triOS Dissolved Oxygen, Руководство по эксплуатации

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8
D01-903en201912 Manual Dissolved Oxygen
Calibr
ation
Calibr
ation
M
alfunc
tion &
M
ain
tenanc
e
M
alfunc
tion &
M
ain
tenanc
e
In
tr
oduc
tion
In
tr
oduc
tion
G
ener
al
Inf
or
ma
tion
G
ener
al
Inf
or
ma
tion
FA
Q
FA
Q
Technical
Da
ta
Technical
Da
ta
W
ar
ran
ty
W
ar
ran
ty
Cust
omer
Ser
vic
e
Cust
omer
Ser
vic
e
Con
tac
t
Con
tac
t
Key
w
or
d I
nde
x
Key
w
or
d I
nde
x
Ac
cessor
ies
Ac
cessor
ies
Us
e
Commissioning
Commissioning
// Dissolved Oxygen
3 Commissioning
This chapter deals with the commissioning of the sensor. Please pay particular attention to this section and follow the safety
precautions to protect the sensor from damage and yourself from injury.
Before the sensor is put into operation, it is important to ensure that it is securely attached and all of the connections are
connected correctly.
3.1 Electrical Installation
3.1.1 Fixed Cable with M12 Industrial Plug
Ensure correct polarity of the operating voltage or otherwise the sensor may be damaged.
1. RS-485 A
2. RS-485 B
6. Power 12 VDC
7. Ground (Power + Ser. Interface)
NOTICE
The sensor is ready for initial startup once it is connected to your terminal, settled in its accessory of assembly and the param-
eterization has been carried out on the display unit.
The sensor must be operated with 12 VDC.
NOTICE
3.2 Interfaces
3.2.1 Serial Interface
The sensors serial interface is RS-485.
For the RS-485, voltages of –5 V to +5 V with respect to the ground are possible. RS-485 uses a differential signal where the
sign-negative potential of the A line is put on the B line. The A-B difference is decisive where the transmission is most resistant
to interactive interference signals.
The used protocol is Modbus RTU. A detailed description of the Modbus protocol commands can be found in the Annex.