Siemens SIMATIC S7-1200 - Page 850

Communication
11.2 PROFINET
S7-1200 Programmable controller
850 System Manual, V4.2, 09/2016, A5E02486680-AK
Table 11- 15 TSEND_C and TRCV_C instructions
LAD / FBD
SCL
Description
"TSEND_C_DB"(
req:=_bool_in_,
cont:=_bool_in_,
len:=_uint_in_,
done=>_bool_out_,
busy=>_bool_out_,
error=>_bool_out_,
status=>_word_out_,
connect:=_struct_inout_,
data:=_variant_inout_,
com_rst:=_bool_inout_);
TSEND_C establishes a TCP or ISO on TCP
communication connection to a partner station,
sends data, and can terminate the connection.
After the connection is set up and established, it
is automatically maintained and monitored by
the CPU.
"TRCV_C_DB"(
en_r:=_bool_in_,
cont:=_bool_in_,
len:=_uint_in_,
adhoc:=_bool_in_,
done=>_bool_out_,
busy=>_bool_out_,
error=>_bool_out_,
status=>_word_out_,
rcvd_len=>_uint_out_,
connect:=_struct_inout_,
data:=_variant_inout_,
com_rst:=_bool_inout_);
TRCV_C establishes a TCP or ISO on TCP
communication connection to a partner CPU,
receives data, and can terminate the connection.
After the connection is set up and established, it
is automatically maintained and monitored by
the CPU.
1
STEP 7 automatically creates the DB when you insert the instruction.