HR MANUAL OPERATION VIA MODBUS
Manual version 4.1 (26-07-2018)
en-57
en
337 Alarm functions
4.1.7 Reading out current operation
The current operation of the unit can be read out in re
gister
address 221.
REGISTER
ADDRESS
DESCRIPTION RO
/RW* UNIT MINIMUM MAXIMUM DEFAULT
337 Alarm functions
(activated by input 1 (i1) or by reg-
ister address 435)
rw - 0 41 0
435 Activate alarm functions (register
address 337)
0 = inactive
1 = active
rw-010
*ro = read only (read only)
*rw = read & write (read and write)
VALUE OPTION DESCRIPTION
30 Smoke extraction When the contact is closed:
• air is extracted (maximum fan speed).
• no air is supplied.
• an alarm signal (smoke) is sent to the building manage-
ment system.
31 Fire mode When the contact is closed:
• the unit is switched off.
• any air dampers are closed.
• an alarm signal (fire) is sent to the building ma
nagement
system.
40 Smoke alarm When the contact is closed:
• an alarm signal (smoke) is sent to the building manage-
ment system.
41 Fire alarm When the contact is closed:
• an alarm signal (fire) is sent to the building management
system.
REGISTER
ADDRESS
DESCRIPTION RO
/RW* UNIT MINIMUM MAXIMUM DEFAULT
221 Current mode operation ro-0151-
*ro = read only (read only)
*rw = read & write (read and write)
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