ADTEK ST-LC, Operation Manual, Page: 6 / 36

ST-LC OPERATION MANUAL(EN) 2011-04-27
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■
RS485 Communication
ST-LC can be used as Remote Terminal Unit (RTU)
for monitoring and controlling in a SCADA (Supervisor
Control And Data Acquisition) system. It can read
measured value and controls the relays output (DO) by
RS485 communication ports.
●
Protocol: Modbus RTU Mode
●
Baud Rate
[
baud
]
:
Programmable 1200/2400/4800/ 9600/ 19200/ 38400
●
Data Bits: 8 bits
●
Stop Bits: Programmable 1 bit or 2 bits
●
Parity
[
prity
]
: Programmable Even / Odd / None
Device Number
[
adres
]
: Settable 1~255
ST-VA & ST-F APPLICATION FOR VOLTAGE / CURRENT & FREQUENCY MEASURING
RS 485 Modbus RTU Mode (up to 38400bps)
1 Relay Output:
Mode:
High or Low Energized / Energized Hold / DO
Functions: Start delay / Energized & De-energized
delay / Hysteresis
Analog Output 0~10V/0(4)~20mA
Display:
Mode:
Measuring Value / Maximum Hold / Minimum
Hold / Reading value from RS485 command
Shunt
Motor Distributor
E
◄ ◄ ◄
ENT
MULTI-FUNCTION CONVERTER
M.H. D.H. COM RL
E
◄ ◄ ◄
ENT
MULTI-FUNCTION CONVERTER
M.H. D.H. COM RL
E ◄ ◄ ◄ ENT
MULTI-FUNCTION CONVERTER
M.H. D.H. COM RL
■
Field Calibration
„
In pass time, the engineers have to take a lot of time to adjust and calibrate meters or converters which the purpose
of co-coordinating with zero and span of machinery structure for the Load Cell or Potentiometer measuring. Now, our
ST-LC with innovation functions against above to make the engineer operated easily and smoothly that it's called
“Field Calibration”.
●
The low calibration of machinery structure is not need the exactly "zero" to calibrate, because of the "field calibration"
function could be calibrate any lower point.
●
After the calibration completes, may set low scale and high scale that are relative to the calibration low point and high
point directly.
●
Field calibration wouldn’t change the default calibration. After user completing the field calibration, it can also select
default calibration if the user wants.
Please according to the sequence to do the Field Cal.
( Ö Ö Ö Ö )
H
1
CAL.Lo
CAL. LS
2
4
C AL.Hi
CAL.HS
5
3
Set up plate
to cal. Low
Put the standard
to Cal. High
E
? ? ?
EN
M U L T I-F U N C TIO N
M D CO RL
1 2 3 4 5