Diagnostics and maintenance 
  6.4 Processing status of the telecontrol e-mails 
CP 1542SP-1, CP 1542SP-1 IRC, CP 1543SP-1 
Operating Instructions, 01/2017, C79000-G8976-C426-03 
105 
Processing status of the telecontrol e-mails 
The meaning of the status of the "PLC tag for processing status" is as follows: 
Table 6- 2  Meaning of the status ID output in hexadecimal format 
Transfer completed free of errors 
82xx  Other error message from the e-mail server 
Apart from the leading "8", the message corresponds to the three-digit error number of the 
SMTP protocol. 
8401  No channel available. Possible cause: There is already an e-mail connection via the CP. A 
second connection cannot be set up at the same time. 
No TCP/IP connection could be established to the SMTP server. 
The SMTP server has denied the login request. 
8406  An internal SSL error or a problem with the structure of the certificate was detected by the 
Request to use SSL was denied. 
The client could not obtain a socket for creating a TCP/IP connection to the mail server. 
8409  It is not possible to write via the connection. Possible cause: The communications partner 
reset the connection or the connection aborted. 
8410  It is not possible to read via the connection. Possible cause: The communications partner 
terminated the connection or the connection was aborted. 
Sending the e-mail failed. Cause: There was not enough memory space for sending. 
The configured DNS server could not resolve specified domain name. 
Due to an internal error in the DNS subsystem, the domain name could not be resolved. 
An empty character string was specified as the domain name. 
8415  An internal error occurred in the cURL module. Execution was aborted. 
An internal error occurred in the SMTP module. Execution was aborted. 
8417  Requests to SMTP on a channel already being used or invalid channel ID. Execution was 
aborted. 
Sending the e-mail was aborted. Possible cause: Execution time exceeded. 
The channel was interrupted and cannot be used before the connection is terminated. 
Certificate chain from the server could not be verified with the root certificate of the CP. 
Internal error occurred. Execution was stopped. 
Action not executed: Mailbox not available / unreachable. Try again later. 
84xx  Other error message from the e-mail server 
Apart from the leading "8", the message corresponds to the three-digit error number of the 
8500  Syntax error: Command unknown. 
This also includes the error of having a command chain that is too long. The cause may be 
that the e-mail server does not support the LOGIN authentication method. 
Try sending e-mails without authentication (no user name). 
8501  Syntax error. Check the following configuration data: 
Alarm configuration > E-mail data (Content): 
•  Recipient address ("To" or "Cc").