Oval EL4101 Use and care manual

Ins. No. E-880CM-1-E
1
FLOW COMPUTER EL4001 SERIES
COMMUNICATION MANUAL
Every OVAL Flow Computer is fabricated and shipped from our factory under stringent quality control.
To derive maximum benefit from the computer, we recommend that you become familiar with this
instruction manual before you place it in service and retain a copy at the field location for ready
reference.

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This manual has been prepared for OVAL flow computers of the EL4001 series. Making sure of your
model number and understanding well about the input/output and calculation process according to the
instruction manual for the model, and reference only the specific topic of interest.
In the EL4001 series, mode selection is simple with keystrokes on the front-panel keypad. However, we
recommend you to become thoroughly familiar with the procedure described in this manual before you
reconfigure parameters.
If you have something to inquire, contact the sales office from which you purchased the product, or the
nearest OVAL representative in our customer service network.
(When you inquire, please supply us with the product name, model No., serial No., and other pertinent
information.)
This communication manual applies to the following models:
・EL4101 Steam Service Flow Computer (saturated steam service)
・EL4111 Steam Service Flow Computer (superheated steam service)
・EL4121 Temperature/Pressure Compensation Flow Computer (gas service)
・EL4131 Liquid Temperature Compensation Flow Computer
・EL4201 Temperature/Pressure Compensation Flow Computer (measured in terms of mass)
・EL4211 Liquid Temperature Compensation Flow Computer (measured in terms of mass)
・EL4301 Density Computer for Mass Flowmeter
・EL4311 Density Computer for Mass Flowmeter (solids content flow compensated)
・EL4321 Density Computer (oscillating spool densitometer, gas service)
・EL4401 Blend Oil Temperature Compensation Flow Computer
・EL4501 Multipoint Temperature Compensation Flow Computer
・EL4511 Multipoint Temperature Compensation Flow Computer (with communication interface)
BEFORE YOU BEGIN

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1. COMMUNICATION CAPABILITY OVERVIEW........................................................................................ 5
2. NETWOWRK CONFIGURATION............................................................................................................ 5
2.1 About Write Protect ........................................................................................................................... 6
2.1.1 Write Protect with a Password.................................................................................................... 6
(1) Functions of Basic EL4001......................................................................................................... 6
(2) Functions in Communication Mode ............................................................................................ 6
(3) How to Reset a Password .......................................................................................................... 6
(4) Where unable to Reset a Password ........................................................................................... 6
2.1.2 Write Protect with DIP Switch..................................................................................................... 7
(1) Functions of Basic EL4001......................................................................................................... 7
(2) Functions in Communication Mode ............................................................................................ 7
3. LOCAL / REMOTE SELECTION ............................................................................................................. 8
3.1 Mode Select Map .............................................................................................................................. 9
4. SETUP ITEMS FOR COMMUNICATION .............................................................................................. 10
4.1 Setup Items ..................................................................................................................................... 10
4.2 Menu Trees ..................................................................................................................................... 10
5. COMMUNICATION PROCEDURE.........................................................................................................11
6. COMMUNICATION FORMAT................................................................................................................ 12
6.1 Command Format ........................................................................................................................... 12
6.2 Response Format............................................................................................................................ 12
6.3 Communication Commands............................................................................................................ 13
6.4 Units of Numerical Data in Data Communication............................................................................ 14
6.5 Numerical Data Format in Data Communication............................................................................. 14
6.6 Response Code .............................................................................................................................. 15
6.7 Procedure to Change Parameters in the SET Mode....................................................................... 16
6.8 RUN Mode Data Read Command (RR) .......................................................................................... 17
6.8.1 Description................................................................................................................................ 17
6.8.2 Command/Response................................................................................................................ 18
6.9 SET Mode Read Command (RS).................................................................................................... 20
6.9.1 Description................................................................................................................................ 20
6.9.2 Command/Response................................................................................................................ 23
6.10 SET Mode Write Command (WS) ................................................................................................. 24
6.10.1 Description.............................................................................................................................. 24
6.10.2 Command/Response.............................................................................................................. 24
6.11 SYS Mode Read Commands (RY)................................................................................................ 25
6.11.1 Description.............................................................................................................................. 25
6.11.2 Command/Response .............................................................................................................. 26
6.12 SYS Mode Write Commands (WY) ............................................................................................... 27
6.12.1 Description.............................................................................................................................. 27
6.12.2 Command/Response.............................................................................................................. 27
6.13 Error Status Read Commands (RE).............................................................................................. 28
6.13.1 Description.............................................................................................................................. 28
6.13. 2 Command/Response............................................................................................................. 29
6.14 Error Logging Read Command (RL) ............................................................................................. 30
6.14.1 Description.............................................................................................................................. 30
6.14.2 Command/Response.............................................................................................................. 30
TABLE OF CONTENTS

