User Guide

ViewStat Installation and Wiring

iewStat Communicating Thermostat

Connecting to an Axcess Control System (via AXC-232++, AXB-EM232, or Axcent3/

PRO)

To connect the ViewStat to an Axcess control system via an Axcess Cardframe (cardframe must be

equipped with an AXC-232 232/422/485 Control Card), AXB-EM232 Enhanced Master, or

Axcent3(PRO) Controller, refer to the card-edge pinout information below:

FIG. 8 shows the wiring configuration for Axcess systems:

Axcess System Card Edge Pinouts

Pin Signal Function

1 GND Ground (RS-232)

2 RX Receive data (RS-232)

3 TX Transmit data (RS-232)

4 +12V Power

5 RX - Receive data (RS-422)

6 RX + Receive data (RS-422)

7 TX - Transmit data (RS-422)

8 TX + Transmit data (RS-422)

9 GND Ground

10 CTS Clear-to-send (hardware handshaking)

11 RTS Ready-to-send (hardware handshaking)

12-16 not used

FIG. 8 Connecting the ViewStat to an Axcess Control System

ViewStat

(Communication

terminal)

Axcess

Control

System

AXC-232(++)

AXB-232(++)