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Oval EL4101 Communications Manual

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E-880CM-1-E
Ins. No.
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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  • Page 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...
  • Page 2 E-880CM-1-E BEFORE YOU BEGIN 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.

  • Page 3: Table Of Contents

    E-880CM-1-E TABLE OF CONTENTS 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 ......................
  • Page 4 E-880CM-1-E 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 ..........................

  • Page 5: Communication Capability Overview

    E-880CM-1-E 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.

  • Page 6: About Write Protect

    E-880CM-1-E 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.

  • Page 7: Write Protect With Dip Switch

    E-880CM-1-E 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.

  • Page 8: Local/Remote Selection

    E-880CM-1-E 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.

  • Page 9: Mode Select Map

    E-880CM-1-E 3.1 Mode Select Map Shown below is the mode transition diagram. Communication (remote) Other than RUN mode To normal RUN mode After showing for 3 seconds Comm. command...

  • Page 10: Setup Items For Communication

    E-880CM-1-E 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...

  • Page 11: Communication Procedure

    E-880CM-1-E 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).

  • Page 12: Communication Format

    E-880CM-1-E 6. COMMUNICATION FORMAT 6.1 Command Format …… Ｓ Ｅ Ｂ Ｔ Ｔ Ｃ Ｘ Ｘ Ｃ Item Description Bytes Client system No. Client system (EL4511) address 00 thru 0F in 16 ways Host system No. Host system (PC, etc.) address F0 thru FF in 16 ways Command Defined by two upper case English characters Function code...

  • Page 13: Communication Commands

    E-880CM-1-E  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.

  • Page 14: Units Of Numerical Data In Data Communication

    E-880CM-1-E 　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.

  • Page 15: Response Code

    E-880CM-1-E 6.6 Response Codes Code Name Description ００ Normal data reception Normal reception ０１ Communication error Undefined Parity error Parity check error (hardware) ０２ Data length error Data received has an illegal length (buffer overflow) ０３ ０４ Data error Data received is invalid. ０５...

  • Page 16: Procedure To Change Parameters In The Set Mode

    E-880CM-1-E 　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. 　　...

  • Page 17: Run Mode Data Read Command (Rr)

    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 Functions of Read Command in the RUN Mode by Model Function EL4101 EL4111 EL4121 EL4131 ００...

  • Page 18: Command/Response

    E-880CM-1-E Functions of Read Command in the RUN Mode by Model Function EL4321 EL4401 EL4501、EL4511 Batch read Batch read Batch read ００ Uncorrected density, unit Total count 1, unit Uncorrected total, unit ０１ Corrected density, unit Total count 2, unit Total corrected for viscosity, unit ０２...
  • Page 19 E-880CM-1-E Example: To read in batch (EL4501 and EL4511) Ｓ Ｅ Ｃ Ｌ Ｔ Ｔ Host system Ｆ Ｒ 0 1 F 0 0 0 7 4 ＲＲ Ｘ Ｘ PC, etc. HEX data 02 30 31 46 30 52 52 30 30 03 37 34 0D 0A Ｓ...

  • Page 20: Set Mode Read Command (Rs)

    E-880CM-1-E 　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.
  • Page 21 E-880CM-1-E Func. Bracket Item Data format 4101 4111 4121 4131 4201 4211 4301 4311 4321 4401 4501 ５０ Correction system ○ ○ ○ ○ ○ ○ ○ ○ Fixed value +XXXXXX+XX ５１ ○ ○ ○ ○ ○ ○ ○ ○ Frequency 1 +XXXXXX+XX ５２...
  • Page 22 E-880CM-1-E Func. Bracket Item Data format 4101 4111 4121 4131 4201 4211 4301 4311 4321 4401 4501 ９Ｃ Density period with air +XXXXXX+XX ○ ○ ９Ｄ Density with water +XXXXXX+XX ○ ○ ９Ｅ Density during calibration with water +XXXXXX+XX ○ ○ ９Ｆ...

  • Page 23: Command/Response

    E-880CM-1-E 　6.9.2 Command/Response 　① To read numerical data Ｓ Ｅ Ｌ Ｃ Ｔ Ｔ Client Host Func. Ｆ Ｒ ＲS Ｘ BCC Host system Ｘ code PC, etc. Ｓ Ｅ Ｌ Ｃ Ｔ Client system Ｔ Client Host Res- Ｆ Ｒ Ｘ BCC Numerical data Unit Ｘ...

  • Page 24: Set Mode Write Command (Ws)

    E-880CM-1-E 　6.10 SET Write Command (WS) 　6.10.1 Data Contents With this command, you can write the data in the SET mode individually. Function codes are assigned to individual contents to be read. Modes other than SET mode are invalid. Numerical data and their units are set up individually in pairs. These units however differ from those set up in the SET mode in that they are used in data transmission.

  • Page 25: Sys Mode Read Commands (Ry)

    E-880CM-1-E 　6.11 SYS Mode Data Read Command (RY) 　6.11.1 Description This command reads the contents data shown in the SYS mode individually. (See the list of SYS Mode Command Functions.) Modes other than SYS mode are invalid. Function of SYS Mode Command Func- Data Data...