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6.15 Model Setup Information Read Command (RI)............................................................................. 32
6.15.1 Description.............................................................................................................................. 32
6.15.2 Command/Response.............................................................................................................. 32
6.16 Local/Remote Select Command (SM)........................................................................................... 33
6.16.1 Description.............................................................................................................................. 33
6.16.2 Command/Response.............................................................................................................. 33
6.17 Mode Select Command (MC)........................................................................................................ 34
6.17.1 Description.............................................................................................................................. 34
6.17.2 Command/Response.............................................................................................................. 34
6.18 Computer Status Read Command (RC) ....................................................................................... 36
6.18.1 Description.............................................................................................................................. 36
6.18.2 Command/Response.............................................................................................................. 36
6.19 SYS Mode Calendar Read Command (RD).................................................................................. 37
6.19.1 Description.............................................................................................................................. 37
6.19.2 Command/Response.............................................................................................................. 37
6.20 SYS Mode Calendar Write Command (WD) ................................................................................. 38
6.20.1 Description.............................................................................................................................. 38
6.20.2 Command/Response.............................................................................................................. 38
6.21 SYS Mode Total Counter Reset Command (ST)........................................................................... 39
6.21.1 Description.............................................................................................................................. 39
6.21.2 Command/Response.............................................................................................................. 39
6.22 SYS Mode Simulated Analog Output Command (SA) .................................................................. 40
6.22.1 Description.............................................................................................................................. 40
6.22..2 Command/Response............................................................................................................. 40
6.23 Special Commands (SC) with EL4401.......................................................................................... 41
6.23.1 Function Codes 00 through 04 ............................................................................................... 41
(1) Description................................................................................................................................ 41
(2) Command/Response................................................................................................................ 41
6.23.2 Function Codes 05 through 07 ............................................................................................... 42
(1) Description................................................................................................................................ 42
6.23.3 Command/Response.............................................................................................................. 42
6.24 Special Commands (SC) with EL4501 and EL4511...................................................................... 43
6.24.1 Function Codes 00 through 03 ............................................................................................... 43
(1) Description................................................................................................................................ 43
(2) Command/Response................................................................................................................ 43
6.24.2 Function Codes 04 through 07 ............................................................................................... 44
(1) Description................................................................................................................................ 44
6.24.3 Command/Response.............................................................................................................. 44
7. ABOUT BCC / SUMCHECK.............................................................................................................. 45
8. ABOUT CR/LF................................................................................................................................... 46
9. ABOUT DURATION BETWEEN MESSAGES .................................................................................. 47
10. CODES ASSIGNED TO UNITS......................................................................................................... 48
11. ASCII CODE...................................................................................................................................... 49

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1. COMMUNICATION CAPABILITY OVERVIEW
With EL4001, communication between EL4001 and the host system (personal computer, sequencer, etc.)
is available via RS-485. By communication, you can read the information displayed in the RUN mode,
read/write the setup parameters in the SET and/or SYS mode, or by popping the key card into the drive,
you can read/write the viscosity, density, and liquid kind you want to set up.
●No handshake: Nonprocedural
●One master to n slaves: n-multipoint communication (n: a maximum of 16 units)
●Compatible with local/remote selection : Shown on the LCD screen
※ We do not offer software support for higher-level systems.
2. NETWORK CONFIGURATION
A higher-level (host) system (PC, sequencer, etc.) and lower-level systems (EL4001) are connected in a
network shown below.
※Be sure to connect a terminating resistance (100 Ωapprox.) at both ends of the cable. EL4001 has a
100 Ωterminating resistor internally. At the end of communication channel, place the DIP switch at the
rear in the ON position; at an intermediate point in the channel, place it in the OFF position.
Host
Computer
RS-232C
↓
RS485
TerminatingResistor
TerminatingResistorON
TerminatingResistorOFF
ＥＬ４００１ ＥＬ４００１
RS-232C

