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 )

1 ( fixed )

The link address field consists of one octet in the link layer.

1 ( fixed )

The ASDU address field ( station address ) consists of one octet in the "Identification of the data unit".

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

Exception for unbalanced mode :

. If the link address 255 ( one octet address ) of a "BROADCAST command" is already inserted in a telegram it will be transmitted unchanged with this inserted address.

. If a link address ( unequal NULL ) is already inserted in the telegram it will be transmitted unchanged with this inserted address.

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

Exception for unbalanced mode :

. If the ASDU address 255 ( one octet address ) of a "BROADCAST command" is already inserted in a telegram it will be transmitted unchanged with this inserted address.

. If a ASDU address ( unequal NULL ) is already inserted in the telegram it will be transmitted unchanged with this inserted address.

1 - 30 000 msec

The IEC 60870-5 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 primary 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 acknowledge is missing.

yes / no

The primary station synchronizes its link with the secondary station by transmitting "Request link status" and "Reset of remote link". The secondary station responds with "Status of link" and "ACK". When "ACK" was received from the primary station the link connection is established.

TDB buffer number where the message "Request link status" ( PRM = 1, function 9 ) is stored.

TDB buffer number where the message "Request link status" ( PRM = 1, function 0 ) is stored.

yes / no

The controlling station synchronizes the frame count bit ( FCB = 0 ) with the controlled station by transmitting "Reset frame count bit". The controlled station responds with "ACK". After the receipt of "ACK" from the primary station the next primary telegram is transmitted with FCV = 1 and FCB = 1.

TDB buffer number where the message "Reset frame count bit  ( PRM = 1, FCT 7 ) is stored.

yes / no

After the initialization of the communication LIAN 98 will transmit first of all a time synchronization command and will repeat it cyclic dependent on the "SYNC cycle time", if this parameter is activated.

yes / no

The system time of the PC will be taken over into the time synchronization command ( ID 6, COT 8 ) before the telegram will be transmitted if this parameter is activated. Alternatively the telegram remains unchanged as before edited by the user.

1 - 1440 minutes

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

TDB buffer number where the time synchronization command ( ID 6, COT 8 ) is stored.

yes / no

After the initialization of the communication LIAN 98 will transmit a general interrogation command and will repeat it cyclic if this parameter is activated.

1 - 1440 minutes

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

TDB buffer number where the general interrogation command ( ID 7, COT 9 ) is stored.

Unbalanced: 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 "Link address" / "Address of ASDU" the station to be entered in the scan list.
Take over the addresses 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 ( class 1/ 2 ). If this scans are not wanted it can be deactivated here.

Unbalanced :
Number of the TDB buffer where the short telegram "request data class 1 ( PRM = 1, function 10 ) is stored.

Unbalanced :
Number of the TDB buffer where the short telegram "request data class 2 ( PRM = 1, function 10 ) is stored.

Unbalanced : 0 - 30 000 msec

This parameter determines the time in milliseconds that the LIAN 98 delays the next request ( data class 1 or 2 ).

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

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

Balanced : 1 - 30 000 msec

The IEC 870-5-101 standard specifies a fixed time out interval to be used for repeated frame transmissions. The time out interval and the maximum number of retries are configurable and appropriate values are depend on the transmission system.

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

Balanced : 0 - 255

Via this parameter it is defined how many times the last transmission is to be repeated when the acknowledge is missing. ( only balanced )

Balanced : yes / no

The primary station synchronizes its link with the secondary station by transmitting "Request link status" and "Reset of remote link". The secondary station responds with "Status of link" and "ACK" respectively, and when the "ACK" is received in the primary station the link connection is established.

With the message "End of initialization" transmitted from the controlled station the initialization procedure is ended. 

Balanced :
TDB buffers number where the short telegram "request link status" ( PRM = 1, function = 9 ) is stored. 

Balanced :
TDB buffers number where the short telegram "reset of remote link" ( PRM = 1, function = 0 ) is stored. 

yes / no

TDB buffers number where the telegram ( ID 05, COT 5/ 6  ) is stored.

TDB buffers number where the respond message ( ID 05, COT 4 )is stored.

TDB buffers number where the respond message ( ID 05, COT 3 ) is stored.

yes / no

The current system time of the PC is given back in the activation confirmation of the time synchronization command, if this parameter is activated. Otherwise the received time will be only mirrored.

yes / no

The system time of the PC will be adjusted to the received time values of the time synchronization command ( ID 6, COT 8 ), 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.

Unbalanced : yes / no

Data acquisition is done via cyclic transmission of the short message  "Request data class 2" ( function 11 ) in interrogation systems. Substations that have no data of this class response normally with the short message "data not available" ( FKT=9 ). It can also be answered with the single sign "E5H" if the ACD bit = 0.

