Cooper Instruments & Systems DFI 2555 SERIAL Use and care manual

DFI 2555 SERIAL
COMMUNICATIONS GUIDE
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CONTENTS
SAFETY INSTRUCTIONS............................................................................................................1
1.0 INTRODUCTION TO OPERATION WITH COMPUTER OR TERMINAL...............................1
2.0 SERIAL INTERFACE: RS-232C OR RS-485.........................................................................1
2.1 Introduction to the Interface ..........................................................................................................1
2.2 Key data for the serial interface.....................................................................................................2
3.0 COMMUNICATION WITH THE DFI 2555 ..............................................................................2
3.1 Connect DFI 2555 and computer ...................................................................................................2
3.2 Activation of the RS232C or RS485 interface...............................................................................3
4.0 COMMAND SET OF THE INTERPRETER ............................................................................3
4.1 Important conventions ...................................................................................................................3
4.1.1 Command structure .................................................................................................................4
4.1.2 Data-output Structure ..............................................................................................................4
4.2 Description of Individual Commands............................................................................................5
4.2.1 Setting-up of functions in the additional functions group ...................................................6
4.2.1.1 Setting of the RS232C interface parameters.......................................................................6
4.2.1.2 Setting of the RS485 interface parameters .........................................................................7
4.2.1.3 Querying for Device Identification/Firmware Status. ...........................................................8
4.2.1.4 Print functions .....................................................................................................................8
4.2.2 Setting-up of the Parameter-sets group................................................................................. 9
4.2.3 Define output format, measurement output ........................................................................ 11
4.2.3.1 Define output format..........................................................................................................11
4.2.3.2 Specify measurement output.............................................................................................12
4.2.4 Setting up the Adaptation group functions .........................................................................13
4.2.4.1 Setting up amplifier input...................................................................................................13
4.2.4.2 Choose filter settings.........................................................................................................14
4.2.4.3 Setting autocalibration.......................................................................................................16
4.2.5 Setting up the Calibration group functions .........................................................................17
4.2.5.1 Selecting the unit of measure............................................................................................17
4.2.5.2 Selecting the indication upper limit....................................................................................18
4.2.5.3 Setting zero value..............................................................................................................19
4.2.5.4 Set measuring range.........................................................................................................19
4.2.5.5 Tare...................................................................................................................................20
4.2.6 Setting up the Limit Value 1...4 group functions.................................................................20
4.2.7 Setting up the functions of the Peak value store group..................................................... 22
4.2.8 Setting up the functions of the Inputs/Outputs group........................................................23
4.2.8.1 Select amplifier input signal...............................................................................................23
4.2.8.2 Setting up the analog output .............................................................................................24
4.2.8.3 Setting up remote control ..................................................................................................25
4.2.8.4 Setting up assignment of the remotes............................................................................... 25
4.2.9 Setting up the Adaptation group functions .........................................................................26
4.2.9.1 Lock-control of the keys ....................................................................................................26
5.0 ABBREVIATION/COMMAND INDEX ..................................................................................27

