Siemens CM 1542-1 - Programming Blocks for Communication Services

Properties and functions
1.4 Requirements for use
CM 1542-1
18 Operating Instructions, 07/2019, C79000-G8976-C355-04
1.4.2 Programming
Program blocks
For communications services, there are preprogrammed program blocks (instructions)
available as the interface in your STEP 7 user program.
Table 1- 1 Instructions for communications services
Protocol
Program block (instruction)
System data type
TCP Establish connection and
send/receive data via:
• TSEND_C / TRCV_C
or
• TCON, TSEND / TRCV
(Termination of the connec-
tion possible using
TDISCON)
• TCON_IP_v4
• TCON_Configured
• TCON_QDN
ISO-on-TCP
• TCON_IP_RFC
UDP
• TCON, TUSEND/TURCV
(Termination of the connec-
tion possible using
TDISCON)
• TCON_IP_v4
• TCON_QDN
E-mail
• TMAIL_C • TMail_V4
• TMAIL_FQDN
Table 1- 2 Instructions for configuration tasks
Function
Program block (instruction)
System data type
Configuration of the Ethernet
interface
• T_CONFIG • CONF_DATA
For more detailed information, refer to section Program blocks for OUC (Page 34).
Refer to the documentation of the program blocks in the online help of STEP 7.