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2.1 About Write Protect
2.1.1 Write Protect with a Password
（1）Functions of Basic EL4001
Parameter write protect can be selectably enabled or disabled at the password setup menu in the
SYS mode. While the password setup is "ON", the computer prompts you to enter the password when
changing the RUN mode to other mode. When the password entered is identical with the registered
password, a switch to another mode is permissible. If not, a reminder message appears, prompting you to
enter the correct once again.
With the parameter setup cared inserted in the drive, on the other hand, entering a new parameter into
the card while the password setup is "ON", the registered password is also written in the card.
Inserting the card with the password setup in the "ON" while a transfer from the RUN mode to another
mode takes place, you can change modes to another mode without the need of keying in a password if
the password that has been written in the card is identical with the registered password. If not, a reminder
message appears, prompting you to enter the correct password again. In this case, you need to key in
the password.
（2）Operation in Communication
In communication, you can change modes with the mode select command. By including a password in
the message at this time, write protect is enabled. With the password setup placed in "ON", a change to
another mode is permitted if the password in the message is identical with the registered one, similar to
the mode selection with keystrokes. If not, a reminder message is sent out. However, when the password
setup is in "OFF", the computer will override the password in the message.
（3）How to Reset a Password
In the password setup in the SYS mode, if "OFF" is your option for the setup, the computer will no longer
prompt you to enter the password.
（4）Where unable to Reset a Password
If you have forgotten your password and are unable to reset it, there is no way to reset it by
communication. In such a case, you can place the DIP switch inside the computer in the password setup
"OFF".
This resets the password, but it requires you to open up the computer front panel.
※CAUTION: For details of DIP switch setup, see EL4001 Key Operation Manual.
SETMode
RUNMode
SYSMode
ModeSelect
Screen Passwordentryscreen
Passwordentryscreen

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2.1.2 Write Protect with DIP Switch
（1）Functions of Basic EL4001
By setting up the DIP switch on the basic EL4001 side, you can inhibit mode changes to the SET and
SYS mode. When protected, in function keys, "SET MODE" and "SYS MODE" will no longer appear on
the screen.
※For details of DIP switch setup, see EL4001 Key Operation Manual.
（2）Operation in Communication
In data communication, when you attempt to change modes with the mode select command, a message
will tell you with a response code that settings are write protected if so configured.
Write protected
→
Write enabled →

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3. LOCAL/REMOTE SELECTION
The communication modes in the EL4001 are defined as AUTO/MANUAL statuses.
AUTO allows reconfiguration of settings through communication or keystrokes (local/remote).
In MANUAL, control through communication is disabled.
MANUAL: Only data entry through keystrokes is valid. Communication is unconditionally disabled.
Set up at the communication setup menu in the SYS mode.
AUTO: Changes in settings by keystrokes or communication are acceptable.
Set up at the communication setup menu in the SYS mode.
Local: Only keystrokes are acceptable. In the RUN mode, switching from one mode to another
made through communication brings up a message telling you of the switchover, and goes
into the remote mode.
Remote: Only communication is acceptable. In the RUN mode, keying in brings up a message
prompting you whether to switch into local, and goes into local if option is YES.
Local/remote and mode relationship
LOCAL REMOTE
ＭＡＮＵＡＬ
ＭＡＮＵＡＬ
ＡＵＴＯ
ＡＵＴＯ
Comm.denied
Comm.denied
Comm.denied
Keystroke
Setupatcomm.
Setupmenu
InSYSmode
keystrokesonly
ＲＵＮ
mode
ＲＵＮ
mode
ＲＵＮ
mode
ＲＵＮ
mode
ＲＵＮ
mode
ＲＵＮ
mode
Selectableonly
InRUNmode
Writeprotected
Comm.denied
Selectionthrucomm.
Selectionthrukeystrokes
SetupthruDIP
Readable
rangethru
comm.
Writable
rangethru
.comm.
Comm.only
ＥＸＴ
mode
ＥＸＴ
mode
ＳＹＳ
mode
ＳＹＳ
mode
ＳＹＳ
mode
ＳＥＴ
mode
ＳＥＴ
mode
ＳＥＴ
mode
RemoteLocal
※Note …When you want to make this operation in the local state with IC card (a key
card for EL4511, an adjust card for maintenance, and a model setting
card) inserted, do it from the PC of higher level with communication stopped.

