Configuration in STEP 7
5.6 Configuring networks and network nodes in STEP 7 / NetPro
TIM DNP3
104 System Manual, 12/2015, C79000-G8976-C253-04
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Setting the RTS/CTS delay time is required, for example when connecting a modem to
the RS-485 interface of the TIM module. The values necessary for the RTS/CTS delay
time can be found in the descriptions of the modems.
Possible values: 0 .. 65535 ms
Default: 0
– RTS/CTS delay time = 0:
After setting the RTS signal, transmission only starts when the CTS signal was set by
the modem.
– RTS/CTS delay time > 0:
Transmission is not delayed until the CTS signal of the modem. After the RTS signal
has been set, transmission is delayed for the selected time and then started
immediately.
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Master monitoring time [s]:
Monitoring time for the DNP3 master station. Within the configured time, the TIM expects
a signal from the DNP3 master station at the application layer.
If the TIM does not receive a signal from the master station during this time it assumes a
fault on the master station, outputs an error message to the diagnostics buffer and, if
configured, sets the relevant bit in the PartnerStatus system object to zero. The
configured value is transferred to the connected DNP3 master stations.
When the monitoring time has elapsed, the master station must send a 'Daily
Measurement' message to the station that must be acknowledged by the station. If the
station does not reply to the message, it is classified as being unreachable by the master
station.
Range of values: 0...65 535
Default: 0 (no monitoring)
Note: This mechanism can also be used for monitoring passive redundant paths.
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The send delay time is used only when the CTS signal comes from the modem
(RTS/CTS delay time parameter = 0). As soon as the CTS signal comes from the
modem, the send delay time is started. Data transmission is started only after this time
elapses.
This parameter is required, for example, when additional times are necessary to allow
repeaters to start up on wireless links prior to starting data transmission.
If 0 is entered, no send delay time is used.
Range of values: 0 to 65 535 ms
Default: 0
● Max. allowed disruption time:
This parameter cannot be configured for DNP3 and has no significance.
● Ratio polling / spontaneous:
This parameter cannot be configured for DNP3 and has no significance.