AB Soft TDW-33 manual … Frequently used settings for PLC-systems

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…  Frequently used settings for PLC-systems

PSTN

Network

Most PLC-systems and other industrial applications where modems are used require the same changes to the standard settings.

The most commonly encountered problems concern speed, parity and control signals from the connected equipment.

If this action does not solve the problem the modem’s answering codes and possible echoing of commands might be the source of the difficulty.

Below follows a list of commands that might resolve the problems.The commands may of course be placed on one single command line if desired.

Configure the TDW-33 connected to the PLC

AT&F

Set the unit to factory default.

ATV0

Gives the answering codes in short format. (digits)

ATQ1

No result codes are sent on the RS-232/V.24 connection.

ATE0

Commands that are sent from the terminal/computer etc. are not echoed

 

back to the RS-232/V.24 connection.

AT&C1

DCD will follow the carrier on the line.

AT&K0

No hand shaking.

AT&A1

Character abort option on.

AT&W

Store default settings.

6619-2202

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Contents TDW-33 Legal information Care recommendations SafetyMaintenance Before mounting, using or removing this unitAccording to TIA-968-A and CS-03 Part 1, issue Agency approvals and standards complianceType Approval / Compliance Westermo Data Communication Inc Electrical Safety AdvisoryDeclaration of Conformity Declaration of conformityESD Type tests and environmental conditionsDescription RS-232 Interface specificationsPower LV Public Switched Telephone Network PstnRS-232 DCE Power LVStatus Description LED IndicatorsMounting CoolingRemoval Windows configuration tool TD-Tool AT-CommandsConfiguration Set up the connection The answering modem … TDW-33 connected to TDW-33 with DTR signal callConfigure the units Set up the connection The dialling modemConfigure the TDW-33 connected to the PLC … Frequently used settings for PLC-systemsDefine callback number Configure the TDW-33… TDW-33 Secure Call-back AT*WCB=4Configure the TD-36 ConnectNo Carrier Configure the TDW-33 connected to the power meter … TDW-33 Silent answering on predefined numberAT*WCID=3,3 Page Subsidiaries

TDW-33 specifications

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