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Preface 

Thank you for choosing our 70D Series Ethernet model (GD-70D-EA/SD-70SC-ET, hereafter GD-70D-EA 
is described as a representative of both). 
 
This communication function manual explains how to use the Ethernet communication function of 
GD-70D-EA. Not only the first-time users but also the users who have already used the product must read 
and understand the operating manual to enhance the knowledge and experience before using the product. 
 
Note that the communication function of GD-70D-EA is part of communication devices forming the network 
system on the field. 
Please be sure to read the operating manuals of related equipment. 
 
 

Limitation of Responsibilities 

We shall not take any responsibilities of the results caused by the program of other devices that 
communicates with this product. 
 
 

Notation of numerical number 

 
Decimal number: Numerical value only (1    100    1000, etc.) 
Hexadecimal number: With“0x” in front of the value (0x00    0x64    0x3EB, etc.) 
 
 

Definition of DANGER, WARNING, CAUTION and NOTE 

Definition of DANGER, WARNING, CAUTION and NOTE 

DANGER 

This message indicates that improper handling may cause serious damage on 
life, health or assets. 

WARNING 

This message indicates that improper handling may cause serious damage on 
health or assets. 

CAUTION 

This message indicates that improper handling may cause minor damage on 
health or assets. 

NOTE 

This message indicates advice on handling. 

 

Summary of Contents for 70D Series

Page 1: ...PT2E 1582 Gas detector head 70D Series Ethernet Model Communication Function Manual...

Page 2: ...he operating manuals of related equipment Limitation of Responsibilities We shall not take any responsibilities of the results caused by the program of other devices that communicates with this produc...

Page 3: ...een Authorized Users 24 2 4 Auto mailing function gas alarm fault alarm 36 3 Modbus TCP Communication Functions 38 3 1 Communication specifications 38 3 2 Register map 38 3 3 Command 43 3 4 Exceptiona...

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Page 12: ...If not PLC MODE 1 it is not possible to change all the items See 1 4 2 Setting the communication with PLC through the Web function for details of the setting method To quickly set a large number of de...

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Page 23: ...rized users CALIBREATION Zero Calibration Zero calibration Span Calibration Span calibration TEST Alarm Test Alarm test function Fault Test Fault alarm test function AUTHORIZED USERS Alarm Alarm setti...

Page 24: ...Password is not required Authorized user screen Authorized Users http xxx xxx xxx xxx login html Password is required Password setting Default password GD 70D 2 3 1 User screen User HOME Status screen...

Page 25: ...vent description and the Graph button if it contains trend graphs Clicking the Graph button displays a trend graph for 3 minutes before and after the occurrence of the alarm Clicking the Open Print Al...

Page 26: ...the Graph button in the Event History alarm history screen displays a trend graph for 3 minutes before and after the occurrence of the alarm Clicking the Open Print Page button opens a screen for prin...

Page 27: ...orized User The status including alarms of GD 70D EA is displayed in real time Information on alarm settings and sensors is displayed The status in which an alarm is activated can be reset by clicking...

Page 28: ...tamp event description and the Graph button if it contains trend graphs Clicking the Graph button displays a trend graph for 3 minutes before and after the occurrence of the alarm Clicking the Open Pr...

Page 29: ...king the Graph button in the Event History alarm history screen displays a trend graph for 3 minutes before and after the occurrence of the alarm Clicking the Open Print Page button opens a screen for...

Page 30: ...e calibration history can be viewed with ten records per page maximum 100 records through 10 pages Clicking the Open Print All button opens a screen for printing all records including pages not viewed...

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Page 35: ...ons 2 3 Web screen components 32 AUTHORIZED USERS Alarm screen Authorized User Alarm settings can be viewed and configured Clicking the Update button updates the configuration of GD 70D EA using setti...

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Page 37: ...2 Web Functions 2 3 Web screen components 34 Date Time screen Authorized User The date and time information can be viewed and configured...

Page 38: ...ized User Settings for GD 70D EA the tag number name of the unit location etc can be viewed and configured Clicking the Update button updates the configuration of the detector head using settings ente...