  • Page 26: Command/Response

    E-880CM-1-E 　6.11.2 Command/Response Ｓ Ｅ Ｌ Ｃ Ｔ Ｔ Client Host Func. Ｆ Ｒ Ｘ BCC Host system R Y Ｘ code PC, etc. Ｓ Ｅ Ｌ Ｃ Ｔ Client system Ｔ Client Host Res- Ｆ Ｒ Ｘ BCC Data Ｘ EL4511 ponse 　Example: Temperature input format Ｓ...

  • Page 27: Sys Mode Write Commands (Wy)

    E-880CM-1-E 　6.12 Write Command in SYS Mode (WY) 　6.12.1 Description This command writes contents in the SYS mode individually (See Functions of SYS Mode Command). Command is invalid unless in the local or SYS mode. 　6.12.2 Command/Response Ｓ Ｅ Ｃ Ｌ...

  • Page 28: Error Status Read Commands (Re)

    E-880CM-1-E 　6.13 Error Status Read Command (RE)  6.13.1 Description With this command, you can read the error count of the basic EL4001 and error flags (statuses). One error is represented by one byte; 0 (30H) = normal status as opposed to 1 (31H) = error status. (See the List of Functions.) In reading individually, a response data is always sent in 2-bytes (specified location and 1-byte data that follows).

  • Page 29: Command/Response

    E-880CM-1-E 　6.13.2 Command/Response 　① A list of error statuses Ｓ Ｅ Ｃ Ｌ Ｔ Ｔ Client Host Func. Ｆ Ｒ Host system Ｒ E Ｘ BCC Ｘ code PC, etc. Ｓ Client system Ｔ Client Host Res- No. of Data Ｘ EL4511 ponse Errors 1 2 3 4 5 6 7 8 9 ...

  • Page 30: Error Logging Read Command (Rl)

    E-880CM-1-E 　6.14 Error Logging Read Command (RL) 　6.14.1 Description 　With this command, you can read the logging record of error events in batch or individually. 　　 Function No. 00: Batch read 01… : Read error events individually. Error No. is the same as the byte number of error status read command. (00: "None")　 ※...
  • Page 31 E-880CM-1-E 　② Read individually Ｓ Ｅ Ｃ Ｌ Ｔ Ｔ Client Host Func. Ｆ Ｒ Host system Ｒ L Ｘ BCC Ｘ code PC, etc. Ｓ Ｅ Ｌ Ｃ Client system Ｔ Ｔ Client Host Res- Ｒ Ｆ Date Time Ｘ BCC Ｘ EL4511 ponse 　Example: Read individually (3rd item)

  • Page 32: Model Setup Information Read Command (Ri)

    E-880CM-1-E 　6.15 Model Setup Information Read Command (RI) 　6.15.1 Description This command allows you to read the model setup-related information in batch or individually. 00 : Read in batch (model code, model setup version, common ROM version, parameter status, adjustment made or not yet made, password set or not yet set) 01…...

  • Page 33: Local/Remote Select Command (Sm)

    E-880CM-1-E 　② Read individually (model code) Ｓ Ｅ Ｃ Ｌ Ｔ Ｔ Client Host Func. Ｆ Ｒ Host system Ｒ I Ｘ BCC Ｘ code PC, etc. Ｓ Ｅ Ｌ Ｃ Client system Ｔ Ｔ Client Host Res- Model Ｒ Ｆ Ｘ BCC Ｘ...

  • Page 34: Mode Select Command (Mc)

    E-880CM-1-E 　6.17 Mode Select Command (MC) 　6.17.1 Description With this command, you can select RUN, SET, or SYS mode, similar to the way you operate the basic EL4501 with keys. A password is included in a message. It is ignored if the password function is set in the "OFF". If the password is invalid with the password setup in the "ON", then the current mode remains unchanged.
  • Page 35 E-880CM-1-E 　② SET → Scaling Ｓ Ｅ Ｌ Ｃ Ｔ Ｔ Client Host Func. Ｒ Ｆ Host system M C Password Ｘ BCC Ｘ code PC, etc. Ｓ Ｅ Ｌ Ｃ Client system Min.  Min.  Min.  Ｔ Ｔ Client Host Res- Ｆ Ｒ Ｘ BCC Ｘ...

  • Page 36: Computer Status Read Command (Rc)

    E-880CM-1-E 　6.18 Computer Status Read Command (RC) 　6.18.1 Description This command allows you to read in batch or individually the data indicating the operating status of the of the EL4511. 00 : Batch read 　 01… : Read respective items individually Function Description Data format...

  • Page 37: Sys Mode Calendar Read Command (Rd)

    E-880CM-1-E 　6.19 SYS Mode Calendar Read Command (RD) 　6.19.1 Description With this command, you can read the calendar setting, or the date and hour displayed on the mode select menu screen. Any mode, including SYS mode, is valid for this command. 00: Batch read 01: Date 02: Year...

