CLSS Gateway - Installation and Users’ Manual | P/N:LS10248-000HW-E | REV. F | FEB/11/2022
62
Register Mapping
Modbus Communications
The only possible active event type for zones is Non-Fire Activation (71H).
Gateway Active Event Code” on page 74.
The holding register addresses and the points contained in these addresses are detailed
in
Table 7.10, “Point Status Holding Register Device/Module Addresses”
. Each range of
holding registers is used for either detectors or modules.
Table 7.9: Point Status Holding Register Bit Definitions
Upper Byte
Lower Byte
Bit
No.
15
14
13
12
11
10
9
8
7 6 5 4 3 2 1 0
Bit
Name
Ack
Block
Prealar
m
Troubl
e
InActive Active
Enabl
e
Disabl
e
Ack
Fire
Alarm
Active Event Code
(When Bit 11 is set
to 1, see
.)
When individual upper byte bits are set to 1, the following definitions
apply:
Ack Block
(Bit 15): All events on this point, other than fire alarm, are
acknowledged. Not applicable for zones.
Prealarm
(Bit 14): The point is in a prealarm state. Not applicable for
zones.
Trouble
(Bit 13): The point is in a trouble state. Not applicable for zones.
InActive
(Bit 12): The point is not active.
Active
(Bit 11): The point is active and there will be an active event type
in the lower byte.
Enable
(Bit 10): The point is enabled.
Disable
(Bit 9): The point is disabled.
Ack Fire Alarm
(Bit 8): The fire alarm on this point is acknowledged. Not
applicable for zones.
Table 7.10: Point Status Holding Register Device/Module Addresses
Start Address End Address
Address
400001
400300
L1D1–L1D300
400301
400600
L1M1–L1M300
400601
400900
L2D1–L2D300
400901
401200
L2M1–L2M300
401201
401500
L3D1–L3D300
401501
401800
L3M1–L3M300
401801
402100
L4D1–L4D300
402101
402400
L4M1–L4M300
402401
402700
L5D1–L5D300
402701
403000
L5M1–L5M300
403001
403300
L6D1–L6D300
403301
403600
L6M1–L6M300
403601
403900
L7D1–L7D300
403901
404200
L7M1–L7M300
404201
404500
L8D1–L8D300
404501
404800
L8M1–L8M300
404801
405100
L9D1–L9D300
405101
405400
L9M1–L9M300