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A&D GH-120/GH-200/GH-300/GH-202/GH-252 15. Standard Input and Output Interface

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15. Standard Input and Output Interface

15.1. RS-232C Interface

The balance is a DCE device. Connect the balance to a personal computer (DTE) using a

straight through cable.

Transmission system : EIA RS-232C

Transmission form : Asynchronous, bi-directional, half duplex

Transmission rate : 10 times/second or 5 times/second (same as data refresh rate)

Data format : Baud rate : 600, 1200, 2400, 4800, 9600, 19200bps

Data bits : 7 or 8 bits

Parity : Even, Odd (Data bits 7 bits)

None (Data bits 8 bits)

Stop bit : 1 bit

Code : ASCII

D-Sub 25 pin assignments

Pin No. Signal name Direction Description

1

-

-

No connection

2 TXD Output Transmit data

3 RXD Input Receive data

4

-

-

No connection

5 SG

-

Signal ground

6 DSR Output Data set ready

7 RTS Input Request to send

8 CTS Output Clear to send

9

-

-

No connection

Signal names of the balance side are the same as

the DTE side with TXD and RXD reversed.

Star

t

bi

t

Data bits

Parity bi

t

Stop bi

t

-5V to -15V

+5V to +15V

RS-232C

#4-40UNC

Balance side

DCE

Computer side

DTE

Inside of balance Terminal example

+5V

3.3

k

Ω

TXD 2

RXD 3

RTS 7

CTS 8

DSR 6

SG 5

RXD

TXD

RTS

CTS

DSR

SG

Contents

Main Analytical Balance GH-120 GH-200 GH-300 GH-202 GH-252 Page Contents Page 1. Introduction 1.1. About This Manual 1.2. Features 1.3. Compliance 1.3.1. Compliance With FCC Rules 1.3.2. Compliance With EMC Directives Page 2. Unpacking the Balance 2.1. Installing the Balance 3. Precautions 3.1. Before Use 3.2. During Use 3.3. After Use 3.4. Power Supply 4. Display Symbols and Key Operation Display Key operation 5. Weighing Units 5.1. Units Page Page 5.2. Changing the Units 5.2.1. Unit setting example 6. Weighing Precautions for the weighing operation 6.1. Basic Operation (Gram Mode) 6.2. Dual Range 6.3. Counting Mode (PCS) Selecting the counting mode Storing a sample unit mass (Weighing input mode) Counting operation Counting mode using the ACAI function 6.4. Percent Mode (%) Selecting the percent mode Storing the 100% reference mass Reading the percentage 7. Response Adjustment 7.1. Automatic Response Adjustment 7.2. Manual Response Adjustment 8. Calibration 8.1. Calibration Group Calibration Calibration test Correction of the internal mass value Automatic self calibration due to changes in temperature Caution 8.3. One-Touch Calibration 8.4. Calibration Test Using the Internal Mass 8.5. Calibration Using an External Weight 8.6. Calibration Test Using an External Weight 8.7. Correcting the Internal Mass Value 9. Function Switch and Initialization 9.1. Permit or Inhibit 9.2. Initializing the Balance 10. Function Table 10.1. Setting the Function Table Display symbol and keys Setting procedure Setting example 10.2. Details of the Function Table Page Page 10.3. Description of the Class "Environment, Display" Condition ( Cond ) Stability band width ( 5t-b ) Zero tracking ( trc ) Display refresh rate ( 5pd ) Decimal point ( pnt ) Key mode Auto print modes A and B Auto print modes A Auto print modes B Stream mode Interval memory mode 10.5. Description of the Item "Data Format" A&D standard format 5if type 0 DP (Dump print) format 5if type 1 KF format 5if type 2 MT format 5if type 3 NU (numerical) format 5if type 4 CSV format 5if type 5 ID number dout 5-id 1 Data number dout d-no 1 Date dout 5-td 2 or 3 Time dout 5-td 1 or 3 Stable Unstable Overload Units 10.7. Clock and Calendar Function Operation Confirming the time Setting the time Confirming the date Setting the date Quitting the operation 11. ID Number and GLP Report 11.1. Setting the ID Number 11.2. GLP Report Calibration report using the internal mass Calibration test report using an internal mass Calibration report using an external weight Calibration test report using an external weight Title block and end block 12. Data Memory 12.1. Notes on Using Data Memory Releasing "Clr" or "err" 12.2. Data Memory for Weighing Data Storing the weighing data Caution Setting the function table Enabling the data memory function Recalling the memory data Transmitting all memory data at one time Deleting all memory data at one time 12.3. Data Memory for Calibration and Calibration Test Storing the calibration and calibration test data Transmitting the memory data Deleting data stored in memory 13. Underhook 14. Density Measurement Formula to obtain the density Prior to measurement: Changing the function table Entering the density of a liquid Entering the water temperature (ldin 0) The relation between the water temperature and density Entering the density directly (ldin 1) Measuring the density 15. Standard Input and Output Interface 15.1. RS-232C Interface D-Sub 25 pin assignments 15.2. Connection to Peripheral Equipment Connection to an AD-8121B printer Connection to a computer and the use of WinCT Using Windows Communication Tools Software (WinCT) RsCom RsKey Using the WinCT software, the balance can do the following: 15.3. Commands 15.3.1. Command List 15.3.2. Acknowledge Code and Error Codes 15.3.3. Control Using CTS and RTS Ct5 0 Ct5 1 15.3.4. Settings Related to RS-232C 15.3.5. Command Examples ON command (turning on the balance) R command (Re-zeroing the display) CAL command (Calibration with internal mass) Error code Weighing with a tare Setting a negative target value and filling with a sample until the display becomes zero 16. Maintenance 16.1. Treatment of the Balance 16.2. Error Codes C l r 16.3. Other Display 16.4. Checking the Balance Performance and Environment Checking that the operating environment or weighing method is proper Operating environment Weighing method Sample and container Checking that the balance performs properly 17. Specifications 17.1. External Dimensions 17.2. Options and Peripheral Equipment GH-02 USB interface GH-08 Ethernet Interface AD-8121B Printer AD-1653 Density Determination Kit AD-1683 DC Static Eliminator AX-USB-9P-EX USB Converter AX-T-314A-S External key Plug AX-SW128 Foot switch Other options 18. Terms/Index 18.1. Terms 18.2. Index