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HONEYWELL SECURITY TECHNICAL BULLETIN 11 December 2008
www.asia.security.honeywell.com Rev 1.0 2 of 5
Hardware Configuration
• Connect CPU RS422 Master Port to Slave Port of HVBPIT44.
• Connect Master Port of HVBPIT44 to HNDR-S Com 2 (RS-485).
Pin Number
CPU RS422 Master Port
(DB9 Female)
HVBPIT44 Slave Port
(DB9 Female)
1 Tx- Rx-
2 Tx+ Rx+
3 Rx+ Tx+
4 Rx- Tx-
5 Signal Gnd Signal Gnd
6 +12V source +12V input
7 NC NC
8 NC NC
9 Ground Ground
Pin Number
HVBPIT44 Master Port
(DB9 Female)
HRHD-S Com 2
1 Tx- Tx
2 Tx+ Rx