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

Each character consists of one start bit ( binary = 0 ), 7 data bits, normally one even parity bit and one stop bit ( binary = 1 )

Any COM port can be allocated to each channel ( COM 1 up to COM 24 ).

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. Each modem, that is assigned to the selected channel is indicated. 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 these modem settings and see if they concur with 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 - 115 200 baud ( variable, default 300 baud )
The start baud rate for the first connection is always 300 baud.

7 Bit ( fixed ) for protocol mode A, B, C and D.

1 bit ( variable )

even ( variable )

1 - 9999 msec ( variable ) : For 300 baud at least 600 msec.

Mode A, Mode B, Mode C, Mode D and Mode E can be selected.

yes/ no

As counter address or counter identification the OBIS code according to the standard
"IEC 62056-61" is used.

The request message to be sent are provided with the device address of the SIM list during master simulation.

1 - 30 000 msec

The IEC 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.
Note : The response timeout should be set at least 5 seconds for a baud rate of 9600 and a message size of ca. 7 kByte.

0 - 255

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

1 - 30 000 msec ( for 300 baud minimum 300 msec )

The master confirms the receipt of the identification with an "ACK/ Option select" and changes subsequent the baud rate. In order to ensure that the acknowledge has been transferred completely the change of the baud rate is delayed with this parameter. It determines the time in milliseconds that LIAN 98 as master waits after the receipt of the identification message before the new baud rate is adjusted.

yes/ no

TDB buffer number where the request message is stored.

yes/ no

TDB buffer number where the acknowledgement/ option select message is stored.

yes/ no

TDB buffer number where the command message "password" is stored.

yes/ no

TDB buffer number where the break message is stored.

yes/ no

TDB buffer number where the acknowledgement message "ACK" is stored.

yes/ no

TDB buffer number where the acknowledgement message "NACK" is stored.

The device address is only used in order to validate the request message during connection establishment. If the address in the SIM list does not correspond to the received address the RTU simulation will not be started.

The identification message to be sent are provided with the identification of the SIM list during RTU simulation.

1 - 30 000 msec

The IEC 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 acknowledge is missing.

yes/ no

TDB buffer number where the identification message is stored.

yes/ no

TDB buffer number where the command message "password" is stored.

yes/ no

TDB buffer number where the break message is stored.

yes/ no

TDB buffer number where the acknowledgement message "ACK" is stored.

yes/ no

TDB buffer number where the acknowledgement message "NACK" is stored.

yes/ no

TDB buffer number where the readout message(s) is (are) stored.

yes/ no

TDB buffer number where the data messages ( EOT/ ETX ) are stored.

1 - 30 000 msec ( minimum 300 msec )

The baud rate is changed with the receipt of the "ACK/ Option select" ( mode C ) and corresponding to the option select the read out data are transmitted or the password requested when changing in the programming mode. In order to ensure that the master has also changed the baud rate the transmission is delayed with this parameter. It specifies the time in milliseconds that LIAN 98 as counter device waits after the receipt of an "ACK/ Option select" before the next data ( readout data or password request ) will be transmitted.

1 - 255 sec ( as per standard 60...120 sec )

This parameter defines the time in seconds that LIAN 98 as counter device waits during inactivity before the initial baud rate ( normaly 300 baud ) is set.

Request message ( Sign on )
Used from the master as sign on at the tariff device.

Acknowledgement/ option select message
A tariff device in protocol mode C or E waits after the transmission of the identification for the option selection.

Identification message
Answer of the tariff device caused by the sign on of the master.

Data message ( Readout )
This message is normally used for the transmission of tariff data by the tariff device. Transmission starts immediately after the transmission of the identification.

Data message ( programming mode )
The message follows read command and ends by ETX/ BCC.

Data message ( programming mode ) using optional partial blocks.
The message follows read command and ends by EOT/ BCC.

N A C K : Acknowledgement message negative ( Repeat request )

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 you can define telegram-specific filters for monitoring in which several OR-linked triggers can be defined for one 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 filter 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 filter mask

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

Everything 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 stop byte ( ETX, EOT ) is missing or set wrongly.

Characters within a telegram that are expected on a fixed position are not on the right place.

The checksum in the checksum byte ( BCC ) is incorrect.

The receive routine initially searches for "/", SOH, STX, ACK oder NACK.
Each other character is noted as synchronization error in the PRO file.

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

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

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

The baud rate character ( field Z ) in the message is wrong.