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3.1 Mode Select Map
Shown below is the mode transition diagram.
Communication (remote)
To normal RUN mode
Other than RUN
mode
Comm. command
After showing for 3 seconds

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4. SETUP ITEMS FOR COMMUNICATION
You can access communication-related menu items in the SYS mode.
4.1 Menu Items
Communication-related menu items include
Communication modes : AUTO/MANUAL
Transfer rate : 1200, 2400, 4800, and 9600
Data bit number : 7 bits and 8 bits
Stop bit : 1 bit, 1.5 bits, and 2 bits
Home address : 2-digits hexadecimal: 00 to 0F
Terminate : None, LF, CR, and CR + LF
BCC：None, BCC, SUM
Parity：None, odd or even
4.2 Menu Trees
SYS mode-related setup menus are given below.
ＭＯＤＥ
ＭＯＤＥ Select(AUTO/MANUAL)
ｂｐｓＲＡＴＥ
ｂｐｓＲＡＴＥ Select(1200,2400,4800,9600)
ＤＡＴＡＢＩＴ
ＤＡＴＡＢＩＴ Select(7bits,8bits)
ＳＴＯＰＢＩＴ
ＢＰＳＢＩＴ Select(1bit,1.5bits,2bits)
ＡＤＤＲＥＳＳ
ＡＤＤＲＥＳＳ Select(00thru0F)
ＴＥＲＭＩＮＡＴＥ
ＴＥＲＭＩＮＡＴＥ Select(Non,LF,CR,CR+LF)
ＢＣＣ
ＢＣＣ Select(None,BCC,SUM)
ＰＡＲＩＴＹ
ＰＡＲＩＴＹ Select(None,odd,even)
SYSMode
ＣＯＭＭＵＮＩＣＡＴＩＯＮ
※Fordetailsaboutmenuitems,seeEL4001KeyOperationManual.

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5. COMMUNICATION PROCEDURE
The host system (PC, for example) sends an R/W command to a client or secondary system (EL4001).
The secondary equipment (EL4001) in turn sends a response only when the home address is in
agreement; if not, it abandons the message without sending any response. In the meantime, the host
system (PC, for example) awaits a response from a client (EL4001) after command transmission for a
predetermined time period (5 seconds or so). If no response is received within this time duration, it is
necessary for the host system (PC, etc.) to retry or other processing.
・Normal send/receive:
・Reception error with EL4001:
Upon detection of an error, such as command error or functional error on the EL side, a response
message with an error code is sent back to the host.
・If communication failure occurs on the EL side or the host fails to receive a response:
Following a command transmission, the host goes into wait state. If it fails to receive a response within
a preset period of time, it retries the transmission.
Host system Command ＥＬ４００１
Response
Host system Command ＥＬ４００１
Host system Command ＥＬ４００１
Response message
is sent back with an
error code.
If no response
within a preset
period of time.
Command retransmit

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6. COMMUNICATION FORMAT
6.1 Command Format
O O F O R R O O ……
ＳＴＸ ＥＴＸ ＢＣＣ
No. Item Description Bytes
1 Client system No. Client system (EL4511) address 00 thru 0F in 16 ways 2
2 Host system No. Host system (PC, etc.) address F0 thru FF in 16 ways 2
3 Command Defined by two upper case English characters 2
4 Function code Defined by two upper case English characters for each command 2
5 Characters Defined for each command Indefinite
6ＢＣＣ
(1) None
(2) ＳＵＭ
(3) ＢＣＣ (XOR)
0
2
2
7 Terminate
(1) None
(2) ＬＦ
(3) ＣＲ
(4) ＣＲ＋ＬＦ
0
1
1
2
No. Item Description Bytes
1 Client system No. Client system (EL4511) address 00 thru 0F in 16 ways 2
2 Host system No. Host system (PC, etc.) address F0 thru FF in 16 ways 2
3
Response code
Defined by two upper case English characters 2
4 Characters Defined for each command Indefinite
5ＢＣＣ
(1) None
(2) ＳＵＭ
(3) ＢＣＣ (XOR)
0
2
2
6 Terminate
(1) None
(2) ＬＦ
(3) ＣＲ
(4) ＣＲ＋ＬＦ
0
1
1
2
All character strings are in ASCII code.
1 2 3 4 5 6 7
6.2 Response Format
O O F O O O ……
ＳＴＸ ＥＴＸ ＢＣＣ
1 2 3 4 5 6
Address at the other end
Home Address
Command
Function
Characters (data)
Terminate
Setup is
optional.
Setup is
optional.
Setup is
optional.
Setup is
optional.
Terminate
Characters (data)
Response code
Home Address
Address at the other end