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SAFETY INSTRUCTIONS
The instrument complies with the safety requirements of DIN EN 61010, Part 1 (VDE 0411, Part 1); Protection
Class I. When connecting the instrument please adhere to the factory-set main voltage. This is shown on the rear
panel of the housing (230V/115V, 48...60Hz). Since the instrument is not fitted with its own mains switch, the power
cable must not be connected direct to the mains supply. According to VDE Guidelines it must be possible to
disconnect these instruments from the mains by means of a switching device (e.g. a mains switch).
1.0 INTRODUCTION TO OPERATION WITH COMPUTER OR TERMINAL
The DFI 2555 panel amplifier for panel-frame mounting (in accordance with DIN 43700) is suitable for recording
and processing measured data from passive transducers in the field of industrial test-facility engineering and
manufacturing-process monitoring.
Its main features are:
•Attachable transducers: SG full and half bridges, inductive full and half bridges, piezoresistive transducers,
LVDTs, potentiometers
•10-character alphanumeric display
•Operation through touch-sensitive keypad; keys individually lockable
•2 peak value stores for maximum and minimum values, also envelope and instantaneous value
•4 limit monitors
•Parameter store for storing up to 8 data records
•Control I/Os (optocoupler-isolated)
This manual describes how to operate your DFI 2555 with a terminal or computer. It describes connection of a
computer via the RS232 for complete parameter input and scanning of measured data.
All steps required for setting up the instrument via the keypad, all information required for commissioning and all
menus are listed and described in a separate document, ”DFI 2555 User’s Guide”.
2.0 SERIAL INTERFACE: RS-232C OR RS-485
2.1 Introduction to the Interface
Through this serial interface data is transferred serially, one bit at a time. General properties are:
•Transmission speed relatively ”low”
•Requires in the simplest case a 3-core cable for bi-directional (duplex) transmission
•Only one device can be connected (point-to-point link)
Figure 1:Line level of the character Y with negative logic
A start bit is placed in front of each character (data byte). Then follow the data bits and a stop bit. Since data is
transferred sequentially, the speed of the transmitter must match that of the receiver. The number of bits per
second is termed the baud rate. A receiver’s exact baud rate is synchronized by the start bit for each byte
transmitted. Then follow the data bits, all of equal length. Once the stop bit has been reached, the receiver enters
its waiting state until reactivated by the next start bit. Data transmission is controlled by means of the software
handshake X-ON (DC1) and X-OFF (DC3). When the instrument is ready to transmit data, it sends the control
character X–ON (DC1) down the data line. If it cannot accept data, e.g. if its memory is full, the control character X–
OFF (DC3) is sent.

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2.2 Key data for the serial interface
Sampling rate 10 meas./s
Word length 8 bits
Stop bits 1*; 2
Parity odd, even* and none
Baud rate 300; 600; 1200; 2400; 4800; 9600*
* Factory setting
The interface configuration of the DFI 2555 (baud rate, parity and stop bit) must match that of the computer.
3.0 COMMUNICATION WITH THE DFI 2555
3.1 Connect DFI 2555 and computer
On the back of the instrument there is an RS232 serial interface for connecting a computer or terminal. For RS232
connection a connectorless cable (length 1.5m) and 9-pin subminiature socket* are supplied. Wiring and pin
assignment should be as illustrated below.
Figure 2: Computer / DFI 2555 connection
*accessories
Figure 3: The RS485/422 bus with and without serial converter
Interface socket
on the DFI 2555
DFI 2555
DFI 2555

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To connect the DFI 2555 to a computer proceed as follows:
•Connect both systems to the mains, leaving them switched off
•Connect the interface as shown in the diagram(s)
•The computer’s interface configuration (baud rate, data format) must match the DFI 2555’s basic setting. If it
does not, the interface configuration must be altered via the keypad (see DFI 2555 User’s Guide).
•Finally, switch both systems on.
When a printer is connected, a simple line printer operating at no more than 4 seconds per line is adequate. The
printout is in 12 columns. This corresponds to a line length of 132 characters.
3.2 Activation of the RS232C or RS485 interface
The Interpreter is activated by the following signal:
* CTRL R (DC2) computer operation without echo
Input of the control character puts the instrument into remote-operation mode; only the display’s output functions
can now be controlled. Computer operation without echo means that no command characters but only the data
generated are sent back to the DFI 2555. With the RS-232C interface each information-item generated is output as
soon as it is complete in the output buffer.
With the following command you can deactivate remote operation:
CTRL A (SOH); see also command DCL in Section 4.2.
4.0 COMMAND SET OF THE INTERPRETER
4.1 Important conventions
These conventions and general notes make working with the Interpreter’s commands easier for you.
Notation
•All commands can be input in lower or upper case.
Short commands
•Short commands consist of 3 to 5 characters and, depending on the command, a list of parameters separated
by commas.
e.g. BDR 6,2,1 (x)
Blanks
•Prefixed and following blanks in parameters are suppressed.
Command types
•Query commands – used for retrieving information – are identified by an added question mark (?)
e.g. BDR?
Responses
•The instrument’s responses given in the examples are shown in the User Manual in italics.
Command terminator
For input commands:
•(x) marks the command terminator. Permitted command terminators are: ”;”, LF, LFCR, CRLF
For output commands:
•(y) marks the command terminator. The command terminator is always CRLF.
I/O with numbers
•The numbers entered are changed to the relevant parameter’s numeric format
•Numbers are always output in fixed point format

