With the channel button ( channel 1 ...12 ) on the bottom following settings are possible :

If there are several network adapters in the PC the corresponding adapter to be tested has to be selected here.

Here the suitable protocol ( e.g. TCP/IP ) for the test must be selected.

The name of the PC declared during the network installation is displayed here. It can be set via the network settings in the Windows system control. ( No input is possible, it is only a display field ! )

The IP-address allocated to the network adapter is displayed here. It can be set via the network settings in the Windows system control. ( No input is possible, it is only a display field ! )

If no IP address is displayed when opening the register card, the network is not correctly installed in Windows or the connection to the network hub or switch does not exist.

When LIAN 98 is used as client ( RTI simulation ) the port number = 0 must be entered. During the establishment of the client connection a free port address will be allocated to LIAN 98 automatically.
When LIAN 98 is used as server ( RTU simulation ) the port number = 502 must be set.

When LIAN 98 is used as client ( master simulation ) the port number of the station to be tested must be entered. Normally it is the port number = 502.
When LIAN 98 is used as server ( slave simulation ) the port number is not relevant.

Recommendation : 100 msec
LIAN 98 waits this time until it will continue processing all network packets received in this time. Also the end of the transmission is detected with the timeout.

All telegrams to be sent are provided with the station address of the SIM list during master simulation.

Exception :
. If the station address 255 is inserted in a telegram of the TDB buffer, the telegram will be transmitted with the address = 0 ( "BROADCAST message to all server" ).
. If a server address of the server list is inserted in the telegram it will be transmitted unchanged with this inserted address.

This is the IP address of the default server with which one will test mostly.

[ sec ] Network connection establishment timeout
Timeout for the establishment of the connection with the server.

[ sec ] Response timeout
This parameter defines the time in seconds that LIAN 98 waits maximum for an acknowledge from the server.

0 - 255

Via this parameter it is defined how many times the transmission is to be repeated when the response is missing.

1 ( fixed )

 

yes / no

If the parameter is activated, it is assumed that all stations are connected through a router and therefore all have the same IP address. ( Modbus NET -> Modbus RTU seriell )

Multi-Server operation :
All servers ( max. 32 stations ) to be processed by LIAN 98 must be inserted in the server list. LIAN 98 will make a connection to all this servers during the master simulation.

In order to insert the addresses please proceed as follows :

"Activate "Insert server addresses" ( button "insert" will be displayed ).
Insert in the fields "Unit Identifier" / "IP Address" the station to be entered in the server list.
Take over the addresses into the server list by clicking "insert".
When all stations are inserted, please deactivate "insert server addresses" ( button "insert" disappears ).

In order to delete a station out of this list select it and click "delete".

yes / no

When the RTI simulation is activated, LIAN 98 starts automatically with the request of the user data. If this requests are not wanted it can be deactivated here.

Number of the TDB buffer containing the first request message.

Number of the TDB buffer containing the last request message.

If this buffer number ( e.g. equal 0 ) smaller than the number of the TDB buffer "from", only the request telegram in the field "from " is used.

0 - 30 000 msec

This parameter determines the time that the program LIAN 98 delays the next request.

All telegrams to be sent will be provided with the station address out of the SIM list during slave simulation.

[ sec ]
Only important for the client !

1 ( fixed )

 

yes / no

0800H ( fixed )
This field indicates the type of the MAC clients protocols. The internet protocol ( IP ) is used for protocol Modbus NET.
( No input is possible, it is only a display field ! )

4 ( fixed )
This field indicates the format of the IP Headers. Version = 4 ( IPv4 ) is used for protocol Modbus NET.
( No input is possible, it is only a display field ! )

6 ( fixed )
This field indicates the protocol of the next level that is used in the data section of the internet datagram.
The transmission control protocol ( TCP ) is used for protocol Modbus NET
( No input is possible, it is only a display field ! )

IP address of a Modbus NET-Client ( Master station ). The network traffic between this client and the server(s) will be recorded. The required stations must be indicated in the server list and the PC must be connected with the client over the same network hub.

Use this field to enter the IP addresses of the servers in the server list.
When the server list is empty all server connections will be captured.

