105BCommunication processor
12.3 Point-to-Point (PtP) communication
S7-1200 Programmable controller
System Manual, 11/2011, A5E02486680-05
543
The following diagram shows the relationship of DONE, ERROR and STATUS parameters
when there is an error.
The DONE, ERROR and STATUS values are only valid until SEND_PTP executes again
with the same instance DB.
Table 12- 21 Condition codes
STATUS (W#16#....)
Description
80D0
New request while transmitter active
80D1
Transmit aborted because of no CTS within wait time
80D2
Transmit aborted because of no DSR from the DCE device
80D3
Transmit aborted because of queue overflow (transmit more than 1024 bytes)
80D5
Reverse bias signal (wire break condition)
833A
The DB for the BUFFER parameter does not exist.
Interaction of the LENGTH and BUFFER parameters for SEND_PTP
The minimum size of data that can be transmitted by the SEND_PTP instruction is one byte.
The BUFFER parameter determines the size of the data to be transmitted. You cannot use
the data type Bool or arrays of Bool for the BUFFER parameter.