METTLER TOLEDO Basic-S, AL/PL/PL-S balance Reference manual
Below you will find brief information for balance Basic-S, balance AL/PL/PL-S. The document describes the MT-SICS commands that can be utilized to operate a variety of METTLER TOLEDO balances using their data interface. It covers the basic features such as zeroing, taring, setting the weight unit and other settings, as well as more advanced features like calibration and testing functions.
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Reference manual
METTLER TOLEDO
Standard Interface Command Set
MT-SICS 0 version 2.3x
MT-SICS 1 version 2.2x
MT-SICS 2 version 2.3x for Basic-S (as from Software V 1.20) and for
AL/PL/PL-S balances
MT-SICS 3 version 2.2x for Basic-S (as from Software V 1.20) and for
AL/PL/PL-S balances
O/T
C
F
Cal/M enu
METT
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OLED
O off
On
O/T
C
Cal/M enu
METT
LER
TO
MT-SICS
1
Leerseite
2
Contents
Page
Basic information on data interchange with the balance
Commands and responses MT-SICS level 0
Commands and responses MT-SICS level 1
Commands and responses MT-SICS level 2 for Basic-S and for AL/PL/PL-S 32
Commands and responses MT-SICS level 3 for Basic-S and for AL/PL/PL-S 54
3
Overview of all commands
Inquiry of all implemented MT-SICS commands
Inquiry of MT-SICS level and MT-SICS versions
Inquiry of balance SW version and type definition number
Send weight value immediately and repeat
Weight display (Display show Weight)
Send weight value on weight change (Send and Repeat)
Inquiry/setting of tare weight value
4
Commands MT-SICS level 2 for Basic-S and for AL/PL/PL-S Page
Inquiry/setting of calibration setting
Initiate calibration according to current setting
Initiate calibration with external weight
Initiate calibration with internal weight
Send stable weight value and repeat after each deflection
Send stable weight value with currently displayed unit and repeat after each deflection
Send stable weight value after pressing ± (transfer) key
Send stable weight value with currently displayed unit
Send weight value with currently displayed unit immediately
Send weight value with currently displayed unit immediately and repeat 43
Send stable weight value with currently displayed unit after deflection 43
Inquiry/setting of the test function
Initiate test function in the current setting
Initiate test function with external weight
Initiate test function with internal weight
Inquiry/setting of weighing mode
Inquiry/setting of environment
Inquiry/setting of application selection
Inquiry/setting of current application
Inquiry/setting of value release
Commands MT-SICS level 3 for Basic-S and for AL/PL/PL-S
Start dynamic weighing immediately and transfer a result
Start dynamic weighing and transfer a result
Start dynamic weighing, transfer result and repeat
5
1.
Introduction
In weight measurements the demands on the readability and maximum capacity of balances and scales range from less than one microgram up to several hundred tonnes. To meet these and other requirements, METTLER TOLEDO offers an extensive range of balances and scales.
Many of the balances and scales used have to be capable of integration in a complex computer or data acquisition system.
To enable you to integrate balances in your system in a simple manner and utilize their capabilities to the full, most balance functions are also available as appropriate commands via the data interface.
Standardization of the commands
All new METTLER TOLEDO balances launched on the market support the standardized command set "METTLER TOLEDO Standard Interface Command Set" (MT-SICS), which is divided into 4 levels, depending on the functionality of the balance:
• MT-SICS level 0 Command set for the simplest balance, e.g. weighing cell.
• MT-SICS level 1 Extension of the command set for standard balances, i.e. balances without integrated applications.
• MT-SICS level 2 Extension of the command set by the commands specific for a balance family, e.g. MT-SICS level 2 for the Basic-S and for AL/PL/PL-S balance line.
• MT-SICS level 3 Application-specific commands as an extension of the command set, e.g. MT-SICS level 3 standard for dynamic weighing or as independent command set, e.g. MT-SICS for dryers.
A particular distinguishing feature of this concept is that the commands combined in MT-SICS level 0 and 1 are identical for all balances. Both the simplest weighing balance and a fully expanded weighing work station recognize the commands of MT-SICS level 0 and 1.
Investigations of various applications have shown that the vast majority of all system solutions can be handled with the commands of MT-SICS level 0 and 1. This means for you: if you restrict yourself to the commands of MT-SICS level 0 and 1, you can expand your system with additional balances from METTLER TOLEDO without having to change your application programs.
6
What do the commands of MT-SICS level 0 and 1 offer?
You can use the commands of MT-SICS level 0 and 1 to perform the following operations via the interface:
• request weighing results,
• tare the balance and preset the tare weight,
• zero the balance,
• identify MT-SICS implementation,
• identify the balance,
• reset the balance,
• control the display,
• control the keys for operation of the balance.
The commands of MT-SICS level 2
You can naturally use the data interface to exploit all functions available with your current balance or application. These additional functions are collected in the commands of MT-SICS level 2.
When creating your software application, please note that whereas the commands of MT-SICS level 2 have been specially tailored to your balance family.
Additional documentation on data interface
Settings of the interface such as baud rate, number of data bits, parity, handshake protocols and connector pin assignment are described in the operating instructions of the peripheral instrument or cable in question.
Version number of the MT-SICS
Each level of the MT-SICS has its own version number which can be requested with the command I1 from level 0.
This manual describes
MT-SICS level 0, version 2.3x
MT-SICS level 1, version 2.2x
MT-SICS level 2 for Basic-S balances version 2.3x
MT-SICS level 3 for Basic-S balances version 2.2x
You can use the command I1 via the interface to request the MT-SICS level and MT-SICS versions implemented on your balance.
Please make sure that the versions implemented on your balance agree with those listed above.
7
2.
Basic information on data interchange with the balance
Each command received by the balance via the data interface is acknowledged by a response of the balance to the transmitter.
Commands and responses are data strings with a fixed format, and will be described in detail in chapter 3.
2.1
Command formats
Commands sent to the balance comprise one or more characters of the ASCII character set.
Here, the following must be noted:
• Enter commands only in uppercase.
• The possible parameters of the command must be separated from one another and from the command name by a space (ASCII 32 dec., in this description represented as / ).
• The possible input for "text" is a sequence of characters of the 8-bit ASCII character set from
32 dec to 255 dec.
• Each command must be closed by C
R
L
F
(ASCII 13 dec., 10 dec.).
The characters C
R
L
F
, which can be inputted using the Enter or Return key of most entry keypads, are not listed in this description, but it is essential they be included for communication with the balance.
Example
Command to balance which writes Hallo into the balance display:
D / "Hallo" The command terminator C
R
L
F
is not shown.
Comment
The quotation marks " " must be inserted in the entry.
8
2.2
Response formats
All responses sent by the balance to the transmitter to acknowledge the received command have one of the following formats:
• Response with weight value
• Response without weight value
• Error message
2.2.1 Format of the response with weight value
A general description of the response with weight value is the following.
ID Status WeightValue Unit C
R
L
F
1 - 2 characters
1 character 10 characters 1 - X characters
ID Response identification.
Space (ASCII 32 dec.).
Status Status of the balance, see description of the commands and responses.
WeightValue Weighing result; shown as number with 10 digits, incl. decimal point and sign – directly in front of the first digit if value negative. The weight value appears right-aligned. Preceding zeros are not shown with the exception of the zero to the left of the decimal point. With METTLER
TOLEDO DeltaRange balances, outside the fine range the last decimal place is shown as a space.