  • Page 38: Sys Mode Calendar Write Command (Wd)

    E-880CM-1-E 　6.20 SYS Mode Calendar Write Command (WD) 　6.20.1 Description With this command, you can write the date and time of calendar setting in the SYS mode. Modes other than SYS mode are invalid. 00: Batch read 01: Date 02: Year 03: Month 04: Day 05: Time...

  • Page 39: Sys Mode Total Counter Reset Command (St)

    E-880CM-1-E 　6.21 SYS Mode Total Counter Reset Command (ST) 　6.21.1 Description With this command, you can reset the total counter readings in the SYS mode, either in batch or individually. Modes other than SYS mode are invalid. 00: Batch 01: Total 1 02: Total 2 03: Total 3 With a model having no more than two total counters, an attempt to implement code 03: Total 3 will result...

  • Page 40: Sys Mode Simulated Analog Output Command (Sa)

    E-880CM-1-E 　6.22 Simulated Analog Output SYS Mode Analog Output Command (SA) 　6.22.1 Description With this command, a simulated analog output can be produced by setting up the value for simulated analog output available in the SYS mode. Modes other than SYS mode are invalid. Following a command reception and sending its response, the analog output is updated.

  • Page 41: Special Commands (Sc) With El4401

    E-880CM-1-E 　6.23 Special Commands (SC) with EL4401 　6.23.1 Function Codes 00 through 04 　 （1） Description This command allows you to batch read the settings in the parameter setup mode (data: liquid kind, density, and density unit). 00: Batch read 01: Read liquid kind of liquid A 02: Read density and density unit of liquid A 03: Read liquid kind of liquid B...

  • Page 42: Function Codes 05 Through 07

    E-880CM-1-E 　6.23.2 Function Codes 05 through 07   （1） Description This command allows you to batch write the settings in the parameter setup mode (data: liquid kind, viscosity, viscosity unit, density, and density unit). (For codes assigned to units, see Section 10. CODES ASSIGNED TO UNITS.) 05: Batch write 06: Write liquid kind of liquid A 07: Write density and density unit of liquid A...

  • Page 43: Special Commands (Sc) With El4501 And El4511

    E-880CM-1-E 　6.24 Special Commands (SC) with EL4501 and EL4511  6.24.1 Function Codes 00 through 03   （1） Description This command allows you to batch read the settings in the KEY card (data: liquid kind, viscosity, viscosity unit, density, and density unit). 00: Batch read 01: Read liquid kind 02: Read viscosity and viscosity unit...

  • Page 44: Function Codes 04 Through 07

    E-880CM-1-E 　6.24.2 Function Codes 04 through 07   （1） Description This command allows you to batch write the settings in the KEY card (data: liquid kind, viscosity, viscosity unit, density, and density unit). The KEY card is primarily intended for use as substitute for the key. However, since it cannot play this role in data communication, a write lock with a password is made to serve as substitute for the key.

  • Page 45: About Bcc / Sumcheck

    E-880CM-1-E 7. ABOUT BCC / SUMCHECK 　A check data may be added to the message at the communication setup menu in the SYS mode. ① BBC check This data can be determined by exclusive ORing (XOR) all characters from next "STX" through "ETX" in the message below.

  • Page 46: About Cr/Lf

    E-880CM-1-E 8. ABOUT CR / LF 　CR or LF may be added to the end of a message in your SYS mode communication setup. 　① ＣＲ＋ＬＦ Ｓ Ｅ Ｌ Ｃ Ｔ Ｔ Client Host Func. Ｒ Ｆ Host system Ｘ BCC S M Ｘ...

  • Page 47: About Duration Between Messages

    E-880CM-1-E 9. ABOUT DURATION BETWEEN MESSAGES The duration required from the time the host system issues a command until the EL4001 issues a response data is about 100 to 300ms. Host system ＥＬ４００１ Command 100 to 300ms approx. Response Execution of 01: Remote (keystrokes unacceptable) command in the local/remote select command (SM) involves sending a response data as a result of switching from one screen to another.

  • Page 48: Codes Assigned To Units

    E-880CM-1-E 10. CODES ASSIGNED TO UNITS Decimal Measuring Applica- Decimal Measuring Applica- Decimal Measuring Applica- CODE CODE CODE Point unit tion point unit tion point unit tion kg/h /min (std) t/min /h (std) mmH20 ml/min (std) lb/min ml/h (std) lb/h kl/min (std) g/cm ton (US) /min...

  • Page 49: Ascii Code

    E-880CM-1-E 11. ASCII CODE NUL DLE ＠ SOH DC1 STX DC2 “ ETX DC3 ＃ EOT DC4 ＄ ENQ NAK ％ ACK SYN ＆ ‘ BS CAN （ ） ＊ ； ＋ ； → ＜ ￥ ｜ ← － ＝ ↑...
  • Page 50 E-880CM-1-E 2018.12 Revised 2011.04 Revised △ 2008.09 Released All specifications are subject to change without notice for improvement. E-880CM-1-E （2）...

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