Communications services
3.1 Overview of communication options
Communication
20 Function Manual, 11/2019, A5E03735815-AH
Open communication via ISO (only CPs
with PROFINET/Industrial Ethernet
interface)
Data exchange via PROFINET/Industrial Ethernet
with the ISO protocol
Instructions:
• TSEND_C/TRCV_C
• TSEND/TRCV
• TCON
• T_DISCON
X - -
Open communication with FDL (only
CM 1542-5 as of firmware V2.0)
Data exchange via PROFIBUS with the FDL proto-
col
Instructions:
• TSEND_C/TRCV_C
• TSEND/TRCV
• TUSEND/TURCV
• TCON
• T_DISCON
- X -
3
Data exchange with OPC UA clients
Communication via Modbus TCP Data exchange via PROFINET with Modbus TCP
protocol
Instructions:
• MB_CLIENT
• MB_SERVER
X - -
E-mail Sending process alarms via e-mail
Instruction:
• TMAIL_C
X - -
FTP (only CPs with
PROFINET/Industrial Ethernet interface)
File management and file access via FTP (File
Transfer Protocol); CP can be FTP client and FTP
server
Instruction:
• FTP_CMD
X - -
Fetch/Write (only CPs with
PROFINET/Industrial Ethernet interface)
Server services via TCP/IP, ISO-on-TCP and ISO
Via special instructions for Fetch/Write
X - -
S7 communication Data exchange via PROFINET/PROFIBUS with the
S7 protocol.
Instructions:
• PUT/GET
• BSEND/BRCV
• USEND/URCV
X X -
Serial point-to-point connection Data exchange via point-to-point with Freeport,
3964(R), USS or Modbus protocol
Via special instructions for PtP, USS or Mod-
- - X
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