User manual

IEC61131 User and Reference Manual
April 22, 2008
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The Hold Time parameter specifies the time, in milliseconds, that the driver will hold RTS
after the last character is transmitted. This is useful for devices that immediately end
transmission when RTS is turned off. The value of this field must be smaller than the Time
Out value set in the General parameters dialog. For example, if the Timeout value is set to 3
seconds, the CTS Delay Time can be set to 2999 milliseconds or less. The minimum value
for this field is 0 milliseconds. The value is initially set to 0 by default.
 Click Restore Defaults to restore default values to all fields on this page.
Modbus RTU Configuration (Dial Up)
Dial Up parameters are used to configure a dial up connection. When Dial Up is selected for
Connection Type the Dial Up tab is added to the Modbus RTU Configuration dialog. When
the Dial Up tab heading is clicked the Dial Up dialog is opened as shown below.
Figure 23: Modbus RTU Configuration (Dial Up)
The Dialing Prefix parameter specifies the commands sent to the modem before dialing. A
maximum of 32 characters can be entered. All characters are valid. The default value is
“&F0 &K0 S0=1 &W0 &Y0”.
The Phone Number parameter specifies the telephone number of the remote controller. A
maximum of 32 characters can be entered. All characters are valid. This field‟s default value
is blank.
The Dial Type parameter specifies the dialing type. Valid values are Pulse and Tone. The
default value is Tone.