Unit
C
L
R
F
Weight unit actually set under unit 1.
Carriage Return (ASCII 13 dec.).
Line Feed (ASCII 10 dec.).
Comment
C
R
L
F
will not be shown in this description.
Examples
Response with stable weight value of 0.256 g:
S / S ////// 0.256
/ g
Response with stable weight value outside the fine range:
S / S //// 4875.2
// g
9
2.2.2 Format of the response without weight value
A general description of the response without weight value is the following.
ID Status Parameters C
R
L
F
1 - 4 characters
ID
1 character
Status
Parameters
C
R
L
F
Response identification.
Space (ASCII, 32 dec.).
Status of the balance, see description of the commands and responses.
Command-dependent response code.
Carriage Return (ASCII 13 dec.).
Line Feed (ASCII 10 dec.).
Comment
C
R
L
F
will not be shown in this description.
Example
Response to D / "Hallo" when Hallo appears unabridged in the display: D / A.
10
2.2.3 Error messages
{ID|ç|ƒ}
There are three different error messages. The identification always comprises two characters.
ID
C
R
L
F
Error identification
Possible error messages are
ES Syntax error
ET
The balance has not recognized the received command.
Transmission error
The balance has received a "faulty" command, e.g. owing to a parity error or interface break.
Logical error EL
The balance can not execute the received command.
Carriage Return (ASCII 13 dec.).
Line Feed (ASCII 10 dec.).
Comment
C
R
L
F
will not be shown in this description.
2.2.4 Tips for the programmer
Command and response
You can improve the dependability of your application software by having your program evaluate the response of the balance to a command. The response is the acknowledgement that the balance has received the command.
Reset
To be able to start from a determined state, when establishing the communication between balance and system, you should send a reset command to the balance. When the balance or system is switched on or off, faulty characters can be received or sent.
Quotation marks " "
Quotation marks included in the command must always be entered.
11
3.
Commands and responses
The balance receives commands from the system computer and acknowledges the command with an appropriate response.
The following sections contain a detailed description of all commands of the command set in alphabetical order with the associated responses. Commands and responses are closed with
C
R
L
F
. These termination characters are not shown in the following description, but they must always be entered with commands or sent with responses.
3.1
Commands and responses MT-SICS level 0
The commands of MT-SICS level 0 are available with even the simplest balances which support the METTLER TOLEDO Standard Interface Command Set.
Command
Inquiry of all implemented MT-SICS commands
Inquiry of MT-SICS level and MT-SICS versions
Inquiry of balance SW version and type definition number
Send weight value immediately and repeat
Page
12
I0 – Inquiry of all implemented MT-SICS commands
Command I0 Send list of all implemented MT-SICS commands
Response I0
/
B
/ x1
/
"1.Command" x1 = number of the MT-SICS level
I0
/
B
/ x1
/
"2.Command"
: where the 1. Command belongs to.
2nd (next) command implemented
:
I0
/
A
/ x1
/
"last Command"
Last command implemented
I0
/
I The list cannot be sent at present as another operation is taking place
Example
Command I0 Send list of commands
Response I0 / B
/
0
/
"I0"
I0 / B
/
0
/
"I1"
:
:
:
I0 / B
/
0
/
"S"
:
:
I0 / B
/
0
/
"Z"
I0 / B
/
0
/
"@"
I0 / B
/
1
/
"D"
I0 / B
/
1
/
"DW"
:
:
I0 / A
/
3
/
I12
Level 0 command "I0" implemented
Level 0 command "I1" implemented
:
:
:
Level 0 command "S" implemented
:
:
Level 0 command "Z" implemented
Level 0 command "@" (reset) implemented
Level 1 command "D" implemented
Level 1 command "DW" implemented
:
:
(last command)
Comments
• The I0 command lists all commands implemented in the present software. Thus, there is no need of the supplement sheet delivered with the previous versions of this manual.
• All level 0 commands are listed in alphabetical order before all commands of level 1 etc.
This order corresponds to the order how the commands are described in this manual.
13
I1 – Inquiry of MT-SICS level and MT-SICS versions
Command I1 Inquiry of MT-SICS level and MT-SICS versions.
Response I1 / A / "x1" / "x2" / "x3" / "x4" / "x5" x1 = 0 Balance with MT-SICS level 0 (simplest balance) x1 = 01 Balance with MT-SICS level 0 and 1
(standard balance) x1= 012 Balance with MT-SICS level 0, 1 and 2
(standard balance with extensions) x1 = 03 Balance with MT-SICS level 0 and 3
(simplest balance with a special application) x1 = 013 Balance with MT-SICS level 0, 1 and 3
X2
X3
X4
X5
(standard balance with a special application) x1 = 0123 Balance with MT-SICS level 0, 1, 2, and 3 x1 = 3
(standard balance with extensions and a special application)
Application device with MT-SICS level 3
(not necessarily a balance)
Version of the implemented MT-SICS0 commands
Version of the implemented MT-SICS1 commands
Version of the implemented MT-SICS2 commands
Version of the implemented MT-SICS3 commands
I1 / I
Command understood, not executable at present.
Example
Command
Response
I1 Inquiry of MT-SICS level and versions.
I1 / A / "01" / "2.00" / "2.00" / "" / ""
01
2.00
2.00
Level 0/1 implemented
Level 0, version V2.00
Level 1, version V2.00
Comments
• In the case of the MT-SICS level, only fully implemented levels are listed. In other words, if it is not possible to implement all commands from a certain level, the level is not specified.
• In the case of the MT-SICS version, all levels are specified even those only partially implemented.
14
I2 – Inquiry of balance data
Command I2
Response I2 / A / "text"
I2 / I
Inquiry of balance data.
Balance data as "text".
Command understood, not executable at present.
Example
Command I2 Inquiry of balance type.
Possible responses
I2 / A / "PB8001-S / Standard / 8109.0
/ g"
I2 / A / "AB204-S / Standard / 210.0090
/ g"
Comments
• With DeltaRange balances, the last decimal place is available only in the fine range.
• The number of characters of "text" depends on the balance type.
I3 – Inquiry of balance SW version and type definition number
Command I3 Inquiry of balance SW version and type definition number.
Responses I3 / A / "text"
I3 / I
Balance SW version and type definition number as
"text".
Command understood, not executable at present.
Examples
Command
Response
I3 Inquiry of SW version number(s) and type definition number.
I3 / A / "1.05
/ 1.1.1.17.7"
1.05
Software version number
1.1.1.17.7 Type definition number
Comment
The first number (digits prior to the first space in the text string) is the SW version number. The second SW version number is optional, and depends on the balance type. The last number
(following the last space) is the type definition number for service purposes.
15
I4 – Inquiry of serial number
Command I4
Responses I4 / A / "text"
I4 / I
Inquiry of serial number.
Serial number as "text".
Command understood, not executable at present.
Example
Command I4 Inquiry of serial number.
Response I4 / A / "0123456789"
Comments
• The serial number agrees with that on the model plate and is different for every balance.
• The serial number can be used, for example, as a device address in a network solution.
• The response to I4 appears unsolicited after switching on and after the reset command (@).
I5 – SW-Identification number
Command I5
Responses I5 / A / "x"
I5 / I
Example
Command I5
Inquiry of SW-Identification number.
