Siemens SIMATIC S7-1200

Easy to communicate between devices
7.5 PROFINET
Easy Book
138 Manual, 03/2014, A5E02486774-AF
TCON_Param
Table 7- 3 Structure of the connection description (TCON_Param)
Byte
Parameter and data type
Description
0 … 1
block_length
UInt
Length: 64 bytes (fixed)
2 … 3 id CONN_OUC
(Word)
Reference to this connection: Range of values: 1 (default) to 4095.
Specify the value of this parameter for the TSEND_C, TRCV_C or
TCON instruction under ID.
4 connection_type USInt Connection type:
• 17: TCP (default)
• 18: ISO-on-TCP
• 19: UDP
5 active_est Bool ID for the type of connection:
• TCP and ISO-on-TCP:
– FALSE: Passive connection
– TRUE: Active connection (default)
• UDP: FALSE
6 local_device_id USInt ID for the local PROFINET or Industrial Ethernet interface:
1 (default)
7 local_tsap_id_len USInt Length of parameter local_tsap_id used, in bytes; possible values:
• TCP: 0 (active, default) or 2 (passive)
• ISO-on-TCP: 2 to 16
• UDP: 2
8
rem_subnet_id_len
USInt
This parameter is not used.
9 rem_staddr_len USInt Length of address of partner end point, in bytes:
• 0: unspecified (parameter rem_staddr is irrelevant)
• 4 (default): Valid IP address in parameter rem_staddr (only for
TCP and ISO-on-TCP)
10 rem_tsap_id_len USInt Length of parameter rem_tsap_id used, in bytes; possible values:
• TCP: 0 (passive) or 2 (active, default)
• ISO-on-TCP: 2 to 16
• UDP: 0
11
next_staddr_len
USInt
This parameter is not used.