Technical data

Configuration software for SINAUT ST7
1.6 Configuring networks and network nodes in STEP 7 / NetPro
Software
System Manual, 07/2009, C79000-G8976-C222-07
69
– Number = 1 .. 255 in polling mode:
Maximum 1-255 spontaneous messages pending at the time of the first polling
message are transferred.
In a dial-up station, the
Number of spontaneous messages parameter decides after how
many messages the master station has the opportunity of transferring its pending
messages to the station.
●
Limit for locked messages :
This parameter can only be set for dial-up networks and specifies the maximum
percentage of locked messages in the send buffer. If this percentage is exceeded, the
image method will be used for all new locked messages arriving. This prevents an
overflow of the send buffer.
Messages are marked as locked if they can no longer be transferred to the addressees
due to communication problems (known as the data brake).
Range of values: 0 ... 90% (If 0 is entered, the default setting is used)
Default: 50%
Dedicated Line tab
The Dedicated Line tab contains special parameters required only when using dedicated
lines.
Figure 1-35 Properties - SINAUT Dedicated Line TIM dialog, Dedicated Line tab
The parameters for dedicated lines include: