Page 11 of 17 Revision 1.1 Aug 2020
Document No. AlarmLine II Digital EN Controller Installation Instructions
Commissioning (Cont.)
9. If “Yes” was selected in step 8, the AlarmLine II Digital EN Controller will
then ask if the zone is ready to be calibrated. Ensure that the connection
between the leader cable and/or the IS barriers and the
start
of the
Digital LHD cable is securely shorted out between the two cores. When
this is done, press the “Set” button to continue.
10. The AlarmLine II Digital EN Controller will display the voltage drop
across the leader cable. If necessary, press “Select” to perform the
calibration measurement again. The AlarmLine II Digital EN Controller will
display the updated voltage drop in mV (milli-volts). The displayed value
should be equal to approximately the loop resistance in ohms from the
AlarmLine II Digital EN Controller, with the short in place, divided by 8.
Once the voltage drop has been confirmed correct, press “Set” to continue.
Now remove the short at the start of the LHD cable
.
11. If the Linear Heat Detection cable is connected directly to the
AlarmLine II Digital EN Controller then select No and press the Set button
to continue.
12. Select whether you would like the alarm outputs for both zones to
be latching. If set to Yes, then
if an alarm is triggered the unit will either
require the power supply to be interrupted (min. 2s) or the Set button
to be pressed to reset to normal once the alarm conditioned has
been cleared.
13. Select whether the Modbus output should be enabled. If this is not
enabled then proceed to step 17.
14. Select required Modbus type, either RTU or ASCII.
15. Set the Modbus address for this device (1-247).
16. Cycle through the possible Baud Rates for the Modbus RTU/ASCII
output. (2400, 4800, 9600, 19200, 38400, 57600, 115200).
17. Select the number of data bits for the Modbus RTU/ASCII output.
(7 or 8)
18. Select the number of stop bits for the Modbus RTU/ASCII output.
(1 or 2).
19. Select the parity for the Modbus RTU/ASCII output.
(even/odd/none).
Modbus TYPE
RTU
Modbus address
1
Latching outputs
No
Modbus output on
yes
Ready to
calibrate?
Zone 2 cal:
109 mV
ZONE 2 ldr cable
no
BAUD RATE
2400
DATA BITs
7
Stop BITs
1
PariTY
Even