SW-Identification number as Text.
x: SW-Identification number.
Command understood, not executable at present.
Inquiry of SW-Identification number.
Response I5 / A / "12345678A"
SW-Identification number with index.
Comments
• The SW-Identification number is unique for every Software.
16
S – Send stable weight value
Command
Response
S Send the current stable net weight value.
S / S / WeightValue / Unit
Current stable weight value in unit actually set under unit 1.
S / I Command not executable (balance is currently executing another command, e.g. taring, or timeout as stability was not reached).
S / +
S / –
Balance in overload range.
Balance in underload range.
Example
Command
Response
S Send a stable weight value.
S / S ///// 100.00
/ g
The current, stable weight value is 100.00 g.
Comments
• The duration of the timeout depends on the balance type.
• To send the stable weight value in actually displayed unit, see 'SU' command in level 2
17
SI – Send weight value immediately
Command
Response
SI
S / S / WeightValue / Unit
Stable weight value in unit actually set under unit 1.
S / D / WeightValue / Unit
Nonstable (dynamic) weight value in unit actually set under unit 1.
S / I Command not executable (balance is currently executing another command, e.g. taring).
S / +
S / –
Send the current net weight value, irrespective of balance stability.
Balance in overload range.
Balance in underload range.
Example
Command
Response
SI Send current weight value.
S / D ///// 129.07
/ g
The current weight value is unstable (dynamic) and is
129.07 g.
Comments
• The response to the command SI is the last internal weight value (stable or dynamic) before receipt of the command SI.
• To send weight value immediately in actually displayed unit, see 'SIU' command in level 2
18
SIR – Send weight value immediately and repeat
Command
Response
SIR Send the net weight values repeatedly, irrespective of balance stability.
S / S / WeightValue / Unit
Stable weight value in unit actually set under unit 1.
S / D / WeightValue / Unit
Nonstable (dynamic) weight value in unit actually set under unit 1.
S / I Command not executable (balance is currently executing another command, e.g. taring).
S / + Balance in overload range.
S / – Balance in underload range.
Example
Command
Response
SIR Send current weight values at intervals.
S / D ///// 129.07
/ g
S / D ///// 129.08
/ g
S / S ///// 129.09
/ g
S / S ///// 129.09
/ g
S / D ///// 114.87
/ g
… The balance sends stable or nonstable weight values at intervals.
Comments
• SIR is overwritten by the commands S, SI, SR, @ and hardware break and hence cancelled.
• The number of weight values per second depends on the balance type.
• To send weight value in actually displayed unit, see 'SIRU' command in level 2
19
Z – Zero
Command
Response
Z
Z / A
Z / I
Zero the balance.
The following then holds: gross = net + tare = 0.
Zero setting performed, i.e. stability criterion and zero setting range complied with.
Zero setting not performed (balance is currently executing another command, e.g. taring, or timeout as stability was not reached).
Upper limit of zero setting range exceeded.
Lower limit of zero setting range exceeded.
Z / +
Z / –
Example
Command
Response
Z
Z / A
Zero.
Zero setting performed.
Comments
• The tare memory is cleared during zero setting.
• The zero point determined during switching on is not influenced by this command, i.e. the measurement ranges remain unchanged.
• The duration of the timeout depends on the balance type.
20
ZI – Zero immediately
Command
Response
ZI
ZI / D
ZI / S
ZI / I
Zero the balance immediately regardless the stability of the balance.
Re-zero performed under non-stable (dynamic) conditions.
Re-zero performed under stable conditions.
Zero setting not performed (balance is currently executing another command, e.g. taring).
Upper limit of zero setting range exceeded.
Lower limit of zero setting range exceeded.
ZI / +
ZI / –
Example 1
Command
Response
ZI
ZI / S
Zero immediately.
Zero setting performed, weight value was stable.
Example 2
Command
Response
ZI
ZI / D
Zero immediately.
Zero setting performed, weight value was dynamic (nonstable).
Comments
• The tare memory is cleared after zero setting.
• The zero point determined during switching on is not influenced by this command, i.e. the measurement ranges remain unchanged.
21
@ – Reset
Command @
Response
I4 / A / "text"
Resets the balance to the condition found after switching on, but without a zero setting being performed.
Serial number of the balance, the balance is ready for operation.
Example
Command
Response
@
I4 / A / "1114350697" Balance is reset, its serial number is 1114350697.
Comments
• All commands awaiting responses are cancelled.
• Key control is set to the default setting K / 1.
• The tare memory is reset to zero.
• The "reset" command is always executed.
• If the balance is on standby, it is switched on.
22
3.2 Commands and responses MT-SICS level 1
The commands of MT-SICS level 1 are available with all standard balances which support the
METTLER TOLEDO Standard Interface Command Set.
Command
Weight display (Display show Weight)
Send weight value on weight change (Send and Repeat)
Inquiry/setting of tare weight value
Page
23
D – Balance display
Write into balance display
Command
Response
D / "text"
D / A
D / R
Write text into balance display.
text appears unabridged left-aligned in the balance display marked by a symbol, e.g. *.
The end of the text appears in the balance display, the start is cut off. text is marked by a symbol, e.g. *.
D / I
D / L
Command not executable.
Command understood, parameter wrong or balance with no display.
Example
Command
Response
D / "HALLO"
D / A
Write "HALLO" into the balance display.
The full text "HALLO" appears in the balance display.
Clear balance display
Command D / ""
Response D / A
D / I
Clear balance display.
Balance display cleared, marked by a symbol, e. g. *.
Command not executable.
Comments
• A symbol in the display, e.g. * indicates that the balance is displaying an invalid weight value.
• The maximum number of characters of "text" visible in the display depends on the balance type.
DW – Weight display (Display show Weight)
Command
Response
DW
DW / A
DW / I
Switch main display to weight mode.
Main display shows the current weight value.
The command has been understood, but is not executable.
24
K – Key control
Commands
Response
K
K
K
K
K
K
K
/
/
/
/
/
/
/
1
2
3
4
A
I
L
When a key is pressed, execute the corresponding function, but do not send.
When a key is pressed, do not execute the corresponding function and send nothing.
When a key is pressed, do not execute the key function, but send the corresponding key code.
When a key is pressed, execute the corresponding function and send its function code.
If the corresponding function can not be executed immediately, the function code K / B / y for the start of the function and K / A / y or K / I / y for the end of the function are sent. This behavior applies to taring, zeroing, calibrating, testing, printing, etc.
If a function may not be executed, the function code K / I / y is sent.
Key control command understood and successfully executed.
Key control command understood but not executable at present, e.g. balance actually in menu or input mode.
Key control command understood, but command parameter wrong.
Response when K / 3 is active
K / C / x Key x was pressed briefly or key x was released after more than 2 seconds.
K / R / x Key x was pressed and held for around 2 seconds. This response repeats every 2 seconds as long as key x remains pressed.
The keys are coded as follows:
“/F
-> 0/T <- and On/Off: x = 1 x = 3
± and Menu:
1/10d
Example with an activated K
/
K / R / 4 Key 4 was pressed and held around 2 seconds.
K / C / 4 Key 4 was released.
x = 4 x = 2
25
Response when K / 4 is active
K / A / y Function y was released by pressing the correspondent key and successfully executed.
