B&K 1787B, 1786B, 1788 Remote Operation Mode, IT-E131 Communication cable, Communication setting

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Chapter 4 Remote Operation Mode

The DB9 interface connector on the rear panel of the power supply can be transferred to RS-232 interface, the following information will tell you how to use the computer to control the output of the power supply.

4.1 IT-E131 Communication cable

The DB9 interface connector on the rear panel of power supply is TTL voltage level; you can use the communication cable (IT-E131) to connect the DB9 interface connector of the power supply and the RS-232 interface connector of computer for the communication.

Computer side

TTL? RS232 Cable (IT-E131)

PS side

PC

PC

IT-E131 communication cable

Power supplyLoad

COMPUTER	IT	IT-E131 ISOLATED		TX	INSTRUMENT
	IT	COMMUNICATION CABLE		RX
				RX
	RS232	ISOLATION	TTL(5V)
	859666668889942311

Note: It will not work if you connect the DB9 interface connector of the power supply to the RS232 interface connector of computer directly by a standard RS232 cable. Please use IT-E131 to connect them.

4.2 Communication setting

Before using the remote operation mode, please make sure that the baud rate and communication address in power supply are the same as in the computer software, otherwise, the communication will fail, you can change the baud rate and communication address from the front panel or from computer.

1. Address: the range is from 0 to 254, default setting is 0

2. Baud rate: 4800,9600,19200 and 38400 are selectable, default setting is 9600

3. Data bit: 8 bit

4. Stop bit: 1

5. Parity: None

PARITY = NONE

Start

Bit

8 Data Bits

Stop

Bit

19

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Contents Page Content Protection from electric shock About your safetyQuick Reference General informationIntroduction Certification and WarrantyCertification Front Panel at a Glance Menu description Function keys descriptionDisplay annunciators Cal Rear Panel at a GlanceCheck the list of supplied items Connect the power cord and turn on the power supplyQuick Start Preliminary CheckoutVoltage Output Checkout Output CheckoutCurrent Output Checkout Verify the power-line voltage setting If the Power Supply Does Not Turn OnTo Adjust the Carrying Handle Verify that there is AC power to the power supplyBench-top viewing positions Carrying position To Rack Mount the InstrumentSpecifications SpecificationsMaximum input power Supplemental CharacteristicsEnvironmental Conditions Unit mmFront-panel Operation Overview Front-panel OperationConstant Voltage Operation Set Maximum voltageMAX Volt Constant Current OperationSaving and Recalling Operation Menu OperationInitiating the Output Voltage Init Volt Setting the Key SoundKEY SoundSetting the Baud RateBAUDRATE Initiating the Output stateINIT OUTSetting password for function keysKEY Lock Setting Address AddressCommunication setting Remote Operation ModeIT-E131 Communication cable Description Setting the remote control mode 20HFrame format Communication protocolSetting the maximum output voltage 22H Setting the output state ON/OFF 21HSetting the output voltage 23H Setting the communication address 25H Setting the output current 24HReading the calibration state 28H Entering the calibration mode 27HCalibrate the current value 2BH Calibrating the voltage value 29HSave the calibration data to Eeprom 2DH Setting calibration information 2EHReading calibration information 2FH Enable the local key 37H Restore the factory default calibration data 32HReturn information of command operation in power supply 12H Calibration Finish calibrating ConfigurationVoltage calibration Current calibrationInstallation Reset to the default calibration settingsPV1785B1788 Software Functions of PV1785B1788 Status bar 1Configure the systemQuickly setting Setting Voltage and current4. GO/NG Test Function Program settingChart Description Present Voltage/Current ChartSave and Open Page Limited One-Year Warranty Service Information USA