MODE , then press the ZERO key, 2 seconds later the PT200MI displays “SET”, a further 2 seconds later the gross annunciator begins flashing and the PT200MI displays “000000”...
  • Page 27 The sequence of set-point setting via serial port involves sending a series of parameters followed by <CR><LF> and receiving a subsequent response from the PT200MI. If an invalid parameter is sent the PT200MI responds NO? <CR><LF> and a correct entry must be made. When the correct parameter has been sent the PT200MI send N<CR><LF>...
  • Page 28 PT200MI Step 4: LOW LOW set-point setting (LL) Transmit Response [num] S-LL [num] <CR><LF> <CR><LF> Options for [num] The value of the required comparison weight. to move to the next setting. HH-S [NUM] <CR><LF> <CF><LF> to return to normal weighing.

  • Page 29: Rs232/Rs485 Input/Output (Optional)

    Select 4 or 8 times/sec at 4800 and 2400 baud. Command mode: In command mode a command is sent to the PT200MI and a response is received back. The commands vary upon the operational mode and are listed below. Command input...
  • Page 30 : kg = kilogram, t = ton 8.3.4 RS485 COMMUNICATION When the RS485 option is fitted multi-drop communications is possible to allow a single PC to communicate with up to 99 PT200MI indicators for display of weight or configuration. RS485 PT200MI...

  • Page 31: Bcd Data Output Interface (Optional)

    PT200MI instruction manual 8.4 BCD DATA OUTPUT INTERFACE (OPTIONAL) Refer to the appendix if installation of the option is required. 8.4.1 PIN DESCRIPTION Pin No. Signal Pin No. Signal BCD1 BCD20000 BCD2 BCD40000 BCD4 BCD80000 BCD8 BCD100000 BCD10 LO= Negative polarity...

  • Page 32: Analogue Output Interface (Optional)

    PT200MI 8.5 ANALOGUE OUTPUT (OPTIONAL) Refer to the appendix if installation of the option is required. Refer to the appendix for instructions on accessing the circuit boards, required for adjustment of the analogue options. 8.5.1 SPECIFICATION Resolution : 1/10000 Accuracy : 0.5% F.S...

  • Page 33: Dimensions

    PT200MI instruction manual 9. DIMENSIONS 96 mm 155 mm PT200MI MODE TARE ZERO Front view Side view +0.8 -0.0 Panel cutout...

  • Page 34: Appendix

    Supply voltage selection and optional serial interface or output boards are fitted by accessing the internal circuit boards of the PT200MI. To gain access disconnect the rear connectors and remove the 4 screws in each corner of the rear panel. Inside the circuit boards can be seen retained in guide slots in the aluminium casing extrusion.

  • Page 35: Installing The Rs232/Rs485 Serial Option

    ST62 (TERMINATOR) jumper on the main board (bottom left of the BCD board) should be set to “ON”, a 200Ω impedance matching resistor is added to the communication terminal. This applies only to the last PT200MI in the multi-drop arrangement, the one with ID=XX. (ref8.3.4) 10.3 INSTALLING THE COMPARATOR OUTPUT OPTION The comparator option board installs into the parent circuit board just below the RS232 or RS485 option board.

  • Page 36: Single Material Batching Control Software (Optional)

    10.7.1 KEYPAD SETTING STEPS Enter the single material batching setting mode: Press and hold MODE , then press the ZERO key, 2 seconds later the PT200MI displays “SET”, a further 2 seconds later the gross annunciator begins flashing and the PT200MI displays “000000”...
  • Page 37 The sequence of set-point setting via serial port involves sending a series of parameters followed by <CR><LF> and receiving a subsequent response from the PT200MI. If an invalid parameter is sent the PT200MI responds NO? <CR><LF> and a correct entry must be made. When the correct parameter has been sent the PT200MI send N<CR><LF>...
  • Page 38 PT200MI Step 5: Zero band setting (ZB) Transmit Response [num] ZERO BAND [num] <CR><LF> <CR><LF> Options for [num] The value of the final required batch weight. to move to the next setting. FINAL [NUM] <CR><LF> <CF><LF> to return to normal weighing.

  • Page 39: Standard Ascii Code Table

    PT200MI instruction manual 10.8 STANDARD ASCII CONTROL CODE TABLE Hexadecimal Character Decimal code Description code Null character Start of Header Start of Text End of Text End of Transmission Inquire Acknowledgment Bell Backspace Tab characters Line Feed Vertical Tab Form Feed...

  • Page 40: Pt200Mi Function List

    PT200MI 10.9 PT200MI FUNCTION LIST Function Customer’s files Description Default Exit setting F0 = 0 (0 – 1) Zero track time F1 = 0 No track (0 – 2) Zero track band F2 = 1 2 step width (0 –...

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