K / I / y Function y was released by pressing the correspondent key, but it could not be successfully executed, e.g. calibration was aborted by user.
K / B / y Function y was released and started, the execution needs time to complete. These functions are marked with an asterix (*).
After this response, either K / A / y or K / I / y follows.
The balance functions are coded as follows:
Calibration* tare/re-zero*
Data transfer to printing device*
Enter menu
Quit menu and save parameters
Quit menu without saving
Standby (instrument can be switched on with reset command)
Switch weight unit
Set factory setting y = 0 y = 2 y = 3 y = 4 y = 5 y = 6 y = 9 y = 10 y = 12
Command K / 4
Responses K / A
K / B / 1
K / A / 1
K / B / 1
K / I / 1
When a key is pressed, execute the corresponding function and send the function code as an acknowledgement.
Each time a key is pressed, immediate acknowledgement with the corresponding function code will be sent.
The taring function has been started -> taring active.
Taring completed successfully.
The taring function has been started -> taring active.
Taring not completed successfully, taring aborted.
Comments
• K / 1 is the factory setting (default value).
• K / 1 active after balance switched on and after the reset command
• Only one K command is active at any one time.
• A distinction must be made between key code K / 3 and function code K / 4. The key code is specific to the balance type, the function code corresponds to the above table.
26
SR – Send weight value on weight change (Send and Repeat)
Command
Response
SR / PresetValue / Unit
Send the current stable weight value and then continuously after every weight change greater or equal to the preset value a nonstable (dynamic) value followed by the next stable value, range = 1d to max. load.
SR If no preset value is entered, the weight change must be at least 12.5 % of the last stable weight value, minimum = 30d.
S / S / WeightValue / Unit
Current, stable weight value in unit actually set under until 1.
Weight change.
S / D / WeightValue / Unit
Dynamic weight value in unit actually set under until 1.
S / S / WeightValue / Unit
Next stable weight value in unit actually set under until 1.
S / I Command not executable (balance is currently executing another command, e.g. taring, or timeout as stability was not reached).
S / L Command understood, parameter wrong.
S / + Balance in overload range.
S / Balance in underload range.
Example
Command SR / 10.00
/ g
Response S / S ///// 100.00
/ g
S / D ///// 115.23
/ g
S / S ///// 200.00
/ g
Send the current stable weight value followed by every load change ≥ 10 g.
Balance stable.
100.00 g loaded.
Balance again stable.
Comments
• SR is overwritten by the commands S, SI, SIR, @ and hardware break and hence cancelled.
• If, following a nonstable (dynamic) weight value, stability has not been reached within the timeout interval, the response "S / I" is sent and then a nonstable weight value. Timeout then starts again from the beginning.
• The preset value must be entered in unit actually set under until 1.
27
T – Tare
Command
Response
T Tare, i.e. store the next stable weight value as a new tare weight value.
T / S / WeightValue / Unit
Taring performed, i.e. stability criterion and taring range complied with.
T
T
T
/
/
/
I
+
-
The tare weight value returned corresponds to the weight change on the balance in the unit actually set under unit 1 since the last zero setting.
Taring not performed (balance is currently executing another command, e.g. zero setting, or timeout as stability was not reached).
Upper limit of taring range exceeded.
Lower limit of taring range exceeded.
Example
Command
Response
T The balance is tared and has a value of 100.00 g in the tare memory.
T / S ///// 100.00
/ g
Comments
• The tare memory is overwritten by the new tare weight value.
• The duration of the timeout depends on the balance type.
• The function of the combined tare and zero setting key corresponds to the zero setting (Z) command of the interface.
• Clearing tare memory: see command TAC.
• Unit 1 is the weight unit displayed after the balance has been switched on.
28
TA – Inquiry/presetting of tare weight value
Inquiry of tare weight value
Command TA Inquiry of the tare weight value.
Response TA / A / TareWeightValue / Unit
Current tare weight value in unit actually set under until 1.
TA / I Current tare weight value can not be transfered at present as another operation is taking place.
Setting of tare preset value
Command TA / TarePresetValue / Unit
Entry of a tare preset value in unit actually set under unit 1.
Response TA / A / WeightValue / Unit
Entry accepted, returned value rounded to actual readability. The balance display shows the net value referred to the inputted tare value.
TA / I Taring not performed (balance is currently executing another command, e.g. zero setting, or timeout as stability was not reached).
TA / L Command understood, parameter wrong.
Example
Command
Response
TA / 100.00
/ g
TA / A ///// 100.00
/ g
Tare.
The balance has 100.00 g in the tare memory.
Comments
• The tare memory will be overwritten by the preset tare weight value.
• The inputted tare value will be automatically rounded by the balance to the current readability.
• The preset value must be entered in the unit actually set under unit 1.
• The taring range is specified to the balance type.
29
TAC – Clear tare value
Command
Response
TAC
TAC / A
TAC / I
Clear tare value.
Tare value cleared, 0 is in the tare memory.
Command not executable (balance is currently executing another command, e.g. zero setting, or timeout as stability was not reached).
30
TI – Tare Immediately
Command
Response
TI Tare immediately, i.e. store the current weight value, which can be stable or non stable (dynamic), as tare weight value.
TI / S / WeightValue / Unit
Taring performed, stable tare value.
The new tare value corresponds to the weight change on the balance since the last zero setting.
TI / D / WeightValue / Unit
Taring performed, non-stable (dynamic) tare value.
TI / I
Taring not performed (balance is currently executing another command, e.g. zero setting).
TI / L
The command is not executable, e.g. certified version of balance.
TI / +
Upper limit of taring range exceeded.
TI / -
Lower limit of taring range exceeded.
Example
Command
Response
TI Tare immediately.
TI / D ///// 117.57
/ g
The tare memory holds a non-stable (dynamic) weight value.
Comments
• The tare memory will be overwritten by the new tare weight value.
• After a non-stable (dynamic) stored tare weight value, a stable weight value can be determined. However, the absolute value of the stable weight value determined in this manner is not accurate.
• The stored tare weight value is sent in the unit actually set under unit 1.
• The taring range is specified to the balance type.
31
Command
3.3 Commands and responses MT-SICS level 2 for Basic-S and for
AL/PL/PL-S
The commands of MT-SICS level 2 are supported by all Basic-S and for AL/PL/PL-S balances.
Inquiry/setting of calibration setting
Initiate calibration according to current setting
Initiate calibration with external weight
Initiate calibration with internal weight
Send stable weight value and repeat after each deflection
Send stable weight value with currently displayed unit and repeat after each deflection
Send stable weight value after pressing ± (transfer) key
Send stable weight value with currently displayed unit
Send weight value with currently displayed unit immediately
Send weight value with currently displayed unit immediately and repeat 43
Send stable weight value with currently displayed unit after deflection
Inquiry/setting of the test function
Page
Initiate test function in the current setting
Initiate test function with external weight
Initiate test function with internal weight
Inquiry/setting of weighing mode
Inquiry/setting of environment
Inquiry/setting of application selection
Inquiry/setting of current application
Inquiry/setting of value release
32
C0 – Inquiry/setting of calibration setting
Inquiry of calibration setting
Command
Response
C0 Inquiry of the calibration setting.