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Serial interface
•With the RS232C interface, communication with a computer begins with the permitted control characters:
CTRL R or CTRL B and ends with CTRL A or the command DCL
•In the case of serial interfaces every command generates an output (response)
Acknowledgement
•Output commands – identified by a ? – always give rise to output data.
•Changing parameters
•If parameters affecting the measurement process itself are changed, calibration is performed after input; this
can take 1...3s.
Norms and standards
All commands used have a defined structure. There are essentially two types of command:
Set-up commands:
The DFI 2555 is set up through the computer.
Example: BDR6,2,1 (x)
0 (y)
The interface is set to 9600 baud, even parity and 1 stop bit.
Query commands:
Measured values or instrument settings are read from the
DFI 2555 and appear on the screen.
Example: BDR? (x)
6,2,1 (y)
The interface is set to 9600 baud, even parity and 1 stop bit.
4.1.1 Command structure
Short command Parameters End marker
TTT? p1,p2,...pn (x)
Example:
BDR? (x)
BDR Short commands as alphabetical characters (a...z)
? Only in query commands
p1,p2...pn Parameter values, consisting of sign (+/-) and numbers (0...9) or character strings (always in
quotation marks ” ”). A positive sign can be omitted.
, Separator
(x) Command terminator:
Line Feed (LF), Semi-colon (;) Carriage Return/Line Feed (CRLF) or Line Feed/Carriage
Return (LFCR)
CR ASCII characters: Carriage Return = decimal 13
LF ASCII characters: Line Feed = decimal 10
; ASCII characters: Semicolon = decimal 59
If an additional parameter - e.g. Parameter 2 - is omitted, at least the separator must be entered, e.g. ASA 1,,0(x)
If from a particular point all additional parameters are omitted, input can be concluded with the command
terminator.
4.1.2 Data-output Structure
q1,q2...qn (y)
Example 1:
IDN? (x)
HBM,MVD2555,0,P10 (y)
The responses sent by the DFI 2555 are printed in italics in this documentation (second line in the examples).
q1,q2...qn Signed numerical values,

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Character strings (always in quotation marks) or ’?’ as an error message
; Separator
(y) End of sequence (CRLF)
4.2 Description of Individual Commands
On the following pages each command is listed, its structure analyzed and explained with an example.
Command
The character string that must be input to operate the instrument, e.g.:
BDR
Syntax
Mandatory notation for a command, e.g.:
BDR p1,p2,p3 (x)
BDR p1,,p3 (x)
Parameters
The meaning of any parameters is explained:
e.g. if for command ASA parameter p1=1, this means:
1V bridge excitation voltage
Effect
e.g. explanation of how the instrument is set up.
Response
The instrument responds to your input. In operation via terminal this response appears on the screen
(always in the case of output commands).
Example
The example shows you the command entered and the instrument’s response. The response is always
shown in italics.
Command
DCL Device Clear
Terminate communication
Syntax: DCL (x) or with RS232C/RS485 control character
CTRL A (ASCII code 01 decimal).
Parameters: none
Effect: Remote control operation is terminated.
Response: none
Example: DCL(x)
Interpreter is no longer active.
Note:
After this command you can input a new command only after approx. 3s.
ESR? Standard Event Status Register
Output of the event-status register
Syntax: ESR? (x)
Parameters: none
Effect: Output of the contents of the standard event-status register (ESR) in decimal
equivalent.
The standard event-status register (ESR) is set if errors occur in communication.
Different causes of error set different bits, so that errors can be specified precisely.
Response: q1( y)
q1 8, 16 or 32