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6.3 Communication Commands
Each command is represented in a two-byte code. Commands come under three major groups -
READ,WRITE, and special.
ＲＲ：Read the information in the RUN mode.
ＲＳ：Read the information in the SET mode.
ＷＳ：Write the information in the SET mode.
ＲＹ：Read the information in the SYS mode.
ＷＹ：Write the information in the SYS mode.
ＲＥ：Read an error status.
ＲＬ：Read/reset the error logging.
ＲＩ：Read the model setup information.
ＳＭ：Local/remote select
ＭＣ：Mode select command
ＲＣ：Read the computer status.
ＲＤ：Read the calendar.
ＷＤ：Write the calendar.
ＳＴ：Total counter reset
ＳＡ：Simulated analog output
ＳＣ：Special command
In the case of EL4511
Batch write/read of settings
Data: Liquid kind, viscosity, viscosity unit, density, density unit.
Read/write liquid kind.
Read/write viscosity and viscosity unit.
Read/write density and density unit.

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6.4 About the Numerical Data Units in the message
Any units can be chosen for numerical data in data communication with the host system (PC, etc.). Take
a pressure unit Pa, for example, when Pa ( "PASCAL" ) is your setup option pressure unit on the host
system (PC, etc.) side, then the pressure-related numerical values in data communication will read in Pa
across the board.
For this reason, all unit-dependent numerical values (temperature, pressure, instant flowrate, etc.) are
paired with corresponding unit codes before they are transmitted.
HostSystem EL4001
Setup(screen) Setup(screen)
Memory
Message
Memory
Pressure : kgf/cm2
Message
Transmit
Convert
Pressure:PASCAL Pressure:PASCAL
Pressure:PASCAL
Pressure:PASCAL Pressure:PASCAL
6.5 About the Numerical Data Format in Data Transmission
Numerical data format in data transmission basically come under the following two styles where all
characters use the ASCII code with decimal point eliminated.
①Standard format
Numerical data format generally uses an "exponential representation".
・Mantissa sign 1 digit
・Numerical value in mantissa 6 digits
・Exponent part sign 1 digit
・Numerical value in exponent part 2 digits
②Special (accumulated total) format
Total counter pulse uses the following format.
・Integer part 10 digits (effective data 8 digits)

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Code Name Description
００ Normal data reception Normal reception
０１ Communication error Undefined
０２ Parity error Parity check error (hardware)
０３ Data length error Data received has an illegal length (buffer overflow)
０４ Data error Data received is invalid.
０５ BCC check error BCC (block check character) check error (software)
１０ Command error An undefined command has been received.
１１ Function code error Data received is an error.
１２ Local select An undefined function code has been received.
１３ Forced remote termination A switchover from remote to local has taken place by operating a key.
(A switchover was made properly in the RUN mode.)
２０ Local error A switchover from remote to local has taken place by operating a key.
(A forced switchover was made in a mode other than RUN mode.)
２１ Mode lock error Mode select remains locked by DIP switch.
２２ Mode setup error Command received is invalid to implement in the current mode.
２３ Password error Invalid password
２４ Parameter error Parameter (data format) is invalid.
２５ Setting out of range Setting is invalid.
３０ Model-specific command Commands incompatible with this model
6.6 Response Codes

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6.7 Procedure to Change Parameters in the SET Mode
If it is desired to change parameters in the SET mode in communication, follow the steps given below:
① With computer status read command (RC), make sure of the mode.
（１）If the response is local, select the remote with mode select command.
（２）If the response is remote, go to ③.
（３）If write protected by DIP switch, cancel the DIP setting in the computer.
② With local/remote select command (SM), switch to the remote.
・At this point, a message telling you of a switch from local to remote appears on the EL4001 screen.
③ With computer status read command (RC), make sure of the mode.
（１）If the response is in the SYS mode, select the RUN mode with mode select command (MC).
（２）If the response is in the SET mode, go to ⑤.
④ Switch from RUN to SET with mode select command (MC).
・At this point, the data in the EEPROM is copied to the RAM workarea.
・The EL4001 display shows the SET mode main menu screen.
⑤ To view the data you want to modify, read the parameters with SET mode data read command (RS).
⑥ With SET mode data write command (WS), change the parameters of interest.
⑦ Repeat steps ⑤and ⑥until all changes are made. Then, with mode select command (MC), calculate
the minimum scaling factor for pulse output (SET →scaling setup).
・A response with the minimum scaling factor for pulse output is sent back.
・With mode select command (MC), you can cancel the modification and return to the RUN mode at
this point.
⑧ With mode select command (MC), switch the scaling setup to the RUN. At this point, the scaling
factor for pulse output you set up is added to the command message.
・By this process, the contents modified in the RAM workarea is copied to the EEPROM, and the
scaling factor for pulse output is set up.
（１）If the response is acceptable, a switchover to the RUN mode takes place.
（２）If the response is unacceptable, the state ⑦remains unchanged.
・In this case, with mode select command (MC), you are to cancel or set up the right value again,
and switch from the scaling setup to the RUN once again.