C0 / A / x1 / x2 / "WeightValue / Unit"
C0 / I
Weight value and unit specify the value of the weight for an external calibration requested from the user via the display (see command C2). The unit corresponds to the factory setting of unit
1, e.g. gram (g) with standard balances or carat (ct) with carat balances respectively.
With internal calibration, neither weight value nor unit appears.
x1 Calibration mode x1=0 Mode = Manual
The calibration can only be triggered manually.
A change in the ambient conditions has no influence on the initiation of the calibration procedure.
x1=1 Mode = Auto, status display AutoCal or Cal not activated.
The sensors built into the balance monitor the ambient conditions; however, the change is so small that a calibration is not necessary.
x1=2 Mode = Auto, status display "AutoCal" or "Cal" flashes.
The sensors built into the balance have determined a considerable change in the ambient conditions. The balance requests a calibration or at least a test (see
"TST" command).
x2 Calibration weight x2=0 Internal weight (factory setting) x2=1 External weight
The current value of the external weight can be seen in the menu of the balance under "Calibration" (see
Operating instructions).
The calibration status and the current setting of the calibration can not be transferred at present as another operation is taking place.
33
Example
Command
Response
C0 Inquiry of status and setting of the calibration.
C0 / A / 2 / 1 / " /// 100.000
/ g"
Current setting of mode is "Auto".
The ambient conditions of the balance have changed so much that the balance requests a calibration (x1=2) with the external weight (x2=1).
For a calibration initiated with the command C2, a weight of
100.000 g is needed.
Setting the calibration setting
Command C0 / x1 / x2 Set calibration setting.
x1 Calibration mode x1=0 Mode = Manual
A change in the ambient conditions has no influence on the initiation of the calibration procedure.
x1=1 Mode = Auto, the sensors built into the balance monitor the ambient conditions. When a considerable change in the ambient conditions is determined, the status display
AutoCal or Cal will be activated; this means the balance will ask for calibration.
Response C0
C0
C0
/
/
/
A
L
I x2 Calibration weight x2=0 Use internal weight (factory setting) x2=1 Use external weight
The current value of the external weight can be seen in the menu of the balance under "Calibration" (see Operating instructions.
Calibration setting set.
Calibration setting can not be set, e.g. parameter wrong or certified version of the balance or no internal calibration weight.
Commend not executable as the balance is, e.g. being tared.
Example
Command
Response
C0 / 0 / 1
C0 / A
Set calibration setting to manual and external.
Calibration setting set.
Comments
• Setting x1=1 and x2=0 corresponds to the menu setting "FACT" under "Calibration".
• For balances without internal calibration weight, only x1=0 and x2=1 is possible.
34
C1 – Initiate calibration according to current setting
Command
First response
Further responses
C1
C1
C1
C1
/
/
/
B
I
L
C1 / "text"
C1 / A
C1 / I
Start calibration in the current setting.
The calibration procedure has been started.
Wait for second response (see Comment)
A calibration can not be performed at present as another operation is taking place. No second response follows.
Calibration operation not possible, e.g. with certified balance.
No second response follows.
Weight request with external calibration.
Calibration has been completed successfully.
The calibration procedure was aborted as, e.g. stability not attained or wrong weights loaded.
Example
Command
Response
C1
C1 / B
C1 / " ////// 0.00
/ g"
Start calibration.
Calibration operation started.
Prompt to unload the balance.
C1 / " /// 2000.00
/ g"
C1 / " ////// 0.00
/ g"
C1 / A
Prompt to load calibration weight 2000.00 g.
Prompt to unload the balance.
Calibration completed successfully.
Comment
Commands sent to the balance during the calibration operation are not processed and responded to in the appropriate manner until the calibration is at an end.
35
C2 – Initiate calibration with external weight
Command
First response
Further responses
C2
C2
C2
C2
/
/
/
B
I
L
C2 / "text"
C2 / A
C2 / I
Initiate external calibration. Inquiry of the weight used by means of the C0 command.
The calibration procedure has been started.
A calibration can not be performed at present as another operation is taking place. No second response follows.
Calibration operation not possible, e.g. as a calibration with an external weight is not admissible (certified balance). No second response follows.
Prompt to unload or load the balance.
Calibration has been completed successfully.
The calibration procedure was aborted as, e.g. stability not attained or wrong weight loaded.
Example
Command
Response
C2
C2 / B
C2 / " ////// 0.00
/ g"
Start calibration.
Calibration operation started.
Prompt to unload the balance.
C2 / " /// 2000.00
/ g" Prompt to load calibration weight 2000.00 g.
C2 / " ////// 0.00
/ g"
C2 / A
Prompt to unload the balance.
Calibration completed successfully.
Comment
Commands sent to the balance during the calibration operation are not processed and responded to in the appropriate manner until the calibration is at an end.
36
C3 – Initiate calibration with internal weight
Command
First response
C3
C3 / B
C3 / I
C3 / L
Further responses
C3 / A
C3 / I
Initiate internal calibration.
The calibration procedure has been started.
Wait for second response.
A calibration can not be performed at present as another operation is taking place. No second response follows.
Calibration operation not possible, e.g. as internal weight missing. No second response follows.
Calibration has been completed successfully.
The calibration was aborted as, e.g. stability not attained or the procedure was aborted with the C key.
Example
Command
Response
C3
C3 / B
C3 / A
Initiate internal calibration.
Calibration operation started.
Calibration completed successfully.
Comment
Commands sent to the balance during the calibration operation are not processed and responded to in the appropriate manner until the calibration is at an end.
37
I11 – Balance type
Command
Response
I11
I11 / A / "text"
I11 / I
Inquiry of model designation of the balance.
"text" represents the model designation.
The model designation can not be transfered at present as another operation is taking place.
Example
Command
Response
I11
I11 / A / "PB3002-S"
Inquiry of model designation of the balance.
The balance is a PB3002-S.
Comment
A sequence of maximum 20 characters is possible as "text".
PWR – Power on/off
Command
Response
PWR / x
PWR / A
PWR / A
I4 / A / "text"
PWR / I
Switch balance on or off.
x = 0 Set balance to standby mode.
x = 1 Switch balance on.
Balance has been switched off successfully
Balance with the serial number according to text has been switched on succesfully (see also I4 command).
Command not executable as the balance is, e.g. being tared.
Command understood, parameter wrong PWR / L
Comment
If balance is powered by battery, a PWR / 0 will switch off the balance completely (not only standby), so it is not possible to communicate with the balance until it is switched on by key again.
38
SNR – Send stable weight value and repeat after each deflection
Command SNR / PresetValue / Unit
Send current stable weight value in Unit 1 and repeat after each deflection greater or equal to the preset value (see Comment).
Response S / S / WeightValue / Unit
Current stable weight value (1. value)
S / S / WeightValue / Unit
: Next stable weight value after preset deflection (2 value) etc.
:
S / I
S / L
S / +
S / –
Command not executable (balance is currently executing another command, e.g. taring, or timeout as stability was not reached).
Command understood, parameter wrong
Balance in overload range.
Balance in underload range.
Example
Command
Response
SNR / 50 / g
S / S ////// 12.34
/ g
S / S ////// 67.89
/ g
Comment
The preset value is optional. If no value is defined, the deflection limit depends on balance readability as follows: readability
0.01 mg
0.1 mg
0.001 g
0.01 g
0.1 g
1 g min. deflection
0.01 g
0.1 g
1 g
1 g
1 g
5 g
39
SNRU – Send stable weight value with currently displayed unit and repeat after each deflection
Command SNRU / PresetValue / Unit
As the SNR command, but with currently displayed unit.
