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Configuration in STEP 7
5.6 Configuring networks and network nodes in STEP 7 / NetPro
● WAN protocol:
For DNP3 dedicated lines, this parameter has the default setting "DNP3" and this cannot
be changed.
For DNP3 dial-up networks, select the setting "FT3".
● Retry factor:
This value decides how often a message that has not been acknowledged positively is
repeated.
For DNP3 dedicated lines, this parameter has the default setting 3 and this cannot be
changed.
For dial-up networks, the following values can be configured: 0 ... 15
● Max. message length (in bytes):
For DNP3 dedicated lines, this parameter has the default setting 240 (bytes) and this
cannot be changed.
For dial-up networks, the following values can be configured: 40 ... 240
Default setting: 240
For DNP3 networks the parameter has no significance except that with values < 240, PG
routing does not work. It is recommended that you use the default value of 240.
Connection
In the Connection box, you can set the following parameters:
● Connection type:
Range of values: Half duplex, duplex
Default: Duplex
Note
Half duplex must not be configured if the "Unsolicited transfer" function is enabled (see
also the properties dialog of the TIM > "Interfaces" tab > "DNP3 parameters" dialog
>"DNP3 basic parameters"), refer to the section "DNP3 parameters" dialog (Page 123).
● Baud rate:
This is the transmission speed at which the TIM and modem communicate. The
transmission speed in the current network is decided by the modem and is normally
identical to the speed of the modem.
If the modem is to be operated at a speed that is not prespecified, the next higher speed
needs to be set here (for example19200 bps if the modem operates at 14400 bps).
94
interpreted by the TIM as a short acknowledgment.
example: Bad wireless link
System Manual, 12/2015, C79000-G8976-C253-04
TIM DNP3
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