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6.8 RUN Mode Data Read Command (RR)
6.8.1 Description
With this command, the information shown in the RUN mode can be read in batch or individually. Function
codes are assigned to individual items to be read.
Function No. 00 : Batch read
01…: Read individually
※CAUTION:
Function EL4101 EL4111 EL4121 EL4131
００ Batch read Batch read Batch read Batch read
０１ Total count 1, unit Total count 1, unit Uncorrected total, unit Uncorrected total, unit
０２ Total count 2, unit Total count 2, unit Corrected total, unit Corrected total, unit
０３ ――― Instant flowrate, unit ――― ―――
０４ Instant flowrate, unit Temperature, unit Uncorrected instant
flowrate, unit
Uncorrected instant
flowrate, unit
０５ Pressure, unit Pressure, unit Corrected instant flowrate, unit Corrected instant flowrate, unit
０６ ――― ――― ――― ―――
０７ Corr. factor 1, unit Corr. factor 1, unit Temperature, unit Temperature, unit
０８ Corr. factor 2, unit Corr. factor 2, unit Pressure, unit ―――
０９ Meter error corr. factor, unit Meter error corr. factor, unit ――― ―――
０Ａ Meter correction factor, unit Meter correction factor, unit Correction factor, unit Meter error correction
factor, unit
０Ｂ Specific weight, unit Specific weight, unit Meter error correction
factor, unit
Temperature correction
coeff., unit
０Ｃ Specific enthalpy, unit Specific enthalpy, unit 3 αcorr. factor, unit ―――
０Ｄ ――― ――― T/P corr. factor, unit ―――
０Ｅ ――― ――― Quadratic correction factor, unit ―――
Functions of Read Command in the RUN Mode by Model
Function EL4201 EL4211 EL4301 EL4311
００ Batch read Batch read Batch read Batch read
０１ Uncorrected total, unit Uncorrected total, unit Uncorrected density, unit Uncorrected density, unit
０２ Corrected total, unit Corrected total, unit Corrected density, unit Corrected density, unit
０３ ――― ――― ――― ―――
０４ Uncorrected instant
flowrate, unit
Uncorrected instant
flowrate, unit Temperature, unit Uncorrected total, unit
０５ Corrected instant flowrate,
unit
Corrected instant flowrate,
unit Density period, unit Corrected solids content total, unit
０６ ――― Temperature, unit ――― ―――
０７ Temperature, unit Meter error correction
factor, unit
Solids content weight ratio,
unit
Uncorrected instant
flowrate, unit
０８ Pressure, unit Temperature correction
coefficient, unit ――― Corrected solids content instant flowrate, unit
０９ ――― Density, unit ――― ―――
０Ａ Correction factor, unit ――― ――― Temperature, unit
０Ｂ Meter error correction factor, unit ――― ――― Density period, unit
０Ｃ 3αcorr. factor, unit ――― ――― ―――
０Ｄ T/P corr. factor, unit ――― ――― Meter error correction factor, unit
０Ｅ Quadratic correction factor, unit ――― ――― Solids content weight ratio, unit
０F Density, unit ――― ――― ―――
You can read in RUN, SET, or SYS mode. In the SYS mode, however, the
contents to be read are those last calculated because calculation does not
take place in the SYS mode