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All other bits are undefined.
4.2.1 Setting-up of functions in the additional functions group
4.2.1.1 Setting of the RS232C interface parameters
Command
BDR Baud rate
Setting of the RS232C parameters
Syntax: BDR p1,p2,p3 (x)
Parameters: p1 Baud rate
1 300
2 600
3 1200
4 2400
5 4800
6 9600
p2 Parity
0 None
1 Odd
2 Even
p3 Stop Bits
1 1 stop bit
2 2 stop bits
Transmission is always carried out with a character length of 8 bits.
Effect: The serial interfaces’ baud rate, parity bit and number of stop-bits are reset.
Response:
Acknowledgement Meaning
0 Command has been executed
? Error
Example: The DFI 2555 is being operated via the RS232C interface:
BDR6,2,1 (x)
0 (y)
The RS232C interface has been set to 9600 baud, even parity and 1 stop bit.
Command
BDR? Baud Rate Query
Output serial-interface parameters
Syntax: BDR?(x)
Parameters: none
Effect: The serial interface’s set baud rate, parity bit and number of stop bits are output.
Response: q1,q2,q3 (y)
q1 Baud rate
q2 Parity
q3 Stop bits
Example: BDR? (x)
6,2,1 (y)

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The interface has been set to 9600 baud, even parity and 1 stop bit.
4.2.1.2 Setting of the RS485 interface parameters
ADR Address
Assign RS485 address to the instrument
Syntax: ADR p1(x)
Parameters: p1 Device address
0…31
Effect: The command specifies the instrument’s RS485 address (see also command Sxx
on next page).
Response:
Acknowledgement Meaning
0 Command has been executed
? Error
ADR? Address Query
Output the device address
Syntax: ADR?(x)
Parameters: none
Effect: Output the device address.
The RS485 address can be set using the command ADR or via the keypad in the
additional functions under COMM.ADR.
Response: q1(y)
q1 Device address
0…31
Command
Sxx Select
Selects the DFI with the address xx
Syntax: S00(x) to S99(x)
Parameters: none
Effect: With the Select command you can actuate individually up to 32 MGC devices
connected to one RS422/485 bus. There are 32 usable addresses 0...31. With the
Select command these addresses are mapped again on to addresses 32...63 and
64...95, i.e. the commands S00, S32, S64 actuate the devices with the address 00, but
their effect on them is not the same. Addresses 96...99 are provided for special
functions.
Address Sxx Device with the
specified address Sxx
All other devices
Execute
Command
Responses Execute
Command
Responses
00…31 Yes Yes2) No No
32…63 Yes Yes2) Yes No1)
64…95 Yes No1) as for last address selected
96 No No No No
97,98 Yes No1) Yes No1)
993) Yes Yes2) Yes Yes2)
1) The response to the previous command is stored internally.
2) The stored response to the previous command is output subsequently.
3) Factory setting
Explanation:
S00...S31(x)
Only the instrument with the specified address receives commands, executes them and responds.
S32...S63(x)
All instruments receive all commands and execute them. Only the instrument with the specified address (S32 =
device 0) responds on behalf of all instruments.

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S64...S95(x)
The instrument with the specified address is accepted as a supplementary station that receives and executes all
commands but sends no responses.
S96(x)
All instruments wait for Select and send no responses.
S97 (x) or S98(x)
All instruments receive all commands and execute them, but send no responses.
S99(x)
All instruments on the bus are active, receive all commands and send responses (where there are multiple stations
this leads to collisions on the bus). Presetting of the devices after switching on (default).
Response: none
Example: S03(x)
Instrument with the address 03 executes all commands and responds.
S35(x)
All instruments on the bus receive and also execute all commands. Instrument with the address 03 (35-32)
responds on behalf of all instruments.
4.2.1.3 Querying for Device Identification/Firmware Status.
Command
AID? Amplifier Identification Query
Output of device identification
Syntax: AID?(x)
Parameters: none
Effect: Output of amplifier identification (firmware status)
Response: Character string (20 characters)
Example: AID? (x)
HBM,MVD2555,0,P15 (y)
Company, device designation, serial number, software version number
Instruction
SNR? Serial Number
Output serial number of device
Syntax: SNR?
Parameter: None
Effect: Output of the serial number of the device
Response: Character string (10 characters)
Example: SNR? (x)
4021837410
4.2.1.4 Print functions
Command
PFS Print Format Select
Define print-format
Syntax: PFS p1 (x)
Parameters: p1 Signal to be printed
0 Value shown on the display
1 Gross value
2 Net value
4 Peak value1 (maximum)
8 Peak value2 (minimum)
16 Peak value3 (peak-to-peak)
63 All signals and status of limit values
You can set all signal-combinations by totaling the code numbers.
Effect: Signal to be printed is specified.

