Engineering Reference Subsystem Integration CS1140 AlgoRex Fire AlgoRex CS11 System Limits and Compatibility AlgoRex CS11 System Limits and Compatibility System Limits 1 NK823x per BACnet network Up to 4 downstream connections per NK823x, on the 5 possible communication lines: the 4 COM ports and the I2 C line for DF8000. A configuration including all five connections is not supported. Max. 50 subsystems (CC11, CI11, CK11, STT11, STT20, SI400 Sintony, DF8000) per NK823x Max. 16 C-Bus stations (CT11, CC11, CI11, CK11) per AlgoRex fire system Max. 2 CK11 gateways per AlgoRex fire system (8 CC11/CI11 panels per CK11) Max. 25,000 objects (~10,000 physical points) per NK823x Compatibility Information Panel versions (FW / tool version): EP5, EP5.1 EP7F-SR2 (FW 7.39 / AlgoWorks V1.37) EP7F-SR2-Z1 (FW 7.76 / AlgoWorks V1.46) EP7F-SR2-Z2.1 (FW 7.38 / AlgoWorks V1.50) EP7F-SR2-Z2.2 (FW 7.92 & 8.03 / AlgoWorks V1.63) EP7F-SR2-Z3 (FW 8.31 / AlgoWorks 1.92A) EP7F-SR2-Z4 (FW 8.31 / AlgoWorks V1.92A) EP7F-SR3 (FW 8.3x / AlgoWorks V1.94).