Technical data

Configuration software for SINAUT ST7
1.6 Configuring networks and network nodes in STEP 7 / NetPro
Software
70 System Manual, 07/2009, C79000-G8976-C222-07
● RTS/CTS delay time :
Setting the RTS/CTS delay time is required, for example when connecting a modem to
the RS-485 port of the TIM module. The value is necessary for the RTS/CTS delay time
can be found in the descriptions of the modems.
Range of 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.
●
Polling monitoring time :
Specifies the latest time after which a station or node station TIM expects to be polled. If
the TIM is not called after this time, it sends a message to its local CPU indicating that the
master station is disrupted.
Range of values: 0 .. 65535 s
Default: 0 (0 means no monitoring)
Even if no monitoring is set here, the TIM module registers the message traffic over the
WAN and automatically sends the same fault message to its CPU if it does not register
any message traffic for several seconds. If a maximum message length of 240 bytes is
set, a with a retry factor of 3 and a transmission rate of 9600 bauds, the message is sent
after approximately 4 seconds without message traffic, and at a transmission rate of 1200
bauds, after approximately 32 seconds.
●
Send delay time :
The send delay time is used only when the CTS signal comes from the modem
(RTS/CTS time delay 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 offset times are required 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 .. 65535 ms
Default: 0
●
Max. allowed disruption time (TIM 4R-IE only):
Here, you can enter the tolerance time for a connection disruption detected by the TIM. If
there is still a disruption on the connection when the set time has elapsed, the disruption
is signaled to all connection partners of the disrupted station.
Range of values: 0 ... 255 seconds
Default: 0
If disruptions occur frequently in networks (for example in some wireless networks), it
may be helpful to increase the allowed disruption time without increasing the repetition
factor for messages (see also properties dialog
Dedicated line , Network settings tab).
Increasing the allowed disruption time delays signaling of station failures and so reduces
the number of organizational messages when stations return.
●
Ratio polling / spontaneous :
This output box displays the number of spontaneous messages that can be sent by a
master station between two polls.
Range of values: 0 .. 255
Default: 1