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The setting affects print-output through the initiation of printing (key, remote)
Response:
Acknowledgment Meaning
0 Command has been executed
? Error
Example: Gross value, Net value are to be printed
p1 = 1+2
PFS 3 (x)
0 (y)
Command
PFS? Print Format Select Query
Query print-format
Syntax: PFS?(x)
Parameters: none
Effect: Signal being printed is output.
Response: q1 (y)
Signal, or signal-combination which was set with the PFS command (Coding: see
PFS command).
Example: PFS? (x)
1 (y)
The gross signal is printed (initiation via key or remote).
4.2.2 Setting-up of the Parameter-sets group
Command
MDD Memory Device Data
Input of amplifier set-up data
Syntax: MDD p1 (x)
Parameters: p1
Amplifier set-up data obtained from the amplifier with the MDD? command (as a
hexadecimal string ” ___ ”, approx. 100 bytes = 200 characters).
Effect: The command is used to save and recall complete set-ups.
To change individual parameters, please use the relevant command (e.g. IMR).
Response: Acknowledgment Meaning
0 Command has been executed
? Error
Example: MDD ”____(hexadecimal string)____” (x)
0 (y)
The amplifier is now set up.
Command
MDD? Memory Device Data Query
Output of amplifier set-up data
Syntax: MDD? (x)
Parameters: none
Effect: The amplifier’s set-up parameters are output.
Response: ”___( hexadecimal string)___” (y) ”approx. 100 bytes = 200 characters
Example: MDD? (x)
”0a00ff.......” (y)
All set-up parameters are output.
Command
TDD Transmit Device Data
Save amplifier settings
Syntax: TDD p1,p2 (x)

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Parameters: p1 Amplifier settings
0 Factory settings (set-up)
1 RECALL from parameter set 1…8
2 SAVE from parameter set 1…8
3 Automatic saving of zero/tare values
if p1=0 (factory setting); p2 no effect
if p1=1 or p1=2 ; p2=parameter-set no.
if p1=3: p2=1, status of automat. saving of zero/tare values
p2 Status of automatic zero/tare value saving
(if p1=3)
0 Off
1 On
p2 Number of the parameter set
(if p1=1 or p1=2)
1..8 Parameter set 1 to 8
Effect: The amplifier settings are saved or stored. Automatic saving of zero/tare values to
the EEPROM can be switched on or off.
Response: Acknowledgment Meaning
0 Command has been executed
? Error
Example 1: TDD2,8 (x)
0 (y)
The current amplifier settings are stored in parameter set 8.
Note: This command triggers a calibration process that permits communication to
continue only after 1...3s.
Example 2: TDD3,1 (x)
0 (y)
Automatic saving of zero/tare values is switched on. At each zeroing the zeroing
value is stored in the current parameter set. At each taring the tare value is stored
in the current parameter set.
Command
TDD? Transmit Device Data Query
Query source of the amplifier settings.
Syntax: TDD?p1 (x)
Parameters: p1
0 Source of the amplifier setting
3 Status of automat. saving of zero/tare values
Effect: The source of the currently active amplifier setting is output or the status of
zero/tare value saving is indicated.
Response: if p1 = 0; q1 shows the source of the amplifier settings
q1 Source of the amplifier settings
1…8 Parameter set 1…8
? Error
if p1 = 3; q1 corresponds to the status of tare/zero value saving
q1 Status of automat. saving of zero/tare
0 Off
1 On

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Example1: TDD?0 (x)
2 (y)
The source of the currently active amplifier setting is parameter set 2.
Example 2: TDD?3 (x)
1 (y)
Automatic saving of zero/tare values is switched on.
4.2.3 Define output format, measurement output
4.2.3.1 Define output format
Command
COF Change Output Format
Change format of measurement output
Syntax: COF p1 (x)
Parameters: p1 Measurement output format
0 Measured value, status (ASCII format)
1 Measured value (ASCII format)
2 Binary measurement output 4 bytes (MSB XXXX LSB)
3 Binary measurement output 4 bytes (LSB XXXX MSB)
4 Binary measurement output 2 bytes (MSB LSB)
5 Binary measurement output 2 bytes (LSB MSB)
6 BCD measurement output
Binary 4-byte output:
Binary 2 byte output: 1=MSB, 2=LSB
BCD output:
Measured values are scaled to the indication upper limit. Where output is in ASCII
format, account is taken of the decimal point. In binary/BCD format the decimal
point must be included by the user in processing of measured values.
Effect: With the following MSV commands measured values are output in the preferred
form.

