9
3.5.2
Module parts
Switch module
Analog input and output module
Ethernet module
An example of wiring for the communication is shown in the figure below:
Correct wiring method: Communication Cable shield is connected to earth.
Upper
computer
485B
485A
48
5B
48
5A
1#
48
5B
48
5A
2#
48
5B
48
5A
32#
R
. . .
The shielding layer of two core
shielding wires connects the earth
It is recommended to add a matching resistor between A and B at the end of the meter. The resistance range is 120Ω~10 kΩ.
Note: 1.When the meter has Profibus function, for the related communication configuration and GSD file, please refer to the CD
delivered with the meter.
4. Operation instructions
4.1 Expansion Module Indicator Description
Flashing
(1s)
Flashing
(0.2s)
Bright
Extinguished
Module OK
Module error
/
Module is not running
70 77 71 72 78 73 30 31 32 33 34
36
35
DI
1
DI
2
DI
3
39
37
DI
5
DI
6
DI
7
DI
8
继 电 器 输 出
开 关 量 输 入
DI
4
Relay Output
Digital Input
R1
R2
60 61 62 63 64 65 66 67
69
50
52
AI1 AI
2
51
AI
3
AI
4
AI
5
AI
6
AI
7
AI
8
COM
2
59
53
AO
1
AO
2
AO
3
AO
4
模 拟 量 输 入
模 拟 量 输 出
Analog Output
Analog Input
26
25
RS485
B2
A2
24
LAN
PROFIBUS DP