Response S / S / WeightValue / Unit
Current stable weight value (1. value)
S / S / WeightValue / Unit
: Next stable weight value after preset deflection (2 value) etc.
:
S / I
S / L
S / +
S / –
Command not executable (balance is currently executing another command, e.g. taring, or timeout as stability was not reached).
Command understood, parameter wrong
Balance in overload range.
Balance in underload range.
Example
Command
Response
SNRU / 50 / g
S / S ////// 12.34
/ g
S / S ////// 67.89
/ g
Comment
The preset value is optional. If no value is defined, the deflection limit depends on balance readability as follows: readability
0.01 mg
0.1 mg
0.001 g
0.01 g
0.1 g
1 g min. deflection
0.01 g
0.1 g
1 g
1 g
1 g
5 g
40
ST – Send stable weight value after pressing ± (transfer) key
Inquiry of the status
Command
Responces
ST
ST / A / 0
ST / A / 1
ST / I
Inquiry of actual status of the ST function.
Function inactive, no weight value is sent when ± (transfer key) is pressed.
Function active, weight value is sent each time when ± (transfer key) is pressed.
The current status can not be transfered at present as another operation is taking place.
Set ST function
Command ST / 1
Responces
ST / 0
ST / A
ST / I
ST / L
Send the current stable net weight value each time when ±
(transfer key) is pressed (see "S" command with MT-SICS level 0).
Stop sending weight value when transfer key is pressed.
Command understood and successfully executed.
Command understood, but not executable at present, e.g. balance is currently executing another function.
Command understood, parameter wrong.
Example
Command
Responces
ST / 1 Activate ST function
ST / A Command executed
When ± (transfer key) is pressed:
S / S //// 123.456
/ g Current net weight is 123.456g.
Comment
• ST / 0 is the factory setting (default value).
• ST function is not active after switching on and after the reset command.
41
SU – Send stable weight value with currently displayed unit
Command
Response
SU As the "S" command, but with currently displayed unit.
S / S / WeightValue / Unit
Command executed.
S / +
S / -
S / I
Balance in overload range.
Balance in underload range.
Command not executable as balance is, e.g. being tared.
Example
Command
Response
SU
S / S ////// 12.34
/ lb
SIU – Send weight value with currently displayed unit immediately
Command
Response
SIU As the "SI" command, but with currently displayed unit.
S / S / WeightValue / Unit
Command executed, stable.
S / D / WeightValue / Unit
Command executed, dynamic.
S / +
S / -
S / I
Balance in overload range.
Balance in underload range.
Command not executable as balance is, e.g. being tared.
Example
Command
Response
SIU
S / D ////// 12.34
/ lb
42
SIRU – Send weight value with currently displayed unit immediately and repeat
Command
Response
SIRU As the "SIR" command, but with currently displayed unit.
S / S / WeightValue / Unit
Command executed.
S / D / WeightValue / Unit
Command executed.
S / + Balance in overload range.
S / Balance in underload range.
S / I Command not executable as balance is, e.g. being tared.
Example
Command
Response
SIU
S / D ////// 12.34
/ lb
SRU – Send stable weight value with currently displayed unit after deflection
Command
Response
SRU As the "SR" command, but with currently displayed unit.
SRU / WeightValue / Unit
S / S / WeightValue / Unit
Command executed.
S / D / WeightValue / Unit
Deflection.
S / + Balance in overload range.
S / Balance in underload range.
S / I Command not executable as balance is, e.g. being tared
Example
Command
Response
SRU
S / S ////// 12.34
/ lb
S / D ////// 13.88
/ lb
S / S ////// 15.01
/ lb
43
TSTO – Inquiry/setting of the test function
Inquiry of the test function setting
Command
Responses
TST0 Inquiry of the setting for the test function.
TST0 / A / x / "WeightValue / Unit" x=0 The internal weight is used for the test.
TST0 / I x=1 The external weight is used for the test.
Weight value / Unit Value of the external weight currently set that is requested in the test from the balance user via the display.
The current setting of the test function can not be transferred at present as another operation is taking place.
Set test configuration
Command TST0 / x
Responses TST0 / A
TST0 / L
TST0 / I
Set test configuration of the balance.
x = 0 Test with internal weight.
x = 1 Test with external weight.
Test configuration set.
Wrong parameter or no internal calibration weight.
Command not executable as the balance is, e.g. being tared.
Example
Command
Response
TST0 Inquiry of current setting for the test and the value of the external test weight.
TST0 / A / 1 / ""
The current setting corresponds to the test with an external weight.
For a test initiated with the TST2 command (see below), an external weight of 2000.00 g is needed.
Comments
• There is no possibility to set the test weight, therefore the weight value is empty.
• With an internal test, no weight value appears.
44
TST1 – Initiate test function in the current setting
Command
First response
Further responses
TST1 Start test function in the current setting.
TST1 / B The test procedure has been started.
Wait for next response (see Comment).
TST1 / I The test function can not be executed at present as another operation is taking place. No second response follows.
TST1 / L Test not possible. No second response follows.
TST1 / "text"
Prompt to unload and load the balance.
TST1 / A / "WeightValue / Unit"
Test procedure completed successfully.
Value with unit corresponds to the measured test weight.
No unit is specified if the test has been performed with the internal weight.
TST1 / I
The test procedure has been aborted as, e.g. stability was not attained or wrong weights were loaded.
Comment
Commands sent to the balance during the test procedure are not processed and responded to in the appropriate manner until the test procedure is at an end.
45
TST2 – Initiate test function with external weight
Command
First response
Further responses
TST2 Start test function with external weight. Inquiry of the weight used by means of the TST command (see above).
TST2 / B The test procedure has been started.
Wait for next response (see Comment).
TST2 / I The test function can not be executed at present as another operation is taking place. No second response follows.
TST2 / L Test not possible. No second response follows.
TST2 / "text"
Prompt to unload and load the balance.
TST2 / A / "WeightValue / Unit"
Test procedure completed successfully.
Weight value with unit corresponds to the measured test weight.
The test procedure has been aborted as, e.g. stability was not attained or wrong weights were loaded.
Example
Command
Response
TST2 / I
TST2 / B
Initiate test with external weight.
The test procedure could be started.
TST2 / " ////// 0.00
/ g"
Prompt to unload the balance.
TST2 / "Load"
Prompt to load the test weight.
TST2 / " ////// 0.00
/ g"
Prompt to unload the balance.
TST2 / A / " ////// 100.01
/ g"
External test completed successfully.
Comment
Commands sent to the balance during the test procedure are not processed and responded to in the appropriate manner until the test procedure is at an end.
46
TST3 – Initiate test function with internal weight
Command
First response
Further responses
TST3 Start test function with built-in weight.
TST3 / B The test procedure has been started.
Wait for next response (see Comment).
TST3 / I The test function can not be executed at present as another operation is taking place. No second response follows.
TST3 / L Test not possible. No second response follows.
TST3 / A / "WeightValue"
TST3 / I Test procedure completed successfully.
Value corresponds to the deviation from the value of the internal weight.
The test procedure has been aborted as, e.g. stability was not attained or wrong weights were loaded.