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Response: Acknowledgment Meaning
0 Command has been executed
? Error
Example: COF0 (x)
0 (y)
Measured values and status are output in ASCII format.
Command
COF? Change Output Format Query
Query format of measurement output
Syntax: COF?(x)
Parameters: none
Effect: Code number for the output format is output.
Response: q1 (y)
Example: COF?(x)
0 (y)
ASCII format is set as the output format for measured value and status.
4.2.3.2 Specify measurement output
Command
MSV? Measuring Signal Value Query
Output of the measured value
Syntax: MSV p1,p2 (x)
Parameters: p1 Signal
1 GR Gross (with display filtering)
2 NET Net (with display filtering)
3 STORE1 Peak value 1 (maximum)
4 STORE2 Peak value 2 (minimum)
5 STORE3 Peak value 3 (peak-to-peak)
6 LVS1 Level
7 LVS1 Hysteresis
8 LVS2 Level
9 LVS2 Hysteresis
10 LVS3 Level
11 LVS3 Hysteresis
12 LVS4 Level
13 LVS4 Hysteresis
14 GR Gross (dyn., without filtering)
15 NET Net (dyn., without filtering)
p2 Number of measured values
0 Send continuously
1…65535 Default = 1
Effect: The measured value from the required signal p1 is output. Format dependent on the
last COF command.
Response: Measured value (output format: see COF command).
Example 1: Output in full ASCII format
COF0(x)
0 (y)
Fetch a gross measured value.
MSV?1 (x)
9,998.0 (y)
Fetch three net measured values.
Status byte*
Measured value = 9.998

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* See 4.2.3.1
MSV?2,3 (x)
9,998.0 CRLF
9,998.0 CRLF
9,998.0 CRLF (y)
Example 2: Output in 4 byte binary format
Binary 4 byte format
COF2 (x)
0 (y)
Fetch a gross measured value.
MSV?1 (x)
#0ffeedd00CRLF(y)
Example 3: Continuous output
Gross measured values are output continuously.
MSV?1,0 (x)
#0ffeedd00CRLF
#0ffeedd00CRLF
#0ffeedd00CRLF
STP(x) Terminate output
Command
STP Stop
End of measurement output
Syntax: STP (x)
Parameters: none
Effect: The measurement output initiated with MSV?1,0 is stopped.
Response: none
Example: STP (x)
4.2.4 Setting up the Adaptation group functions
4.2.4.1 Setting up amplifier input
Command
ASA Amplifier Sensor Adaptation
Input bridge excitation voltage, transducer type and input range
Syntax: ASA p1,p2,p3 (x)
Parameters: P1 Bridge excitation voltage
1 1 V
2 2.5 V
P2 Transducer type
1 Full bridge
2 Half bridge
3 LVDT
P3 Input signal range (at Eop)
1 4mV/V (Eop=2.5 V) / 10mV/V (Eop=1V)
2 40mV/V / 100mV/V
3 400mV/V / 1000mV/V
Effect:
Response:
Bridge excitation voltage, transducer type and input-signal range are set.
Acknowledgement Meaning
0 Command has been executed
? Error
Status byte*
Measured value = 9.998
Status byte*
3 byte measured value
Identification key for binary output

