3 Electrical connections
Manual ERZ 2000-NG · EN07 · 2019, May 13th
109
3.1.5
Pin assignment and recommened use of the interfaces
COM 1
Pin assignment
Pin
Mode: RS 232
Mode: RS 422
Mode: RS 485
1
+U (+5V DC)
+U (+5V DC)
+U (+5V DC)
2
RxD
TxD-A
3
TxD
R/TA A Data
4
RxD-A
5
GND
GND
SGND Signal Ground
6
TxD-B
7
8
RxD-B
R/TN B Data
9
Use
Switchable from
RS 232
to
RS 422
or
RS 485
, can be optionally assigned with
dif-
ferent protocols
,
MODBUS protocol
and
IGM
(for ultrasonic meters) available.
Optionally,
MODBUS ASCII / RTU
can be offered as
Modbus standard
driver for
RS 232 or RS 485 interfaces.
The operating mode for the COM 1 interface is adjusted in the menu
IB Serial inter-
faces
with coordinate
IB03 COM 1 operating mode
.
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...