Mark-10 BG012 User manual

Series BG

DIGITALFORCEGAUGES

User's Guide

User'sGuide

TABLE OF CONTENTS

GENERAL-SECTION1 ....................................................................2

Controls ................................................................................2

Orientation ............................................................................2

Mounting ...............................................................................3

POWER-SECTION2........................................................................3

CONFIGURATION-SECTION3 .........................................................3

FILTERS- SECTION4 .......................................................................6

EXTERNALTRIGGERMODE-SECTION 5 .......................................6

SETPOINTS -SECTION6.................................................................7

AVERAGEMODE-SECTION7.........................................................7

GAUGECONTROL LANGUAGE-SECTION 8...................................8

OUTPUTS-SECTION 9 ...................................................................10

RS-232................................................................................10

MitutoyoBCD......................................................................10

Analog.................................................................................10

I/Oconnector pin diagram ...................................................10

CALIBRATION- SECTION10 ........................................................... 11

SPECIFICATIONS-SECTION 11 ..................................................... 11

General ............................................................................... 11

Capacityxgraduation.......................................................... 11

Dimensions .........................................................................12

WARRANTY- SECTION12 .............................................................12

Series BG

GENERAL

Controls

Six keys on the front panel are used for all functions and control of the instrument.

Some have more than one function, depending on the mode of operation. The main

functions are labeled above the keys and the secondary functions are below the keys

in smaller type. In the list below the secondary functions are in parenthesis. For a

detailed description of the secondary functions see Section 3.

POWER(ENTER) Turns power on and off

UNITS ( ) Selects units of measurement

ZERO ( ) Zeroes any tare value (up to the full capacity of the

instrument) and clears the peak readings

DATA Initiates a data transmission sequence (if equipped with

the communication option)

MODE(ADVANCE) Switches the display between normal and peak modes

of operation

CLEAR(ESCAPE) Clears peak readings from memory

Orientation

In order to accomodate a variety of testing requirements, the orientation of the loading

shaft may be set up in either of the two positions shown below. In order to change the

loading shaft orientation, simply unscrew two screws on the back side of the housing,

separate the two housing halves, rotate one half 180° and reassemble.

Alternate orientation

(for stand mounting, etc.)

Section 1

ZERO

CLEAR

ESCAPE

CLEAR

ESCAPE

MODE

DATA

ADVANCE

ZEROUNITSPOWER

BGSERIES

MODE

DATA

ADVANCE

UNITSPOWER

SERIES

Loading shaft

Upright orientation

(as supplied)

User'sGuide

Mounting

POWER

The gauge is powered by a 7.2-volt NiCd rechargeable battery. Since batteries are

subject to self-discharge, it may be necessary to recharge the unit after a prolonged

period of storage. Plug the accompanying charger into the AC outlet and insert the

charger plug into the receptacle on the gauge. The gauge may be operated for 8-10

hours after approximately 16-18 hours of charging. Do not use chargers other than

supplied or instrument damage may occur.

There are three levels of low battery voltage indication. At the first level, the display

shows a steady "LO BAT" indicating approximately one hour of charge remaining. The

second level is indicated by a flashing "LO BAT". At the third level, the whole display

except the "LO BAT" indicator will flash for three seconds after which time the gauge

will turn itself off. This prevents the instrument from working at voltages too low for

reliable operation.

CONFIGURATION

The Series BG gauges have several features with programmable options allowing

many user-specified choices. In order to access the configuration menu, perform the

following:

1. Turn off the gauge

2. Press and hold MODE

3. Turn on the gauge

4. Release MODE

Gauge shown mounted

on Model TSC test stand Recommended use of a dowel pin

Section 2

BGSERIES

BOTTOM PLATE

0.187 [4.75]Ø

DOWEL PIN

MOUNTING PLATE

0.125 [3.2]

Section 3

Series BG

The software version number will be displayed for a short time followed by "FLtA". The

following secondary functions of keys are used during the configuration process.

ADVANCE Step through menu choices

ENTER Select a menu choice

ESCAPE Quit any function (no change)

&Increment or decrement displayed values

The following list shows all configuration options. Italics indicate factory settings.

FLtA - Analog filter

FA0 2.5 Hz RC filter disabled

FA 1 2.5 Hz RC filter enabled

FLTd - Digital filters

FC1 No filtering of current (displayed) readings

FC2 Average of 2 samples for each reading

FC4 Average of 4 samples for each reading

FC 8 Average of 8 samples for each reading

FP1 No filtering of peak readings

FP2 Average of 2 samples for each peak reading

FP4 Average of 4 samples for each peak reading

FP 8 Average of 8 samples for each peak reading

232- RS-232 settings

232d Output Disabled

232E Output Enabled

300 300 baud

600 600 baud

1200 1200 baud

2400 2400 baud

4800 4800 baud

9600 9600 baud

7-1E 7 data bits, 1 stop bit, even parity

7-1o 7 data bits, 1 stop bit, odd parity

7-2E 7 data bits, 2 stop bits, even parity

7-2o 7 data bits, 2 stop bits, odd parity

7-2n 7 data bits, 2 stop bits, no parity

8-1E 8 data bits, 1 stop bit, even parity

8-1o 8 data bits, 1 stop bit, odd parity

8-1n 8 data bits, 1 stop bit, no parity

8-2n 8 data bits, 2 stop bits, no parity

Ft F Full data (numeric + units)

