FS20 Marine Fire Detection Control Panel
Siemens Industry, Inc. A6V10519176_enUS_b
Building Technologies Division
16.3 Views
PCB view of RS-485 class A module (iso.) FCA2016-U1
X1 Plug-type connection to the operating unit (rear panel)
X2 Screw terminal for RS-485 interface
16.4 Pin Assignments
16.4.1 Plug X2
4 X2–4 RS-485
Circuit A feed
3 X2–3 RS-485
Circuit B feed
2 X2–2 RS-485
Circuit A return
1 X2–1 RS-485
Circuit B return
Wire size: 12…26 AWG