What are the different formats to configure “Addr” input of ADDM function block used to convert Address in STRING data type to ADRESS data type.

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Addr STRING for ASCII Address Format

For ASCII addressing, only the communication port number is requested:

‘<communication port number>’

For example, to send a user defined message on serial line 2, use the string ‘2’

Addr STRING for Modbus Serial Address Format

For Modbus serial addressing, use the communication port and the destination slave address (0 to 247), separated by a dot: ‘<communication port number>.<slave address>’

For example, send a message to slave 8 on serial line 2 with this syntax: ‘2.8’

Addr STRING for Modbus TCP Address Format

a) Address of a Modbus TCP Standard Slave

For the Modbus TCP standard slave address format, the communication port number (3 for the embedded Ethernet port) and the destination IP address {A.B.C.D} (offset with brackets) are requested:

‘<communication port number>{<IP address A.B.C.D>}’

For example, to send a message at Modbus TCP slave IP address 192.168.1.2 using standard TCP port 502, use this string:

‘3{192.168.1.2}’

b) Address of a Modbus Serial Slave Through Ethernet/Serial Line Gateway

The request includes the communication port number, gateway IP address {A.B.C.D} (offset with brackets with or without TCP port), and the Modbus serial slave address (UnitId parameter):

‘<communication port number>{<IP address A.B.C.D>}<slave address>’

For example, to send a message at Modbus Serial slave address 5 through a Ethernet/serial line gateway at IP address 192.168.1.2 using standard TCP port 502, use this string:

‘3{192.168.1.2}5’