34
MODBUS-GW Installation and Operation Manual —
P/N LS10015-000NF-E:C2 4/30/2019
Register Mapping
Zones/Panel Circuits Status Holding Registers
5.4 Zones/Panel Circuits Status Holding Registers
Each of the zones/panel circuits status holding registers are divided into an upper and lower byte as described below and in
•
Upper Byte
: The upper byte contains general status information about the zone or panel circuit.
•
Lower Byte:
The lower byte is primarily used when bit 11 in the upper byte is a ‘1’ (or active). When bit 11 is a ‘1’, refer to
Appendix C, “MODBUS-GW Active Event Types”
for detailed information about the active zone or panel circuit. The lower
byte will be all 0’s if the zone/panel circuit is not in an active state.
Specifically, the lower byte contains the actual active event for this zone or panel circuit. An active state is defined in this
gateway as any Fire, Security, Critical Process, Medical, Mass Notification, or Supervisory alarm state. If the zone or panel
circuit is not present in the panel programming, all bits in the lower byte will contain a ‘1’
or the value ‘FFH’.
The holding register addresses and the zones contained in these addresses are detailed in
Table 5.5 Zones/Panel Circuits 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 Prealarm
Trouble
InActive
Active Enable
Disable
Ack Fire Alarm
Active Event Type
(When Bit 11 is set to 1,
When individual upper byte bits are set to 1, the following definitions apply:
•
Ack Block
(Bit 15): All events on this zone/panel circuit, other than fire alarm, are
acknowledged.
•
Prealarm
(Bit 14): The zone/panel circuit is in a prealarm state.
•
Trouble
(Bit 13): The zone/panel circuit is in a trouble state.
•
InActive
(Bit 12): The zone/panel circuit is not active.
•
Active
(Bit 11): The zone/panel circuit is active and there will be an active event type
in the lower byte.
•
Enable
(Bit 10): The zone/panel circuit is enabled.
•
Disable
(Bit 9): The zone/panel circuit is disabled.
•
Ack Fire Alarm
(Bit 8): The fire alarm on this zone/panel circuit is acknowledged.
Table 5.6 Zones
Zone Type
Register Address
Zone Address
General Zones
46001–47000
Z 1,2,3,4,5,6,7,8,...1000
Logic Zones
47001–49000
Z 1,2,3,4,5,6,7,8,...2000
Trouble Zones
49001–49100
Z 1,2,3,4,5,6,7,8,...100
Releasing Zones
49101–49110
Z 1,2,3,4,5,6,7,8,9,10