Example
Command
Response
TST3 Initiate test with internal weight.
TST3 / B The test procedure could be started.
TST3 / A / " ////// 0.01"
The difference to the specified value is 0.01.
Comment
The commands received immediately after the first response are not processed and responded to in the appropriate manner until after the second response.
47
M01 – Inquiry/setting of weighing mode
Command
Response
M01
M01 / A / x
M01 / L
Command
M01 / I
M01 / x
Response
Example
M01 / A
M01 / L
M01 / I
M01 0 → M01 A
Inquiry of weighing mode.
x: Weighing
0 = normal weighing
1 = dosing
3 = robust / checkweighing
Parameters are missing, the command can thus not be executed.
Command not executable.
Setting of weighing mode.
See Inquiry.
Command executed.
Parameters wrong (value range, …).
Command not executable.
Setting of weighing mode to normal.
M02 – Inquiry/setting of environment
Command
Response
M02
M02 / A / x
M02 / L
Command
M02 / I
M02 / x
Response
Example
M02 / A
M02 / L
M02 / I
M02 1 → M02 A
Inquiry of environment.
x: environment
0 = very stable
2 = standard
4 = very unstable
Parameters are missing, the command can thus not be executed.
Command not executable.
Setting of environment.
See Inquiry.
Command executed.
Parameters wrong (value range, …).
Command not executable.
Switching on environment.
48
M03 – Inquiry/setting of AutoZero
Command
Response
M03
M03 / A / x
M03 / L
Command
M03 / I
M03 / x
Response
Example
M03 / A
M03 / L
M03 / I
M03 1 → M03 A
Inquiry of AutoZero.
x: Weighing
0 = AutoZero is switched off
1 = AutoZero is activated
Parameters are missing, the command can thus not be executed.
Command not executable.
Setting of AutoZero.
See Inquiry.
Command executed.
Parameters wrong (value range, …).
Command not executable.
Switching on AutoZero function.
49
M21 – Inquiry/setting of unit
Command
Response
M21
M21 / B / Des / Unit
M21 / A / Des / Unit
M21 / L
M21 / I
Inquiry of unit.
Des: Designation of unit
0 = unit 1, to MT-SICS
1 = Display unit
Unit: 0 = g
1 = kg
2 = t
3 = mg
4 = microgram
5 = carat
6 = Newton
7 = pounds
8 = ounces
9 = troy ounces
10 = grain
11 = penny weight
12 = Momme
13 = Mesghal
14 = Tael Hong Kong
15 = Tael Singapore
16 = Tael Taiwan
17 = Tical
18 = tola
19 = baht
Parameters are missing, the command can thus not be executed.
Command not executable.
50
Command
Response
M21 / Des
M21 / A
M21 / L
M21 / I
/ Unit Setting of unit(s).
See Inquiry.
Command executed.
Parameters wrong (value range, …).
Command not executable.
Examples M21 0 1
M21
→ M21 A
Setting of unit 1 to “kg”.
M21 B 0 1
Inquiry of unit, unit 1 = “kg”.
M21 A 1 5
Inquiry of unit, unit 2 = “ct”.
Comments
• All S commands are given in Unit 1 according to the definition of the MT-SICS.
• You can only select units that can be changed in the menu.
51
M25 – Inquiry of application selection
Command
Response
Examples
M25
M25 / B / No / “Name”
M25 / B / …
M25 / A / No / “Name”
M25 / L
M25
M25
/ I
Inquiry of application selection.
No: Number of application
Name: Name of application
Parameters are missing, the command can thus not be executed.
Command not executable.
→ M25 B 1 “Weighing”
M25 B 2 “…”
: :
M25 A 6 “Dynamicweighing manual”
M26 – Inquiry/setting of current application
Command
Response
M26
M26 / A / x
M26 / L
Command
M26 / I
M26 / x
Inquiry of actual current application.
x: Number of application
Parameters are missing, the command can thus not be executed.
Command not executable.
Response
Example
M26 / A
M26 / L
M26 / I
M26 3 → M26 A
Setting application number.
x: Number according to appl. list (command M25).
Command executed.
Parameters wrong (value range, …).
Command not executable.
Application 3 is activated.
Comment
Application number: Number of the application according to the application list (command
M25).
52
M29 – Inquiry/setting of value release
Command
Response
M29
M29 / A / x
Command
Response
Example
M29 /
M29 / A
M29 / L
M29 / I
M29 3
L
M29 / I
M29 / x
Inquiry of value release.
x: value release
0 = very stable
2 = standard
4 = very unstable
Parameters are missing, the command can thus not be executed.
Command not executable.
Setting of value release.
See inquiry.
Command executed.
Parameter wrong (value range, …).
Command not executable.
→ M29 A
Setting of value release to "reliable".
53
3.4 Commands and responses MT-SICS level 3 for Basic-S and for
AL/PL/PL-S
The commands of MT-SICS level 3 Basic-S standard are supported by the standard version of all Basic-S and for AL/PL/PL-S balances, see also response to the I2 command from MT-SICS level 0.
Command
Start dynamic weighing immediately and transfer a result
Start dynamic weighing and transfer a result
Start dynamic weighing, transfer result and repeat
Page
54
SM0 – Cancel SM2 and SM3 commands
Requirement
Command SM0
Response
SM0 / A
SM0 / I
SM0 / L
The SM0 command can be used only if the application
"Dyn A" or "Dyn M" has been activated in the menu.
Cancel the standby for the automatic start of a dynamic weighing activated by the SM2 and SM3 commands.
Standby for the automatic start has been cancelled.
The command can not be executed at present as another operation is taking place.
The application "Dyn A" or "Dyn M" is not set, the command can thus not be executed.
55
SM1 – Start dynamic weighing immediately and transfer a result
Requirement
Command
First response
Second response
The SM1 command can be used only if the application
"Dyn A" or "Dyn M" has been activated in the menu.
SM1 Balance immediately starts a dynamic weighing and transfers the result after elapse of the weighing time (WeighTime).
SM1 / A The dynamic weighing has been started, wait for second response. During the weighing operation, i.e. until the second response, no further commands can be executed.
SM1 / I The command can not be executed at present as another operation is taking place (e.g. dynamic weighing in progress).
No second response follows.
SM1 / L The application "Dyn A" or "Dyn M" is not set, the command can thus not be executed. No second response follows.
SM / * / WeightValue / Unit
Weight value corresponds to the mean value of all measured values determined by the balance during the weighing time.
The unit corresponds to the current weight unit in the display.
SM / I
SM / +
SM / -
The dynamic weighing has been aborted, e.g. with the "C" key.
Abort, overload during the integration.
Abort, underload during the integration.
Example
Command
Response
SM1 Start a weighing immediately and transfer the result.
SM1 / A Command understood, result follows.
SM / * / / / / / / 23.76
/ g
Result of the dynamic weighing is 23.76 g.
Comments
• The balance does not perform stability or plausibility checks for the start.
• Initiation of start via the weight change can be implemented by first activating an SR or SIR command and evaluating the weighing results.
• With the TI and SM1 commands, the balance can be used in unstable surroundings in which stable results are no longer achieved (e.g. in fume cupboards with powerful ventilation).
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SM2 – Start dynamic weighing and transfer a result
Requirement
Command
First response
Second response
SM2
The SM2 command can be used only if the application
"Dyn A" or "Dyn M" has been activated in the menu.
