Honeywell NS2 Configuration Guide - Page 16
M-56K Dial-up Modem, RS-485 Connection
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NS2 Configuration Guide M-56K Dial-up Modem, RS-485 Connection Thirty-one NS2 panels for each drop line. Honeywell Access Systems NStar Server Refer to 485-PCI/ NS2 Panel Connection Detail diagram. N-485-HUB-2 COM Port Female 9 Pin (RX) 2 (TX) 3 (Comm) 5 Straight Thru Cable M-56K FAX/MODEM Local DIP Switch Settings (1, 3, 5, 8 ON) (2, 4, 6, 7 OFF) Male 25 Pin 3 (RX) 2 (TX) 7 (Comm) RS-232 (50 Ft.) RS-485 (4,000 Ft.) M-56K FAX/MODEM Remote DIP Switch Settings (1, 3, 8 ON) (2, 4, 5, 6, 7 OFF) Analog Phone Line Dedicated analog phone line recommended DIP Switch Settings S1: ON S2: ON S3: ON S4: ON S5: ON S6: OFF (Ack/Nak on) S7: ON S8: OFF (19,200 Baud Rate) DIP Switch Settings S1-S5: Panel Address S6: ON (RS-485 Enable) S7: N/A (Baud Rate) S8-S9: OFF (Bias) S10: ON (485 EOL) DIP Switch Settings S1-S5: Panel Address S6: ON (RS-485 Enable) S7: N/A (Baud Rate) S8-S9: OFF (Bias) S10: OFF (485 EOL) EG DB 9 / DB 25 Connectors Female Male NS2 Panel NS2 Panel EG See RS-485 Cable note. Only Earth Ground (EG) EG one side of cable. EG It is recommended to earth ground (EG) each NS2 Enclosure individually. RS-485 Cable RS-485 NS2 Panel NS2 Panel Red/White TB9-1 (RS485+) TB9-1 (RS485+) Black/Green TB9-2 (RS485-) TB9-2 (RS485-) RS-485 COM TB9-3 (RS485 COM) TB9-3 (RS485 COM) 4,000 ft. (1,200 m) max, 24 AWG, 2 twisted pairs with shield, 120 ohm, 23 pf (NCI part no. NCP2441-TN) 16 7-101004-01