Siemens SIMATIC S7 - Page 229

Program instructions
7.3 Communication
S7-200 SMART
System Manual, V2.3, 07/2017, A5E03822230-AF
229
Error code
Description
T
C
O
N
T
S
E
N
D
T
R
E
C
V
T
D
C
O
N
19 One of the following IP address errors have occurred:
• The IP address is invalid (for example, address
0.0.0.0).
• This IP address is the IP address of this CPU.
• This CPU has IP address 0.0.0.0.
• The IP address is a broadcast or multicast address.
X
20 A local or remote TSAP error (ISO-on-TCP only) X
21
An invalid connection ID (65535 is reserved)
X
22
An active/passive error (UDP only allows passive)
X
23
The connection type is not one of the allowed types.
X
24 There is no operation pending so there is no status to
report.
X X
25 The receive buffer is too small: The CPU received more
bytes than the buffer length supports. The CPU discards
the extra bytes.
X
31
Unknown error
X
X
X
X