3 ELECTRICAL CONNECTIONS
Manual ERZ2000-DI · EN1.2 · 2017, December 21st
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current loops or the adjustment and/or standardization of signals. Intrinsically safe
field devices can be operated within explosion-prone areas with the isolation.
For further information, refer to
appendix D) Optional Ex input card
.
3.1.3
Data interfaces
The
digital data interfaces
are also provided on the basic assembly. These inter-
faces can be used as:
x
Service interface
x
Modbus for external data transmission
x
Ethernet TCP/IP network connections
x
Connection for an external modem (DSfG-B)
x
Serial data interfaces
Interface characteristics
Recommendation / possible use
X 11
COM 1
Interface
Modbus RTU / ASCII
X 12
COM 2
Interface
X 15
COM 5
Interface
External modem, PTB time call-up
X 37
COM 6
Interface
Modbus master for reading the gas
composition and volume (F-instance)
X 38
COM 7
Interface
X 18
Ethernet 1 Network connection Multi-session capability: Modbus IP,
http Single-Session (selectable inter-
face): Remote operation, DSfG-B-IP,
SNTP, TIME
X 19
Ethernet 2 Network connection