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Example: The DFI 2555 is being set up:
ASA1,2,2 (x)
0 (y)
The DFI 2555 is set to bridge excitation voltage 1 V, half bridge and input-signal
range 100mV/V.
Command
ASA? Amplifier Sensor Adaptation Query
Output bridge excitation voltage, transducer type and input range
Syntax: ASA?p1(x)
Parameters:
p1
0 Output bridge excitation voltage, transducer type and input-
signal range settings
1 Output table of possible settings for bridge excitation voltage,
transducer type and input-signal range
Effect: The amplifier outputs the bridge excitation voltage, transducer type and input-
signal ranges.
Response: ASA?0 (x)
q1,q2,q3 (y)
q1 Bridge excitation voltage
q2 Transducer type
q3 Input signal ranges
Example: ASA?0 (x)
1,2,2 (y)
The DFI 2555 is currently set to bridge excitation voltage 1V, half bridge and input-
signal range
100mV/V.
Response:ASA?1 (x)
q1,q2,q3 (y)
Table of available settings
q1 Bridge excitation voltage
q2 Transducer type
q3 Input signal ranges
Example: ASA?1 (x)
Amplifier’s response:
”01.002.50”, ”123”, ”123”(y)
4.2.4.2 Choose filter settings
Command
ASF Amplifier Signal Filtering
Input of cutoff frequency and filter characteristics
Syntax: ASF p1,p2(x)
Parameters: p1 Filter frequency
1..n Code number for frequency value (corresponds to the index from the
frequency table, which can be output with the command ASF?0) see below.
p2 Filter characteristics
1 Bessel
2 Butterworth
Effect: The low-pass filter is set to a frequency value and set of filter characteristics.
Response: Acknowledgement Meaning
0 Command has been executed
? Error
Example: Input of cutoff frequency and filter characteristics:
ASF 10,1(x)
0 (y)

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The Filter is set to a cutoff frequency of 40Hz and Bessel characteristics (see
Command ASF?)
Command
ASF? Amplifier Signal Filtering Query
Output of cutoff frequency and filter characteristics.
Syntax: ASF?p1(x)
Parameters: p1 Filter code number
0 Current filter settings
1 Frequency table (Bessel and Butterworth)
Effect: Output of the low-pass filter parameters, i.e. set cutoff frequency and filter
characteristics
Response: If p1 =0
q1,q2 (y)
q1 Code number for the filter frequency
q2 Filter characteristics (1=Bessel, 2=Butterworth)
Table of available filter frequencies (Bessel/Butterworth)
Example: Table of available filter frequencies
ASF?1 (x)
”0.050 0.100 0.200 0.500 1.250 2.500 5.00 10.00 20.00 40.00 100.0 200.0 400.0”,
”5.000 10.00 20.00 40.00 80.00 200.0” (y)
The following table shows a summary of the available cutoff frequencies and the
index of the frequency to be set (each element is 5 characters long).
p1 Bessel frequencies (Hz) Butterworth frequencies (Hz)
1 0.050 5.000
2 0.100 10.00
3 0.200 20.00
4 0.500 50.00
5 1.250 80.00
6 2.500 200.0
7 5.000 500.0
8 10.00
9 20.00
10 40.00
11 100.0
12 200.0
13 400.0
Command
MTC Motion Control
Specify motion-count indication (measured values/tolerance band/output)
Syntax:
Parameters:
MTC p1,p2,p3 (x)
p1 Number of measured values
0Motion count indication off
1..255 Number of measurements; in conjunction with the chosen filter frequency
this yields the corresponding time-span
p2 Tolerance band
In digits
p3 Motion-count indication output status
0 No output of status via “WARNING”
1 Output of status via “WARNING”
Effect: The motion-count indication function is set up.
Example: MTC 200,10,1 (x)
0 (y)

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Assumption:
Filter setting: f<2.5Hz = sampling rate of 1200 values/sec
Indication upper limit: 100.00N, resulting in a time span of 166ms
Motion count indication is set:
If 200 measured values lie within a tolerance band of
0.1N (10 digits), motion-count indication is activated.
The status is also output via ”WARNING”.
Command
MTC? Motion Control Query
Output of motion-count indication
Syntax: MTC?p1(x)
Parameters: p1
0 Motion-count indication settings
1 Motion-count indication status
Effect: Output of motion–count indication settings
Response: If p1=0; output of motion–count indication
settings
q1,q2,q3 (y)
q1 Number of measured values
q2 Tolerance zone in displayed units
q3 “WARNING” output status
If p1=1; q1 shows the status of motion-count indication
q1 Motion-count indication status
q2 No standstill; conditions not satisfied
q3 Standstill; conditions satisfied
Example: MTC?0 (x)
0,0,0 (y)
Motion-count indication has not been activated. The status of motion-count indication
is not output via ”WARNING”.
4.2.4.3 Setting autocalibration
Command
ACL Autocal
Switching on/off of autocalibration
Syntax: ACL p1 (x)
Parameters: p1 Automatic calibration
0 Switch off
1 Switch on
Effect: Switchover of autocalibration setting
Response: Acknowledgment Meaning
0 Command has been executed
? Error
Example: ACL1 (x)
0 (y)
Hint: A calibration is triggered and cyclic autocalibration is switched on. This interrupts the
measurement process approximately every 5 minutes and calibrates the amplifier. If
such interruption during a measurement process would be a problem, automatic
calibration must remain switched off.
Command
ACL? Autocal Query
Switching on/off of autocalibration
Syntax: ACL ? (x)
Parameters: none

