Siemens SIMATIC S7-1200

Communication processor and Modbus TCP
13.3 Point-to-point (PtP) communication
S7-1200 Programmable controller
System Manual, V4.2, 09/2016, A5E02486680-AK
1131
Parameter and type
Data type
Description
ERROR OUT Bool TRUE for one execution after the last request was completed with an
error
STATUS OUT Word Execution condition code (Default value: 0)
Table 13- 36 Condition codes
STATUS (W#16#....)
Description
81F0
CM or CB is RS485 and no signals can be set
81F1
Signals cannot be set because of Hardware flow control
81F2
Cannot set DSR because module is DTE
81F3
Cannot set DTR because module is DCE
81F4
Error in the block header, for example, wrong block type or wrong block length
8280
Negative acknowledgement while reading the module
8281
Negative acknowledgement while writing the module
8282
DP slave or module not available
13.3.5.11
Get_Features
Table 13- 37 Get_Features (Get advanced features) instruction
LAD / FBD
SCL
Description
"Get_Features_DB"(
REQ:=_bool_in_,
PORT:=_word_in_,
NDR:=_bool_out_,
ERROR=>_bool_out_,
STATUS=>_word_out_,
MODBUS_CRC=>_bool_out_,
DIAG_ALARM=>_bool_out_,
SUPPLY_VOLT=>_bool_out);
Get_Features performs reads the
advanced feature capabilities of a
moduler.
1
STEP 7 automatically creates the DB when you insert the instruction.
Use the Get_Features instruction to read the advanced feature capabilites of a module.