CLSS Gateway - Installation and Users’ Manual | P/N:LS10248-000HW-E | REV. F | FEB/11/2022 109
ESSER Panels Connecting to the Panels
C.4 ESSER Panels
The gateway should have an RS-485 connection with the panel for sending events. If
Inventory Synchronization is required, use the RS-232 connection.
C.4.1 Connection Options
The gateway operates only with the ESSER fire alarm control panels as listed in the table
below:
Table C.2: ESSER Panel Connection Options
Minimum Required Versions
FlexES panel: 4.07R001
IQ8 panel: 03.13R000
CLSS Gateway: 3.1.4.72
C.4.2 To Use an RS-485 Connection
Using an RS-485 cable the CLSS Gateway and the panel are connected.
The RS-485 ports in the gateway board are labeled as 3 and 4 in the Figure C.2.
1. On the Gateway Side
Connect to an RS-485 port of the gateway board.
2. On the Panel Side
• FlexES Panels
• IQ8 Panels
• FlexES Panels
• Connect the +ve wire to the Terminal 1 of the panel.
• Connect the -ve wire to the Terminal 2 of the panel.
Figure C.4: Wiring Diagram: RS-485 Connections for a FlexES Panel
Fire Alarm Panel Models RS-485 UART/TTL RS-232 USB
FlexES Control
Yes No Yes
1
1 Use a TTY-RS-232 converter (764856)
No
IQ8Control C
Yes
2
and
3
2 Use the RS-485 module (784871)
3 Use the add-on SEI-2 (Serial Essernet® Interface) (784850)
No Yes
1
No
IQ8Control M
Yes
2 and 3
No Yes
1
No
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