Ft n Numeric data only

out - Outputs selection (other than RS-232)

SP d Set point outputs disabled

SPE Set point outputs enabled

User'sGuide

bcd d Mitutoyo BCD output disabled

bcd E Mitutoyo BCD output enabled

nPOL Mitutoyo readings without polarity (absolute value)

POL Mitutoyo readings with polarity; positive for compres-

sion, negative for tension

Et d External trigger disabled

EtE External trigger enabled in edge mode

EtL External trigger enabled in level mode

EtHL Data capture during high to low transition of trigger signal

EtLH Data capture during low to high transition of trigger signal

Aout - Automatic output (RS-232)

no Automatic output disabled

1 Every sample transmitted

2 Every 2nd sample transmitted

4 Every 4th sample transmitted

8 Every 8th sample transmitted

16 Every 16th sample transmitted

32 Every 32nd sample transmitted

64 Every 64th sample transmitted

128 Every 128th sample transmitted

AoFF- Automatic shutoff settings

no Disabled

1 1-minute automatic shutoff

5 5-minute automatic shutoff

10 10-minute automatic shutoff

20 20-minute automatic shutoff

30 30-minute automatic shutoff

init - Initial (default) settings

LB Pounds as default units

KG Kilograms as default units

N Newtons as default units

A Average mode at turn on

EtE/EtL External trigger mode at turn on

TC Real time display at turn on

PEAKT Peak tension display at turn on

PEAKC Peak compression display at turn on

A - Average mode settings

AE Average mode enabled

A d Average mode disabled

dEL Initial delay prompt

At Average time prompt

trF Trigger force value prompt

Series BG

CAL - Calibration. See Section 10.

FILTERS

For maximum flexibility in noise suppression and peak capturing ability of the instru-

ment, there are two types of filters available to the user: analog and digital.

The analog filter is a simple RC network with a cutoff frequency of 2.5 Hz and attenu-

ation of 20 dB/decade. It can be either turned on or off.

The digital filter utilizes the moving average technique in which consecutive readings

are "pushed" through a buffer and the displayed reading is the average of the buffer

contents. By varying the length of the buffer, a variable smoothing effect can be

achieved. The BG is equipped with a buffer which can hold up to eight readings. The

number of readings to be averaged can be set to 1,2,4 or 8. The selection of 1 will

disable the filter since the average of a single value is the value itself.

The analog and the digital filters should be disabled or set to their minimum

acceptable values for highest peak capture speed.

EXTERNAL TRIGGER MODE

This mode of operation is useful for measuring electrical contact activation force as

well as synchronization of multiple instruments for a "snap-shot" view of applied

forces.When thismode isenabled through

the configuration menu (see Section 3),

the MODE key will sequence through an

additional state which is indicated by the

flashing "C" or "T" indicator.

When in this mode, the instrument stops

updating the display when the trigger sig-

nal is applied. It is possible to capture the

reading with a normally open contact (high

to low transition of the trigger signal) or a

normally closed contact (low to high tran-

sition).

The display will show the captured reading until ZERO or CLEAR is pressed if the

"edge" mode is set. The "level" mode provides for the display to hold the reading only

until the trigger signal returns to its original state.

Please refer to the diagram for connection details and to Section 3 for configuration

information.

USER - SUPPLIED

SWITCH UNDER TEST

47K

+5V

GND

TRIG 3

GAUGE

Section 4

Section 5

User'sGuide

SET POINTS

This feature is useful for tolerance checking (GO/NO GO) or alarm indication in process

control applications. Two limits, high and low, are specified and stored in the non-

volatile memory of the instrument and all readings are compared to these limits. The

results of the comparisons are indicated

throughthe threeopen-collector outputs pro-

vided on the 9-pin connector, thus providing

"under", "in range" and "over" signaling.

These outputs can be connected to indica-

tors, buzzers or relays as required for the

application.

After the Set Point mode is enabled through

the configuration menu (see Section 3),

pressing the MODE key will sequence

through an additional step indicated by "SP" on the display. To enter or change the

values of the set points press ENTER. The high set point is displayed. Use and

keys to increase or decrease the value and MODE for changing between tension and

compression. When the desired value is displayed, press ENTER and repeat the above

steps for the low set point.After entering both values "donE" will appear on the display.

PressENTER to store the changesor ESCAPE to quit. Ineither case "SP" will appear on

the display and the ENTER key may be used for re-entering the set point change mode

or the MODE key for proceeding with the normal operation of the gauge.

