
RXT-320 Wireless Instruction Manual ii
Table of Contents
1. Introduction .......................................................................................................................................................... 1
1.1 Description .................................................................................................................................... 1
1.2 RXT-320 Wireless Radio............................................................................................................... 2
1.3 Model 100 Terminal Board (Optional) ........................................................................................... 3
1.4 Smart Battery Pack (Optional) ....................................................................................................... 4
1.5 Quad Battery Charger (Optional) ................................................................................................... 4
2. Installation............................................................................................................................................................ 6
2.1 Special Conditions of Use.............................................................................................................. 6
2.2 Mounting....................................................................................................................................... 7
2.2.1 Remote Mounting...................................................................................................................... 8
2.3 Remote Mounting Steps................................................................................................................. 9
2.4 Wiring Connections/Functions......................................................................................................11
2.4.1 VDC Power & VDC Return......................................................................................................11
2.4.2 ModbusTM A & B ...................................................................................................................12
2.4.3 Alarm 0-3.................................................................................................................................12
2.4.4 4-20mA A & B.........................................................................................................................12
2.4.5 Serial Clock & Serial Data Line................................................................................................13
2.4.6 Programming Data, Clock & Reset ...........................................................................................13
2.5 Model 100 Terminal Board Settings..............................................................................................13
2.6 Remove From Service...................................................................................................................14
3. Operation and Configuration ............................................................................................................................... 15
3.1 Transparent Mode.........................................................................................................................15
3.2 Slave Configuration with Controller..............................................................................................15
3.3 Slave Configuration with Sensor...................................................................................................15
3.4 Slave Configuration with Alarm Station........................................................................................16
3.5 Sleep Mode...................................................................................................................................16
4. Modbus Communications.................................................................................................................................... 17
4.1 General ModbusTM Description...................................................................................................17
4.1.1 ModbusTM Exceptions.............................................................................................................17
4.1.2 ModbusTM Broadcast Request.................................................................................................18
4.2 ModbusTM Register Map & Description ......................................................................................18
4.2.1 Register – Detcon Type ............................................................................................................19
4.2.2 Register – Alarm Outputs .........................................................................................................19
4.2.3 Register – 4-20mA Reading......................................................................................................19
4.2.4 Register – Battery Info..............................................................................................................20
4.2.5 Register – uC Version...............................................................................................................20
4.2.6 Register – Sleep Time...............................................................................................................20
4.2.7 Register - Control .....................................................................................................................21
4.2.8 Register – Status.......................................................................................................................21
4.2.9 Register – Address Switch ........................................................................................................21
4.2.10 Register – Timestamp...........................................................................................................21
5. Troubleshooting Guide........................................................................................................................................ 22
6. Customer Support and Service Policy.................................................................................................................. 23
7. RXT-320 Wireless Transceiver Warranty ............................................................................................................ 24
8. Appedix.............................................................................................................................................................. 25
8.1 Specifications ...............................................................................................................................25
8.2 Spare Parts....................................................................................................................................26
9. Revision Log ...................................................................................................................................................... 26