3 Electrical connections
Manual ERZ 2000-NG · EN07 · 2019, May 13th
112
COM 3
Pin assignment
Pin
Mode: DSFG
Mode RS 232
1
+U (+5V DC)
Power supply
2
GND
Reference potential (GND)
RxD
3
R/TA
A Data
TxD
4
unassigned
DTR
5
SGND
GND
GND
6
-U
GND
7
GND
GND
RTS
8
R/TN
B Data
CTS
9
unassigned
Use
Switchable from
RS 232
with handshake to
RS 485 DSfG-compliant
. Can be as-
signed with a second
Modbus protocol
or the DSfG control station.
Note
The DSfG interface implemented in the ERZ2000-NG conforms to the current
version of the technical specifications of the DSfG for flow computers.
The DSfG is required in the scope of this documentation (further documenta-
tion is available from the DVGW).
The same parameter settings as with COM 1 can be made for a second Modbus in-
terface:
x
Off
x
Test
x
DSfG control station
x
Modbus RTU
x
Modbus ASCII
Summary of Contents for ERZ2000-NG
Page 10: ......
Page 68: ...2 Introduction Manual ERZ 2000 NG EN07 2019 May 13th 58 Figure 44 Menu LA Overview...
Page 69: ...2 Introduction Manual ERZ 2000 NG EN07 2019 May 13th 59 Figure 45 Menu LB Totalizer BM1...
Page 77: ...2 Introduction Manual ERZ 2000 NG EN07 2019 May 13th 67 Figure 51 Overview System sub menu...
Page 241: ...6 Flow meters Manual ERZ 2000 NG EN07 2019 May 13th 231 Figure 167 Interface module C34...
Page 340: ...8 Overview Coordinates Manual ERZ 2000 NG EN07 2019 May 13th 330 8 5 6 TSV export...
Page 453: ...Certificates Manual ERZ 2000 NG EN07 2019 May 13th 443...