E-880CM-1-E
18
Function EL4321 EL4401 EL4501、EL4511
００ Batch read Batch read Batch read
０１ Uncorrected density, unit Total count 1, unit Uncorrected total, unit
０２ Corrected density, unit Total count 2, unit Total corrected for viscosity, unit
０３ ――― Instant flowrate, unit Total corrected for viscosity and
temperature, unit
０４ Temperature, unit Temperature, unit Temperature, unit
０５ Pressure, unit Blend rate, unit Density set, unit
０６ ――― ――― Viscosity set, unit
０７ Molecular weight, unit Overall meter error, unit Overall meter error, unit
０８ Specific weight, unit Volumetric conversion
factor, unit Volumetric conversion factor, unit
０９ ――― ――― ―――
０Ａ ――― ――― Correction factor E1
０Ｂ ――― ――― Correction factor E2
０Ｃ ――― ――― Frequency
Functions of Read Command in the RUN Mode by Model
6.8.2 Command/Response
①Batch read [with 8 items to be displayed in the RUN mode (EL4501 and EL4511)]
Hostsystem
Clientsystem
EL4511
ＳＴＸ ＳＴＸ
ＲＲ
ＥＴＸ
ＥＴＸ
BCC
ＣＲ
ＬＦ
ＣＲ
ＬＦ
Display1
（Uncorrectedtotal）
Unit Unit Unit
Unit
Display２
（Totalcorrectedforviscosity）
Display３
(Totalcorrectedforvis.,temp.)
Display４
(Temperature)
Unit Unit Unit
Display５
（Densityset）
Display６
（Viscosityset）
Display７
（Overallmeteraccuracy）
Unit Unit Unit
Display８
 （Volumetricconversionfactor）
Display９
（CorrectionfactorE1）
Display１0
（CorrectionfactorE2）
Unit ＊ ＊
Display11
（Frequency）
Client
No.
Host
No.
Host
No.
Client
No.
Func.
code
Res-
ponse

E-880CM-1-E
1
Example: To read in batch (EL4501 and EL4511)
②To read individually (EL4501 and EL4511)
Example: 4th tem (temperature) in RUN mode (EL4501 and EL4511)
Hostsystem
PC,etc.
Clientsystem
EL4511
ＳＴＸ
ＳＴＸ
ＲＲ
F0
F0
ＥＴＸ
ＣＲ
ＬＦ
ＥＴＸ
ＣＲ
ＬＦ
01
01
00
00 0000000000
74
2 9
2 9 2 9
0000000000 0000000000 −299769＋0120
02 30 31 46 30 52 52 30 30 03 37 34 0D 0A
02 30 31 46 30 30 30 30 30 30 30 30 30 30 30 30 30 32 39
30 30 30 30 30 30 30 30 30 30 32 39 30 30 30 30 30 30 30 30 30 30 32 39 2D 32 39 39 37 36 39 2B 30 31 32 30
5 C 8 D
＋ 1 0 0 0 0 0 ＋ 0 0 ＋ 2 5 0 0 0 0 ＋ 0 0 ＋ 1 0 0 1 2 0 ＋ 0 0 0 0
2B 31 30 30 30 30 30 2B 30 30 35 43 2B 32 35 30 30 30 30 2B 30 30 38 44 2B 31 30 30 31 32 30 2B 30 30 30 30
0 0 0 0
＋ 1 0 0 0 0 0 ＋ 0 0 ＋ 1 0 0 0 0 0 ＋ 0 0 ＋ 1 0 0 0 0 0 ＋ 0 0 0 0
2B 31 30 30 30 30 30 2B 30 30 30 30 2B 31 30 30 30 30 30 2B 30 30 30 30 2B 31 30 30 30 30 30 2B 30 30 30 30
0 0
＋ 1 0 0 0 0 0 ＋ 0 0
2B 31 30 30 30 30 30 2B 30 30 30 30 03 0D 0A
＊ ＊
HEXdata
ＳＴＸ
ＳＴＸ
ＲＲ
F0
F0
ＥＴＸ
ＣＲ
ＬＦ
01
01
04
00 − 3 0 0 5 8 8 ＋ 0 1
70
ＥＴＸ
ＣＲ
ＬＦ
77
2 0
02 30 31 46 30 52 52 30 34 03 37 30 0D 0A
02 30 31 46 30 30 30 2D 33 30 30 35 38 38 2B 30 31 32 30 03 37 37 0D 0A
ＳＴＸ
Client
No.
ＳＴＸ
ＲＲ
ＥＴＸ BCC
ＣＲ
ＬＦ
ＥＴＸ BCC
ＣＲ
ＬＦ
Displaydata
Hostsystem
Clientsystem
EL4511 Unit
Host
No.
Client
No.
Func.
code
Host
No.
Res-
ponse
Hostsystem
PC,etc.
Clientsystem
EL4511
HEXdata

