Technical data

Configuration software for SINAUT ST7
1.6 Configuring networks and network nodes in STEP 7 / NetPro
Software
78 System Manual, 07/2009, C79000-G8976-C222-07
When using MD4 modems in ISDN networks, it is only possible to operate at a transmission
speed of 9600 bauds with the standard setting and not at the maximum speed of 38000
bauds.
If the maximum speed of 38000 bauds is to be used with MD4 modems in pure ISDN
networks, the
$P1 entry in the standard string must be replaced by $P5 .
This changes from the V.110 transmission mode to the X.75 mode allowing a transmission
rate up to 38000 bauds.
When using MD4 modems, note the following if you change the telephone number later:
Note
Since the MSN number is automatically added to the generated AT string with the MD4
modem, if you change the telephone number later, remember that the MSN number in the
AT string for the MD4 modem may need to be modified manually.
1.6.8 Plausibility check of the network configuration
A plausibility check of the configured network is performed either when the network is stored
with the
Save and Compile... function or when the consistency check is started directly from
the
Network / Check Consistency menu. The following is reported:
● Subscribers not connected to a any subnet
● Subnets with only one subscriber
● Inconsistent connections, for example due to the wrong WAN protocol
The following are also checked for SINAUT networks:
● Compatibility of the connected modem types with each other
● Compatibility of the connected modem types with the network parameters
The following is checked for SINAUT dedicated line networks:
● The parameter assignment of a master station for the dedicated line network
● The existence of more than one master station for the dedicated line network in polling
mode
Note
If SIMATIC S7-300 stations are connected only over the WAN, the following warning may be
displayed for the non-connected MPI nodes of a CPU in older STEP 7 versions: "CPU...
(Station ..): The subscriber (...) is not connected to a network."
This warning can be ignored.
To complete network configuration, the configured version must be saved with the Network /
Save
menu to allow other STEP 7 and SINAUT applications access to the configured data.