Rcv_Rst (Delete Receive Buffer) Instruction - Siemens S7-1200 System Manual

Communication processor and Modbus TCP
12.3 Point-to-point (PtP) communication
Table 12- 25 Condition codes
STATUS (W#16#...) Description
0000 No buffer present
0094 Message terminated due to received maximum character length
0095 Message terminated because of message timeout
0096 Message terminated because of inter-character timeout
0097 Message terminated because of response timeout
0098 Message terminated because the "N+LEN+M" length condition was satisfied
0099 Message terminated because of end sequence was satisfied
80E0 Message terminated because the receive buffer is full
80E1 Message terminated due to parity error
80E2 Message terminated due to framing error
80E3 Message terminated due to overrun error
80E4 Message terminated because calculated length exceeds buffer size
80E5 Reverse bias signal (wire break condition)
833A The DB for the BUFFER parameter does not exist.
12.3.3.7

RCV_RST (Delete receive buffer) instruction

Table 12- 26 RCV_RST (Receiver Reset) instruction
LAD / FBD
STEP 7 automatically creates the DB when you insert the instruction.
1
Table 12- 27 Data types for parameters
Parameter and type
REQ IN
PORT IN
DONE OUT
698
SCL
"RCV_RST_DB"(
REQ:=_bool_in_,
PORT:=_uint_in_,
DONE=>_bool_out_,
ERROR=>_bool_out_,
STATUS=>_word_out_);
Data type Description
Bool Activates the receiver reset on the rising edge of this enable input (Default
value: False)
PORT After you install and configure a CM or CB communication device, the port
identifier appears in the parameter helper drop-list available at the PORT box
connection. The assigned CM or CB port value is the device configuration
property "hardware identifier". The port symbolic name is assigned in the
"System constants" tab of the PLC tag table. (Default value: 0)
Bool When TRUE for one scan, indicates that the last request was completed
without errors.
Description
RCV_RST clears the receive buffers in the CM or CB.
System Manual, 03/2014, A5E02486680-AG
S7-1200 Programmable controller