
1
2
3
4
5
1
2
3
4
5
6
7
8
TB1
TB4
+
-
Btu Mode 1Contact
Btu Mode 2 Contact
}
}
}
24V AC/DC
+
-
}
Analog Output
+
-
}
RS485
+
-
}
Aux Pulse Input
RS485 Common
System-30 Signal Connection Board
1
1451 South Belcher Road, Largo, FL 33773 • T
el (727) 447-6140 • Fax (727) 442-5699 •
[email protected]System-30 BTU Measurement System MODBUS RTU RS485 04/14 - 0583-1 / 18345 A - 4
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