Balance starts a dynamic weighing after the minimum load is exceeded and transfers the result via the interface after elapse of the weighing time.
SM2 / A The dynamic weighing has been started, wait for second response. During the weighing operation, i.e. until the second response, no further commands can be executed.
SM2 / I The command can not be executed at present as another operation is taking place (e.g. dynamic weighing in progress).
No second response follows.
SM2 / L The application "Dyn A" or "Dyn M" is not set, the command can thus not be executed. No second response follows.
SM / * / WeightValue / Unit
Weight value corresponds to the mean value of all measured values determined by the balance during the weighing time.
The unit corresponds to the current weight unit in the display.
SM / I
SM / +
SM / –
The dynamic weighing has been aborted, e.g. with the "C" key.
Abort, overload during the integration.
Abort, underload during the integration.
Example
Command
Response
SM2 Start a dynamic weighing after minimum load "MinWeight" exceeded and transfer the result.
SM2 / A Command understood, result follows.
SM / * / / / / / / 24.30
/ g
Result of the dynamic weighing is 24.30 g.
Comments
• The SM2 command can be active at the same time as the other send commands (SI, SIR).
• The single start standby is cancelled by the SM0 and @ commands before start of the weighing.
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SM3 – Start dynamic weighing, transfer result and repeat
Requirement
Command
First response
Second response
The SM3 command can be used only if the application
"Dyn A" or "Dyn M" has been activated in the menu.
SM3 Balance starts a dynamic weighing automatically after the set minimum load is exceeded and transfers the result via the interface after elapse of the weighing time.
The renewed start standby is restored each time the weight drops below the weight value "MinWeight".
SM3 / A The dynamic weighing has been started, wait for second response. During the weighing operation, i.e. until the second response, no further commands can be executed.
SM3 / I The command can not be executed at present as another operation is taking place (e.g. dynamic weighing in progress).
No second response follows.
SM3 / L The application "Dyn A" or "Dyn M" is not set, the command can thus not be executed. No second response follows.
SM / * / WeightValue / Unit
Weight value corresponds to the mean value of all measured values determined by the balance during the weighing time.
SM3
SM
SM
/
/
/
+
–
I
Unit corresponds to the current weight unit in the display.
Further results follow when the start condition is again met.
The dynamic weighing has been aborted, e.g. with the "C" key.
Abort, overload during the integration.
Abort, underload during the integration.
58
Example
Command
Response
SM3 Start a dynamic weighing when weight drops below the minimum load "MinWeight", transfer the result and repeat the process.
SM3 / A Command understood, results follows.
SM / * / / / / / / 25.83
/ g
Result of the first dynamic weighing is 25.83 g.
SM / * / / / / / / 22.91
/ g
.
Result of the second dynamic weighing is 22.91 g.
.
SM / * / / / / / / 24.05
/ g etc.
Comments
• The SM3 command can be active at the same time as the other send commands.
• The recurring establishment of the start standby is cancelled by the SM0, SM1, SM2 and @ commands.
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4.
Special features
Parameter values after switching balance off/on
The commands of the standard command are seved on the permanent memory of the balance. This means that all values changed via the interface are saved when the balance is switched off.
Several commands in succession
If several commands are sent in succession without waiting for the corresponding responses, it is possible that the balance confuses the sequence of command processing or ignores entire commands.
Weight unit of weight value
In response strings with a weight value, unit always signifies the unit actually set under unit 1 in the menu of the balance (exeptions see SU, SIU, SIRU and SRU commands (MT-SICS level 2)).
METTLER TOLEDO DeltaRange balances
If the fine range of DeltaRange balances has been exceeded at the time of transmission, the balance sends a weight value as response in which the tenth character is a space.
Repeat rate and timeout
The repeat rate with repeat commands and the duration of the timeout (time-limit function) depend on the balance type, see technical data of the balance in question.
60
5.
An example
The following simple formula weighing application shows the data interchange between the computer with the formula weighing program and the balance.
A substance (S = 55 g) comprising components K1 = 100 g and K2 = 21 g needs to be weighed into a beaker.
If too much or too little of the first component is weighed in, the target weight of the second component should be adjusted so that the ratio of the two components remains the same.
The user is guided by the balance display and acknowledges his actions with the tare key.
Command
Response off
On
O/T
C
F
Cal/M enu
METTLER TOLEDO
@
Reset balance.
I2 / A / "PB3002-S / R / Standard / 3100.00
/ g"
K / 3 Disable key function and report each keystroke.
K / A
D / "BEAKER"
Prompt "(load) BEAKER" appears in the display.
D / A
K / C / 5
Response to the prompted text.
Acknowledges pressing of the tare key.
T Tare weight on the balance.
T / S / / / / / 70.00
/ g
Beaker weighs 70.00 g.
D / "C1 100g"
Prompt, add component 1 = 100 g.
61
Command
Response off
On
O/T
C
F
Cal/M enu
METT
LER T
OLED
O
D / A
K / C / 5
Response to the prompted text.
Acknowledges pressing of the tare key.
S
Send target weight of component 1.
S / S / / / / / 105.00
/ g
Target weight of component 1 missed by 5 g.
T Tare weight on the balance.
T / S / / / / / 55.00
/ g
Contents of the tare memory, now corresponds to gross weight.
D / "C2 / 21 / g"
Prompt, add component 2 = 21 g.
D / A
K / C / 5
Response to the prompted text.
Acknowledges pressing of the tare key.
D / "Sub / 76 / g"
Display "76 g substance weighed in".
D / A Response to the "Display" command.
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6.
What if...?
Tips from actual practice when the communication between the system (computer) and the balance does not function.
Establishing the communication
Switch the balance off with the corresponding "off" key and then on again with the "on" key.
The balance must now send identification string I4, e.g. I4 / A / "0123456789".
If this is not the case, check the following points.
Connection
For bidirectional communication, at least three connecting lines are needed:
• Data line from the balance (TxD signal with RS232 interface).
• Data line to the balance (RxD signal with RS232 interface).
• Signal ground line (SG with RS232 interface).
Make sure that all these connections are in order. Check the connector pin assignment of the connection cables.
Interface parameters
For the transmission to function properly, the settings of the following parameters must match at both the computer and the balance:
• Baud rate (send/receive rate)
• Number of data bits
• Parity bit
Check the settings at both devices.
Handshake
For control of the transmission, in part separate connection lines are used (CTS/DTR). If these lines are missing or wrongly connected, the computer or balance can not send or receive data.
Check whether the balance is prevented from transmitting by handshake lines (CTS or DTR).
Set the parameter "protocol" for the balance and the peripheral device to "No Handshake" or
"none". The handshake lines now have no influence on the communication.
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P11780447
Subject to technical changes.
Printed on 100 % chlorine-free paper.
For the sake of our environment.
© Mettler-Toledo GmbH 2003 11780447B Printed in Switzerland 0309/2.12
Mettler-Toledo GmbH, Laboratory & Weighing Technologies, CH-8606 Greifensee, Switzerland
Phone +41-1- 944 22 11, Fax +41-1-944 30 60, Internet: http://www.mt.com
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Key Features
- Standardized command set
- Support for various balance models
- Zeroing and taring functionality
- Calibration and testing features
- Weight unit setting and other customizations