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3.11 Communication
The Data logger can communicate (for programming and for data retrieval)
via three serial interfaces:
•
Service interface: RS232
•
Com1 (Data interface): RS232, RS485, 20mA/CS, M-Bus or fiber-optic
•
Com2 (Modem): PSTN, ISDN, LAN/Ethernet-Connection
optional: second data interface
Programming is only by service interface possible.
An exact description of all interfaces is contained in section “8 Interfaces”
and section “9 Modem/Com2 (Optional)”
The DLX currently supports three different protocols::
•
SCTM
•
IEC 60870-5-102
•
Modbus RTU (alternative to SCTM / IEC 60870-5-102)
For more information see appendix A
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