Communications Wiring; Cabinet Tamper And Power Failure Input Wiring; Memory And Real Time Clock Backup Battery; Figure 3: Pro3200 Port Wiring - Honeywell PRO3200 Installation And Configuration Manual

PRO3200 Installation
Setting Up the PRO3200 Hardware

3.6 Communications Wiring

The PRO3200 processor communicates to the host via on-board Ethernet 10Base-T/100Base-TX port
or on port 1. Port 1 may be configured as RS-232, two-wire RS-485. The RS-232 interface is for direct
one to one connection to a host computer, or a modem.
Ports 2 and 3 use the two-wire RS-485 interface only. The interface allows multi-drop communication
on a single bus of up to 4,000 feet (1,200 meters). Use shielded twisted pair (minimum 24 AWG) with
120-ohm impedance. Install termination jumpers only at the end-of-line unit.

Figure 3: PRO3200 Port Wiring

TXD/TR+
RXD/TR-
RTS
CTS
GND
PORT 1 CONFIGURED
as RS-232

3.7 Cabinet Tamper and Power Failure Input Wiring

Figure 4: PRO3200 TMP and FLT Terminals

Inputs TMP and FLT are used for monitoring cabinet tamper and power failure with normally closed
contacts. These two inputs are for contact closure monitoring only; do not use end-of-line (EOL)
resistor(s). If these inputs are not used, install a short piece of wire at the input to indicate a safe
condition.

3.8 Memory and Real Time Clock Backup Battery

The event log buffer and the real time clock are backed up by a 3V lithium battery. This BR2325,
BR2330, or CR2330 battery should be replaced annually. A replacement battery may be obtained from
Honeywell or a local battery retailer. However, the replacement battery must be UL recognized.
Warning:
16 www.honeywell.com
TB3
PORT 1 CONFIGURED
as 2-WIRE RS-485
Battery may explode if mistreated. DO NOT RECHARGE, DISASSEMBLE or DISPOSE
OF IN FIRE!
TB3
TXD/TR+
RXD/TR-
RTS
CTS
GND
PORT 2
2-WIRE RS-485
TB2
TR+
TR-
GND
PORT 3
2-WIRE RS-485
TB1
TR+
TR-
GND
+12V
GND