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 )

All telegrams to be sent are provided with the RTU number out of the SIM list during master simulation. If a number unequal zero is inserted in the telegram ( TDB buffer ), the telegram will be transmitted unchanged with this RTU number already inserted.

1 - 30 000 msec

A fixed time out interval is provided to be used for repeated 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 reply is missing.

yes / no

The master synchronizes its link with the substation by transmitting the command "Status Check Instruction" ( SCI ). The secondary station normally responds with an "Executed Response" ( EXR ) or after a substation restart with an "Execute Response, RTU restarted" ( EXRR ). When this response was received by the master station the connection is established.

TDB buffer number where the command "Status Check Instruction/ Communication" ( SCI : function 15, CMD bit = 1 ) is stored.

yes / no

After the communication is established LIAN 98 will transmit first of all a time synchronization command "Time Sync Instruction" ( TSI ) and will repeat it cyclic depending on the parameter "Clock SYNC cycle time", if this parameter is activated.

1 - 1440 minutes

Dependent on this time LIAN 98 as master station will transmit the time synchronization command continually.

TDB buffer number where the command "Time Sync Instruction" ( TSI : function 12, CMD bit = 1 ) is stored.

yes / no

The system time of the PC will be taken over into the time synchronization command ( TSI : function 12, CMD bit = 1 ) before the command will be transmitted, if this parameter is activated. Alternatively the telegram remains unchanged as before edited by the user.

yes / no

After the communication is established LIAN 98 will transmit a general interrogation command "Status Check Instruction" ( SCI ) and will repeat it cyclic depending on the parameter "GI cycle time", if this parameter is activated.

1 - 1440 minutes

Dependent on this time LIAN 98 as master station will transmit the general interrogation command continually.

TDB buffer number where the command "Status Check Instruction/ General Interrogation" ( SCI : function 15, CMD bit = 1 ) is stored.

Unbalanced : ( party line )
All stations to be processed at this line have to be inserted into the scan list. LIAN 98 establishes the connection to this stations and interrogates continuously the user data of this stations.

In order to insert the addresses please proceed as follows :

Activate "Insert scan addresses" ( button "insert" will be displayed ).
Insert in the fields "RTU number" the station to be entered in the scan list.
Take over the station number into the scan list by clicking "insert".
When all stations are inserted, please deactivate "insert scan addresses" ( button "insert" disappears ).

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

Unbalanced : yes / no

When the communication establishment is finished, LIAN 98 starts automatically the request of the user data ( priority 1/ 2 ). If this requests are not wanted it can be deactivated here.

Unbalanced :
TDB buffer number where the command "Request A" ( function 0, CMD bit = 1 ) is stored.

Unbalanced :
TDB buffer number where the command "Request B" ( function 8, CMD bit = 1 ) is stored.

Unbalanced : 0 - 30 000 msec

This parameter determines the time that the program LIAN 98 delays the next request of data priority 2.

yes / no

An "Execute Command" ( EXC : function 13, CMD bit = 1 ) is automatically sent from LIAN 98 during Master simulation after the receipt of an "Check Back Response" ( CBR : function 10, CMD bit = 0 ); when this parameter is activated.

This parameter defines the time in seconds that the program LIAN 98 as master station at most has to wait for an "Check Back Response" ( CBR ) before the message "*E: ACTCON missing !" is displayed.

All telegrams to be sent are provided with the RTU number out of the SIM list during slave simulation. If a number unequal zero is inserted in the telegram ( TDB buffer ), the telegram will be transmitted unchanged with this RTU number already inserted.

yes / no

TDB buffer number where the telegram "Cycle Complete Response, Priority 1" ( CCR1 : Funktion 0, CMD-Bit = 0 ) is stored.

yes / no

TDB buffer number where the telegram "Cycle Complete Response, Priority 2" ( CCR2 : function 1, CMD bit = 0 ) is stored.

yes / no

TDB buffer number where the telegram "Execute Response, RTU restarted" ( EXRR : function 2, CMD bit = 0 ) is stored.

yes / no

TDB buffer number where the telegram "Executed Response" ( EXR : function 3, CMD bit = 0 ) is stored.

yes / no

TDB buffer number where the telegram "Not Executed Response" ( NXR : function 4, CMD bit = 0 ) is stored.

yes / no

Double-throw process command, quittance to select command "Check Back Response" ( CBR : function 10, CMD bit = 0 )

yes / no

 

yes / no

The system time of the PC will be adjusted to the received time values of the time synchronization command "Time Sync Instruction" ( TSI : function 12, CMD bit = 1 ), if this parameter is activated.

0 - 9 999 msec

A correction value can be entered for the setting of the PC system time with a time synchronization command. It will be added onto the received value in the synchronization command.

yes / no

The system time of the PC will be inserted in telegrams with time stamp before transmission, if this parameter is activated. Otherwise the telegram remains unchanged as before edited by the user.

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, telegram number and information elements

No header is displayed : Only information elements

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. For telegrams with fixed length the length is not 5.

The repetition of the length or the start characters ( 68H ) in the message header are faulty, or the stop byte ( 16H ) is missing or set wrongly.

The message checksum in the checksum byte is incorrect.

The receive routine initially searches for 68H or 10H. Each other character is noted as synchronization error and inserted 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.

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

The respond at this time was not expected.

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

The sequence number ( SEQ ) in the command does not correspond to the SEQ expected by LIAN 98. This error message can occur at the beginning after switching on the RTI simulation, when the SEQ of the master and the substation are not still synchronized. Subsequently LIAN 98 takes over the new SEQ of the received command and expects in the next command a SEQ increased by one.