E-880CM-1-E
0
6.9 SET Mode Data Read Command (RS)
6.9.1 Data
With this command, you can read the data set up in the SET mode individually. The function codes are
assigned to individual items to be read.
Functions of SET Mode Command and Contents
Func. Bracket Item Data format 4101 4111 4121 4131 4201 4211 4301 4311 4321 4401 4501
００
Temp. input
Unit XX ○○○○○○○○○○
０１ Fixed value +XXXXXX+XX ○○○○○○○○○○
０２ Baseline +XXXXXX+XX ○○○○○○○○○○
０３ Full scale +XXXXXX+XX ○○○○○○○○○○
０４ Under alarm point +XXXXXX+XX ○○○○○○○○○○
０５ Over alarm point +XXXXXX+XX ○○○○○○○○○○
０６ Under fallback value +XXXXXX+XX ○○○○○○○○○○
０７ Over fallback value +XXXXXX+XX ○○○○○○○○○○
０８ Smoothing factor +XXXXXX+XX ○○○○○○○○○○
1０
Press. input
Unit XX ○ ○ ○ ○ ○ ○
1１Fixed value +XXXXXX+XX ○ ○ ○ ○ ○ ○
1２Baseline +XXXXXX+XX ○ ○ ○ ○ ○ ○
1３Full scale +XXXXXX+XX ○ ○ ○ ○ ○ ○
1４Under alarm point +XXXXXX+XX ○ ○ ○ ○ ○ ○
1５Over alarm point +XXXXXX+XX ○ ○ ○ ○ ○ ○
1６Under fallback value +XXXXXX+XX ○ ○ ○ ○ ○ ○
1７Over fallback value +XXXXXX+XX ○ ○ ○ ○ ○ ○
1８Smoothing factor +XXXXXX+XX ○ ○ ○ ○ ○
２０ Pulse input Meter factor +XXXXXX+XX ○ ○ ○ ○ ○ ○ ○ ○ ○
２１ Max. frequency +XXXXXX+XX ○ ○ ○ ○ ○ ○ ○ ○ ○
２２ Total count 1 Unit XX ○ ○ ○ ○ ○ ○ ○ ○ ○
２３ Total count 2 Unit XX ○ ○ ○ ○ ○ ○ ○ ○ ○
２４ Total count 3 Unit XX ○
２５
Instant measure
Instant flowrate measuring system XX ○ ○ ○ ○ ○ ○ ○ ○ ○
２６ Low cutoff frequency +XXXXXX+XX ○ ○ ○ ○ ○ ○ ○ ○ ○
２７ Low cutoff count stop XX ○ ○ ○ ○ ○ ○ ○ ○ ○
２８ Smoothing factor +XXXXXX+XX ○ ○ ○ ○ ○ ○ ○ ○ ○
２９ Max. wait time, instant rate measuring +XXXXXX+XX ○ ○ ○ ○ ○ ○ ○ ○ ○
２Ａ No. of cycles, instant rate metering +XXXXXX+XX ○ ○ ○ ○ ○ ○ ○ ○ ○
２Ｂ Interpolation XX ○ ○ ○ ○ ○ ○ ○ ○ ○
２Ｃ Ref. clock correction factor +XXXXXX+XX ○ ○ ○ ○ ○ ○ ○ ○ ○
３０
Analog output
Unit XX ○○○○○○○○○○○
３１ Baseline +XXXXXX+XX ○○○○○○○○○○○
３２ Full scale +XXXXXX+XX ○○○○○○○○○○○
３３ Upper limit of output +XXXXXX+XX ○○○○○○○○○○○
３４ Lower limit of output +XXXXXX+XX ○○○○○○○○○○○
３５ Low cutoff +XXXXXX+XX ○
３６ Instant flow 1 Unit XX ○ ○ ○ ○ ○ ○ ○ ○
３７ Instant flow 2 Unit XX ○ ○ ○ ○ ○
３８ Analog output Smoothing factor +XXXXXX+XX ○○○○○○○○○○○
３９
４０
3αcorr. factor
Correction system XX ○ ○ ○ ○ ○
４１ α factor +XXXXXX+XX ○ ○ ○ ○ ○
４２ β factor +XXXXXX+XX ○ ○ ○ ○ ○
４３ Ref. temperature +XXXXXX+XX ○ ○ ○ ○ ○
４４ T/P corr. factor Ref. temperature +XXXXXX+XX ○ ○ ○
４５ Ref. pressure +XXXXXX+XX ○ ○ ○