14
(9) Self-check operation
Click the [self-test] button in the normal operation state, and the instrument will monitor its own functional
status. After the self-test is completed, it will automatically jump to the normal operation state. Operation
examples are as follows:
(10) Fault event record query
Click "Down" button for many times in normal operation to reach the interface of "Fault Record", and click
"Ok" to enter. Up to 10 fault records can be recorded, arranged from new to old. Press "Self-check/Return" to exit
when the view is complete.
7 Communication Protocol
7.1 Communication protocol introduction
The device uses Modbus-RTU communication protocol, which defines check codes and data sequences in
detail, all of which are necessary for specific data exchange. The Modbus protocol uses a master-slave responder
connection (half duplex) on a single communication line, which means that signals are transmitted in opposite
directions on a single communication line. First, the signal of the master computer is addressed to a unique
terminal (slave), and then the reply signal from the terminal device is transmitted to the host in the opposite
direction.
Modbus protocol only allows communication between the host computer (PC, PLC, etc.) and terminal
Set Loop Language
Clr SOE Sw Info.
Set Loop Language
Clr SOE Sw Info.
L1: Open L2: Close
L3: Close L4: Close
Save Settings？
Yes No
Press Up,Down and Enter to set
value, press Esc to save or exit
Press Up and Down to
select the option
Press Enter to confirm
Press Up and Down to
select the option
Press Enter to confirm
Self-check is done！
Press Test
All indicators
light up
Indicator lights
return to normal
2015-07-02
12:30:45
L1: 30mA L2:Break
L3: 6mA L4:Close
2015-07-02
12:30:45
L1: 30mA L2:Break
L3: 6mA L4:Close
2015-07-02
12:30:45
Press Down key
L1: 30mA L2:Break
L3: 6mA L4:Close
Fault Record
Press Enter key>>>
Press Enter
2015-07-02
12:30:45
L5: Close L6: Close
L7: Close L8: Close
2015-07-02
12:30:45
2015-07-02
12:30:45
1、Loop:1(31mA）
Alarm value:30mA
2015-07-02
12:30:45
Press Down key
Press Down key
L9: Close L10:Close
L11:Close L12:Close
L1: 30mA L2:Break
L3: 6mA L4:Close
Press Up/Down to view
Press Esc to exit