Page 39: ...AUTHORIZED USERS Network screen Authorized User In response to alarm fault events this sends Email notification of the event from GD 70D EA to predefined Email addresses Register a mail address of th...

Page 40: ...2 Web Functions 2 4 Auto mailing function gas alarm fault alarm 37 Sent Email sample First alarm triggered Flow rate abnormality alarm...

Page 41: ...low Address Writability Yes No Item Description 40001 Status bit0 3 Mode 0 Initial 1 Measuring mode 3 Inhibit 5 Test mode bit5 Fault flag bit6 Alarm 1st flag bit7 Alarm 2nd flag bit8 Alarm 1st alarm r...

Page 42: ...nh bit bit12 Initial bit11 Alarm RANGE OVER bit10 Smoke detection bit9 Alarm 2nd bit8 Alarm 1st bit7 Abnormalities Sensor bit6 Abnormalities Communication bit5 Abnormalities Flow rate bit4 Caution Flo...

Page 43: ...40046 Alarm setpoint 2 Signed integer Value obtained by turning the valid number of Alarm setpoint 2 into an integer Actual Alarm setpoint 2 is obtained by multiplying the integer by the decimal poin...

Page 44: ...blank is space 0x20 40105 40106 40107 40108 40109 40110 40111 40112 40113 40114 Customer code ASCII character string Left align blank is space 0x20 40115 40116 40117 40118 40119 Sensor serial number A...

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Page 47: ...nges from 40001 to 40256 3 4 3 When access to the address not within the range is specified Examples of data Query 000000000006010300FF0002 Read two registers from address 40256 Response 0000000000030...

Page 48: ...um connectable number of GD 70D EA units Communication setting Interval min 1000 msec PLC configuration recommended Maximum connectable number of GD 70D EA units CPU model Ethernet unit model Data typ...

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Page 53: ...0 msec Minimum time default 1000 msec With variation in concentration Maximum time default 3000 msec Without variation in concentration Max Maximum transmission interval Transmission interval in norma...

Page 54: ...etwork address of the PLC Setting value for MC specification Node Address Node address of the PLC Setting value for MC specification Detector Write Memory Address Memory address where writing to PLC s...

Page 55: ...0x8000 if no pyrolyzer heater provided 5 IP address Upper 16 bits First half of IP address Ex 0xC0A8 if IP address is 192 168 0 1 6 IP address Lower 16 bits Second half of IP address Ex 0x0001 if IP a...

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Page 58: ...ual first alarm setpoint is obtained by multiplying the integer by the decimal point code of Status 6 Second alarm setpoint Signed integer Actual second alarm setpoint is obtained by multiplying the i...

Page 59: ...85 94 111 Reserved Command data 86 112 Command execution status GD 70D EA 0 Normal state 1 Processing completed 87 113 Command execution result For Command 1 setting alteration Successful bit ON Faile...

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Page 62: ...2 Alarm type bit1 Subnet mask bit0 IP address For Command 2 and so on 0 Failure 1 Success Address Item Description GD 70D EA Reading area 0 15 Various setting data 16 Command execution status PLC 0 No...

Page 63: ...o ON at the same time Parameter bit Details bit15 Reserved Bit14 Reserved Bit13 Reserved Bit12 Sensitivity correction bit11 Date and time bit10 Zero follower bit9 Zero suppression type bit8 Zero suppr...

Page 64: ...Address For Basic Data Large Item Description GD 70D EA Reading area 0 49 22 71 Various setting data 50 72 Command execution status PLC 0 Normal state 1 Processing in progress 17 73 Command Set comman...

Page 65: ...rea address 40 Command execution status Basic Data Large GD 70D EA writing area address 41 Verify Command execution status PLC 0 normal state GD 70D EA setting data 500 Command code Set 1 setting alte...

Page 66: ...rge GD 70D EA writing area address 40 Command execution status Basic Data Large GD 70D EA writing area address 41 Verify Command execution status PLC 0 normal state Command code Set 3 Inhibit ON If In...

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Page 70: ...4 PLC Communication Functions 4 6 Specifications for communication setting through GD 70D EA main unit operation 67...

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