Use this field to enter the port numbers of servers in the server list.
( Port = 502 is normally used for Modbus NET )

Each particular server to be captured must be inserted in the server list. LIAN 98 will use this list to prefilter the network traffic.If no server address is inserted all IP addresses will be captured.

In order to insert the addresses please proceed as follows :

Activate "Insert server addresses" ( button "insert" will be displayed ).
Enter the IP address and port number to be inserted in the fields "IP address server" / "Port number server". Take over the addresses in the server list with "insert". When all stations are inserted deactivate "Insert server addresses". ( The button "insert" disappears ).

In order to delete a server out of this list select it and click "delete".

yes / no

When this parameter is activated, the LIAN 98 starts the "Modbus NET Server" with router function for the associated channel and waits for the establishment of the connection with the client. The assignment to the channel is set in the configuration ( KNF ) over the parameter "simulation list".
( see : MODBUS Network : RTU ( Server/ Slave )-Simulation )

With this parameter the telegram format of the connected substation is selected ( Modbus RTU-Mode serial ).

All connected substations which should be taken into account from the LIAN 98 router have to be entered into the station list.

In order to insert the addresses please proceed as follows :

activate "insert routing addresses" ( button "insert" is displayed ).
Insert in the fields "Station Address" / "Channel number" the station to be entered. Take over the address by clicking "insert". When all stations are inserted please deactivate "Insert routing addresses" ( button "insert" disappears ).

In order to delete one or more stations out of this list select it and click "delete".

Filter released

yes / no

With this option monitoring filters already set for one channel can be deactivated temporarily without deleting them.

protocol specific filter mask

Here monitoring can be filtered for telegram specific values in which several OR-linked filter masks can be defined for the channel.

yes / no

With this option action filters already set for one channel can be deactivated temporarily without deleting them.

protocol specific
filter mask

The action filter is described over telegram specific features corresponding to a filter setting. Additionally each action filter requires an allocation to a send buffer or alternatively to a send sequence.

In correspondence with the action filter the message buffer "from" or the message buffers "from/ till" are to be sent.

In correspondence with the action filter the send sequence is to be started at line number "from" or to be started at line number "from" and to be ended at line number "till".

Start trigger released

yes / no

With this option start triggers already set for one channel can be deactivated temporarily without deleting them.

protocol specific
trigger mask

Here you can define telegram specific start triggers for monitoring in which several OR-linked triggers can be defined for the channel.

Stop trigger released

yes / no

With this option stop triggers already set for one channel can be deactivated temporarily without deleting them.

protocol specific
trigger mask

Here you can define telegram specific stop triggers for monitoring in which several OR-linked triggers can be defined for the channel.

Everything is displayed : Telegram header and information elements

No header is displayed : Only information elements are displayed.

No information element is displayed : Only telegram header is displayed.

Error during writing on the network, system error e.g. socket failure. 

The captured length is not equal to the packet length.

The length of the MAC Header is incorrect or the data packet is not be interpretable.

The length of the IPv4 header is incorrect.

The length of the TCP header is incorrect.

The length of the user data is not equal to the length of the ADU ( Application Data Unit ). The length of the MAC, IP or TCP header could also be incorrect.

The protocol MODBUS provides no start byte for the identification of the telegram start. Therefore the receive routine checks the MBAP header on plausibility. When this plausibility check fails, a synchronization error is noted and the telegram is entered into the PRO File.

The function code in the telegram is wrong.

The received server address is incorrect or the entry in the SIM list is wrong.

The respond at this time was not expected.

The received "Transaction Identifier" ( send sequence number ) is wrong or a message is missing.

Total length of the Process Image

maximum 64 kByte ( 0000... FFFF ) = 65536 bytes

 

Starting address of Coils

0... 65535

 

Length of Image for Coils

maximum 16 kByte

 

Starting address of Discrete Inputs

0... 65535

 

Length of Image for Discrete Inputs

maximum 16 kByte

 

Starting address of Holding Registers

0... 65535

 

Length of Image for Holding Registers

maximum 16 kByte

 

Starting address of Input Registers

0... 65535

 

Length of Image for Input Registers

maximum 16 kByte