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Effect: Status of autocalibration is output.
Response: q1 Status
0 Autocalibration is off
1 Autocalibration is on
Example: ACL? (x)
1 (y)
Autocalibration has been switched on.
Command
CAL
Calibrate
Calibration
Syntax: CAL (x)
Parameters: none
Effect: A single calibration is triggered.
Response: Acknowledgment Meaning
0 Command has been executed
? Error
Example: CAL (x)
0 (y)
Calibration is performed.
Note: This command initiates a single calibration, permitting further communication
only after 1 to 3s.
4.2.5 Setting up the Calibration group functions
4.2.5.1 Selecting the unit of measure
Command
ENU Engineering Unit
Input of the unit of measure
Syntax: ENU p1(x)
Parameters: p1 Input of the unit of measure
1…n Code number for the desired unit of measure (see table)
Effect: The unit of measure is set.
Response: Acknowledgment Meaning
0 Command has been executed
? Error
Example: ENU11(x)
0 (y)
kN is set as the unit of measure.
Command
ENU? Engineering Unit Query
Output of the unit of measure
Syntax: ENU?p1(x)
Parameters: p1 Output of the unit of measure
0 Output of currently set unit of measure
1 Output of all available settings
Effect: The currently selected unit of measure is output
Response: q1 (y)
Example 1: ENU?0 (x)
11 (y)
kN has been selected as the unit of measure
Example 2: ENU?1 (x)
”mV/V, V, g, kg, T, kT, TON, LB, oz, N, kN, bar, mbar, Pa, PAS, HPas, KPas
PSI, µm, mm, cm, m, Inch, Nm, kNm, FTLB, INLB, µm/m, m/s, m/ss, %, ‰, PPM s,
MP, MN ” (y)

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Summary of all available units and code numbers
Index Index Index Index
1 mV/V 13 mbar 25 kNm 37 MN
2 V 14 Pa 26 FTLB 38 A
3 g 15 PAS 27 INLB 39 mA
4 kg 16 HPas 28 µm/m
5 T 17 kPas 29 m/s
6 kT 18 PSI 30 m/ss
7 TON 19 µm 31 %
8 LB 20 mm 32 %0
9 oz 21 cm 33 PPM
10 N 22 m 34 s
11 kN 23 inch 35 “blank”
12 bar 24 Nm 36 MP
4.2.5.2 Selecting the indication upper limit
Command
IAD Indication Adaptation
Input, indication upper limit, decimal point, step width
Syntax: IAD p1,p2,p3 (x)
p1 Indication upper limit without decimal point (max. 200000)
p2 Decimal point (number of decimal places 0…5)
p3 Step width (see table)
Parameters: p3 Step width
1 1
2 2
3 5
4 10
5 20
6 50
7 100
8 200
9 500
10 1000
Effect: This command is used to input the indication adaptation values.
Note: For ”V” and ”mV/V” scaling is fixed.
Response: Acknowledgment Meaning
0 Command has been executed
? Error
Example: IAD 10000,3,4 (x)
0 (y)
Indication adaptation is set to:
indication upper limit 10,000 with step width 10
Command
IAD? Indication Adaptation Query
Output input, indication upper limit, decimal point, step width
Syntax: IAD?(x)
Parameters: none
Effect: Output of the current settings for indication upper limit, decimal point, step width
Response: q1,q2,q3 (y)
Parameters: see IAD command
Example: IAD? (x)
10000,3,4 (y)
Indication adaptation is set to: