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

Each character has one start bit ( binary = 0 ), 8 information bits and normally one even parity bit and one stop bit ( binary = 1 ).

For each channel any COM port ( COM 1 till COM 24 ) can be selected.

An individual modem can be installed and connected for each channel. LIAN 98 is able to process up to twelve modems in the range of COM1 till COM24 simultaneously. Select here the modem assigned to the selected channel. Normally this assignment will be recognized by LIAN 98 and the corresponding modem will be set.

The settings of the modem must be executed via the windows control panel "telephone and modem options". With this button you can check the modem settings and see if they correspond to the LIAN 98 configuration.

0 ... 1000 msec
This parameter ist only used for the connection type "half duplex" and is determined by the initial transient behaviour of the used transmission equipment.
The RTS Leading defines the delay time from activating RTS signal to transmitting the first character and is used for modems whithout the hardware handshake signals "RTS and CTS". In this case the "RTS signal" must be led back over the "CTS line" to the PC with the help of a brazing bridge in the monitor cable. Dependent of the used modem it may be necessary to connect additionally the DTR-pin with the DSR-pin.
This function is deactivated if the "Leading and the Trailing" is set to NULL and therefore the control signals are analyzed diectly from the modem.

0 ... 1000 msec
This parameter ist only used for the connection type "half duplex" and is determined by the final transient behaviour of the used transmission equipment.
The RTS Trailing defines the delay time from the last character transmitted up to the RTS signal is deactivated.
This function is deactivated, if the "Leading and the Trailing" is set to NULL.

Transmission speed : 25 - 115200 baud ( variable )

8 bit ( fixed )

1 bit ( variable )

even ( variable )

1 - 9999 msec ( variable )

For this protocol the timeout must be kept as short as possible because the end of the telegram, respectively the beginning of the next telegram is detected with the timeout. As a basic rule the higher the baud rate the lower the timeout. For 19200 baud about 20 up to 30 msec.

The direction of the transmission can not be recognized on the basis of the telegrams. For this reason it is absolutely necessary to assign the correct direction to the channel. Otherwise the telegrams are marked as faulty ( see also above the explanation of the telegram structure ).

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.

1 - 30 000 msec

The Modbus standard specifies a fixed time out interval to be used for repeated frame transmissions. The time out interval and maximum number of retries are configurable and appropriate values will depend on the transmission system.

This parameter determines the time in milliseconds that the program LIAN 98 as master station at most has to wait for an acknowledge before the last transmission is repeated.

0 - 255

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

Multi-Point Traffic Line : ( party line )
All stations to be processed at this line have to be inserted into the server list. LIAN 98 establishes the connection to this stations ( maximum 32 servers ) and reqests continuously the user data of this stations.

In order to insert the addresses please proceed as follows :

Activate "Insert Server Addresses" ( button "insert" will be displayed ).
Insert in the fields "Station Address" the station to be entered in the server list.
Take over the address 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.

yes / no

yes / no

When this parameter is activated, the LIAN 98 starts the "Modbus RTU Master" with router function for the for the associated channel and establishes a connection to the substation. The assignment to the channel is set in the configuration ( KNF ) over the parameter "simulation list".
( see : MODBUS serial : RTI ( Master )-Simulation )

With this parameter the message format of the connected client/ master is selected. ( Modbus NET Client ).

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

In order to insert the channel numbers please proceed as follows :

activate "insert routing channel" ( button "insert" is displayed ).
Insert in the fields "Channel number" the channel to be entered. Take over the channel number by clicking "insert". When all channels are inserted please deactivate "Insert routing channels" ( button "insert" disappears ).

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

yes / no

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

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

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".

yes / no

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

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

yes / no

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

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.

Within a telegram, there may be no pause between characters. In case of timeout occurs it is assumed that it is the end of the telegram and the telegram check is started. The sensitivity can be parameterized in the configuration ( timeout ).
Normally a time out is no error, but it is stored in the Pro file together with the initial error for a better analysis of the faulty transmission line in connection with a line error.

Error during writing on the COM port. May be it is already occupied by another program.

The length of the telegram is wrong.

Die Telegrammprüfsumme ( CRC16 ) im Prüfwort stimmt nicht.

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

Error message from the UART. This error is noted only in the PRO file.

Error message from the UART. This error is noted only in the PRO file.

Error message from the UART. This error is noted only in 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.

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