AVERAGE MODE

This mode is used for obtaining an average force reading over a specified period of

time. Applications include measurement of peel force, muscle strength, frictional force

and any other tests requiring time-averaged readings. There are three user-program-

mableparameters associatedwith this

mode: trigger force, initial delay and

average time. The programming of

these parameters and the enabling of

theAverage mode are done during the

gauge setup. Please refer to the "Con-

figuration" section for more informa-

tion.

PressMODE until "A"is displayed and

thenCLEAR orZERO to begin testing.

The process of averaging begins as

soon as the programmed trigger force

is reached and is indicated by a flashing "A". The conclusion of the test is indicated by

an alternating "A" and the calculated value. The readings obtained during the initial

delay will not be part of the average, but the peak value is stored for later recall. A new

test may be started by pressing CLEAR or ZERO.

DELAY AVERAGE TIME

TIME

FORCE

PEAK

AVE

TRIGGER

FORCE

USER - SUPPLIED

40 ma MAX

AS ABOVE

SAME

2N3904

GAUGE

GND

4OUT

24V MAX

LOAD

Section 6

Section 7

AVG

Series BG

GAUGE CONTROL LANGUAGE

The instrument can be controlled by an external device through the RS-232 channel.

The following is a list of supported commands and their interpretations. All commands

must be terminated with a Carriage Return character (hex 0D) or with a Carriage

Return/Line Feed combination (hex 0D+0A). The gauge responses are always termi-

nated with a Carriage Return/Line Feed.

A Enable Average mode

AD Disable Average mode

AM Select Average mode (if enabled)

ATn Average time. n=0.1-300.0 seconds

DELn Initial delay. n=0.1-300.0 seconds

TRFn Trigger force. n=value (+ for compression, - for tension)

SP EnableSetPoint mode

SPD Disable SetPoint mode

SPHn High set point. n=value (+ for compression, - for tension)

SPLn Low set point. n=value (+ for compression, - for tension)

AOFFn Auto-shutoff. n=0,1,5,10,20,30 minutes. 0=always on

AOUTn Auto-transmit every nth reading. n=0,1,2,4,8,16,32,64,128. 0=disabled

LB Switch units to pounds

KG Switch units to kilograms

N Switch units to Newtons

G Switch units grams

ET Enable External trigger mode

ETD Disable External trigger mode

ETE Edge triggered External trigger mode

ETL Level triggered External trigger mode

HL Reading captured on a high to low transition

LH Reading captured on a low to high transition

CUR Current mode (real time display)

PT PeakTensionmode

PC PeakCompressionmode

CLR Clear peaks, start a new average, or external trigger test

Z Zero display and perform the CLR function

? Request the displayed reading

?C Request the current reading

?PT Request the peak tension reading

?PC Request the peak compression reading

?ET Request the reading obtained during the External trigger mode

?A Request the average reading obtained during the Average mode

FLTCn Digital filter for current (displayed readings). n=1,2,4,8

FLTPn Digital filter for peak readings. n=1,2,4,8

FLTAn Analog filter (2.5 Hz). n=1,2. 1=on, 0=off

Section 8

User'sGuide

FULL RS-232 transmission with units

NUM RS-232 transmission without units (only numeric values)

MIT Enable Mitutoyo output

MITD Disable Mitutoyo output

POL Mitutoyo outputs with polarity. (+ for compression, - for tension)

NPOL Mitutoyo outputs without polarity (absolute value)

PM Print/send data to a Mitutoyo compatible device

Sn Set output bit (open collector, pull to ground). n=0,1,2

Cn Clear output bit. n=0,1,2

Rn Read current status of output bit or level of input pin. n=0,1,2,3

SAVE Save current settings in nonvolatile memory

CAL Enter Calibration mode. See Section 10 for more information

LIST List current settings and status. Here is a typical LIST output:

V3.00;LB;PC;FLTC8;FLTP1;FLTA1;AOUT00;AOFF05;FULL;MIT;POL;B0

All fields are separated by ";". The first field shows the software version, the

last field shows the remaining battery power (B0=full charge, B3=minimum

power). All other fields show the status of settings and features using the

same abbreviations as the commands to set them.

Any detected errors are reported back by means of the following error codes.

*10 Illegal command

*11 Not applicable; e.g. SPHn command without enabling the set points

*21 Invalid specifier; e.g. AOFF2

*22 Value too large

*30 Calibration weight too high

*31 Calibration weight too low

*50 Communication error

*51 Command string too long

Following is a sample BASIC program illustrating the use of some commands. It switches

the units to kilograms and sets the display to zero. Press any key to get a reading on the

screen. Use "ESC" to exit the program.

10 CLS: OPEN "COM1:9600,N,8,1,RS,CS,DS,CD,LF" AS #1

20 PRINT #1 "KG"

30 PRINT #1 "Z"

40 PRINT "PRESS ANY KEY FOR READING OR <ESC> TO EXIT"

50 KEYPRS$=INKEY$: IF KEYPRS$="" THEN 50

60 IF KEYPRS$=CHR$(27) THEN SYSTEM

70 PRINT #1 "?"

80 LINE INPUT #1,A$

90 PRINT A$

100 GOTO 40

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