TS21I_ELE_O2 User Manual
Page
8
of
14
Note
: If user sets wrong slave address, then unit may not be able to communicate with gas
detection panel.
Modbus Communication:-
S.NO
function code address
function
1
2
101
Read DO2 status High Alarm
2
102
Read DO1 status Low Alarm
*2
1
1
Read DI
3
3
1001/1
Read % Vol
4
3
1002
Read Threshold Low %
3
1006
Read Threshold High %
5
1
101
Write D02 High Alarm
1
102
write D01 Low Alarm
6
3
1002
Write Threshold Low %
3
1006
Write Threshold High %
Connecting wires
•
Take out the wires from supply, relay output and RS 485 port.
•
Make the connections for relay and RS 485 as mentioned in above table.
•
Take out wires from output and connect it to desired instrument.
•
Insert power adapter to the mains socket.
Default Settings for TS21I_ELE_O2
Baud Rate
9600 bps
Parity
Even Parity
Relay 1
NO, O/P: PULSE type
Relay 2
NO, O/P: PULSE type
Relay 3
NO, O/P: PULSE type
Output Voltage
0-10Volts
Understanding controls on front panel
LED Indicators
1.
ON
Power
ON
LED. Green LED turns on when power is ON. It
indicates Power On status of the unit.
2.
L
–
Alarm
When gas concentration exceeds low threshold level,
TS21I_ELE_O2 generates low alarm condition. For low alarm
condition, yellow LED turns ON till unit is reset. If relay1
output is pulse type, relay remains on for 5sec. If relay1
output is latch type, relay remains on till the unit is reset.
3.
H- Alarm
When gas concentration exceeds high threshold level,
TS21I_ELE_O2 generates high alarm condition. For high alarm
condition, red LED turns ON till unit is reset. If relay2 output is
pulse type, relay remains on for 5sec. If relay2 output is latch
type, relay remains on till the unit is reset.
3.
F- Alarm
When supply goes below 19V or above 29V and also sensor
status open or short. Orange LED turns ON till unit is reset. If