Unbalanced : yes / no

 

The primary station synchronizes its link with the secondary station by transmitting "Request status of link" ( FKT = 9 ) and "Reset of remote link" ( FKT = 0 ). The secondary station responds with "Status of link" ( FKT = 11 ) and "ACK" ( FKT = 0 ) and when the "ACK" is received of the primary station the connection is established.

The reset remote link of the communication unit is done automatically by LIAN 98 if Master (RTI) or slave RTU) simulation is started.

The RTI simulation starts with a clock SYNC command ( ID 7, COT 9 ) after the reset remote link and when the time synchronizatin is enabled.

In case of RTU simulation LIAN 98 transmits the message "Identification" ( ID 5, COT 5/ 6 ) if it is parameterized in the SIM list.

Data acquisition is used in unbalanced data transmission procedures to update the controlling station with actual states of process variables in the controlled stations. The controlling station performs polling by interrogating ( function code 10 and 11 ) the controlled stations sequentially. Controlled stations may only transmit when they are polled.

Polling is done automatically by LIAN 98 when ( RT ) simulation is started and the link transmission procedure in the configuration is set to "U = unbalanced" and is not deactivated via the SIM list.

There are two classes of data specified, class 1 data contains spontaneous data and class 2 data contains cyclic data. Also defined is the link service "Request user data class 2" ( FCT 11 ) used for polling controlled stations. Two consequences are possible in each controlled station when the polling telegram is received:

No spontaneous data are available :
In this case the link layer of the controlled station responds by a fixed frame message "Requested data not available" ( FCT 9 ) and the controlling station continues its polling procedure by polling the next controlled station.

Spontaneous data are available :
In this case the controlled station also responds by the fixed frame message "Requested data not available" ( FCT 9 ) but this time with the "ACD bit" set, indicating that spontaneous data are available and waiting for transfer. The controlling station then sends a "Request user data class 1" ( FCT 10 ) message, and the controlled station responds by transmitting an event ASDU.

A spontaneous data transmission can be done in the RTU simulation in LIAN 98 via sending single send jobs ( see "transmit" ) or a send sequence ( see "send sequence list" ).

The general interrogation application function is used to update the controlling station after the station initialization procedure or when the controlling station detects a loss of information.

The general interrogation procedure of the controlling station requests the controlled station to transmit the actual values of all its process variables. The interrogation procedure is finished when the controlling station receives an "End of interrogation message".

The information transfer is triggered by an interrogation command ( ID 100, COT 6 ) message from the controlling station to the controlled station, which responds with an interrogation confirmation ( ID 100, COT 7 ) message. The controlled station transmits the interrogated information by means of one or more monitored information ASDUs. The last information ASDU is then followed by an "interrogation termination" message ( ID 100, COT 10 ), indicating that all information has been transferred.

The confirmation ( ACTCON ) and the termination of the general interrogation ( ACTTERM ) is done automatically in LIAN 98 if this is activated in the simulation list. Transmission of requested user data can be done via an entry in the action filter ( see "Action filters" )..

Date and time of controlled stations are initially synchronized by the controlling station after initialization and afterwards re-synchronized periodically.

A clock synchronization command ( ID 6, COT 8 ), containing the full current clock time is sent from the controlling station. After the execution of the clock synchronization the controlled station generates a confirmation message ( ID 6, COT 8 ) which contains the local time before synchronization.

The controlling station transmits a command ( ID 20 ) to the controlled station which responds by a COMMAND confirmation message ( positive if the specified control action is about to begin, otherwise negative ). The addressed equipment should now change its state and the new state is indicated to the controlling station by a spontaneous data message when reached.

Filter released

yes / no

With this option already set monitoring filters 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 already set action filters 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 already set start triggers 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 already set stop triggers 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 :
link layer + data unit identifier + information objects/ elements

No link layer is displayed :
data unit identifier + information objects/ elements

Only information objects/ elements are displayed.

Only link layer is displayed.

No information objects/ elements are displayed :
link layer + data unit identifier

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, 10H, E5H ( or A2H ). 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 INFormation number set in the ASDU is not provided.
( see Protocol specific parameter - PAR file )

The TypeID set in the ASDU is not provided.
( see Protocol specific parameter - PAR file )

The COT set in the ASDU is not provided or is not expected as response.
( see Protocol specific parameter - PAR file )

The FUNction type set in the ASDU is not provided.
( see Protocol specific parameter - PAR file )

The length of the information object is not plausible.

The values stored in the field "variable structure qualifier" are senseless.

Balanced : Direction bit is set wrong.

Primary message bit is set wrong.

Frame count bit has a wrong value..

Frame count bit valid is not correct set.

The respond at this time was not expected.

No station initialization is done, but in the message the FCV bit is already set to valid.

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

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

An expected "Activation Confirm" ( COT 7 ) respond was not received within the parameterized "Response timeout".

An expected "Activation Termination" ( COT 10 ) respond was not received within the parameterized response timeout.