Overview

***also see data sheet attached at the bottom of the page.

The Zone Gateway (ZG) is one of the main components of the  Hausmate system and it collects raw digital and analogue inputs from sensors and switches and sends the output data to the Host. The ZG allows easy connection of cables to sensors and output devices, as well as protection to the ZG processor IC (Integrated Circuit) input/output (I/O) pins.


In a typical installation there will usually be one or two Zone Gateways per floor, each of them with an unique configuration which reflects the inputs it monitors and the outputs that it controls. 


Each ZG has ten RJ45 sockets, each socket being configured by the Host, which holds details of the connections of every pin in every socket and sends appropriate configuration to the ZG.



The ZG is connected to the building standard LAN (Local Area Network) using the UDP protocol (User Datagram Protocol). 

It is powered via the Ethernet connection from the PoE (Power over Ethernet) Network switch, so they do not require another power source. It is normally plugged into the first PoE port on the switch and other units (e.g. CCTV camera, Wireless Access Points etc.) are plugged in after. 






Hardware

The hardware used is currently a Freetronics Ethermega Arduino clone (add more info about Arduino ?)


Sizes required: 

  • allow a minimum of 225 x 125 x 35 mm (W x H x D) for the unit and cable trunking extra. 
  • ten cables with RJ45 along bottom long edge
  • one cable along right - hand short edge


ZG LEDs significance: 

  • Red   - OFF - no power 
                   - flashing 1Hz - power on, looking for a Host to connect to 
                   - ON - connected to a Host
  • Blue  - it flashes every time a message is sent/received to/from the Host
  • Amber - currently not used
HEX switches
  • are set to identify each ZG in an installation


RJ45 pin connections / functions: These have been chosen in order to minimise the risk of anything being damaged if the wrong cable is plugged into a socket and also to reduce the chance of cross - talk from one signal affecting another. 

Pin Twisted pair PoE  D-Link DGS PoE DMX  encoder / RGB LED 3 i/p SB(Sensor Board)
 CAT5 Wire color Rocker switches
1 1 V+ V+ data+ chA (dig i/p int) Ambient light (anl i/p1) white/orange 1st (left) switch
2 1 V+ V+ data- chB (dig i/p) Temperature (anl i/p2) orange 2nd switch
3 2 V- V-
0V 0V white/green 0V (common for all switches)
4 3 V+
V+ button dig i/p) PIR (dig i/p1) blue 3rd switch
5 3 V+
V+ V+ (5v0) V+ (5v0) white/blue 5V (not used)
6 2 V- V-
PWM1 (anl o/p) Green door (dig i/p2) green 4th switch
7 4 V-
V- PWM2 (anl o/p) Red
 humidity (anl i/p3) white/brown 5th switch
8 4 V-
V- PWM3 (anl o/p) Blue
 Spare (dig i/p3) brown 6th switch

ZG Standard wiring:

1. PoE network socket - standard Ethernet RJ45, used to connect the ZG to the Host computer or backup PLC. It is also used to provide power to the ZG via industry standard PoE to IEEE 802.3aF. This is part of the Ethermega daughter card in the ZG.

2. I/O Sockets
There are three different I/O socket types on the ZG, depending on the groupings of pins for each socket.
  • Sockets 1-4: connect to the I/O pins which can handle switches, encoders, the RGB LED indicators of the Haze, or any digital I/O compatible with the Ethermega.
  • Socket 5: is a group of I/O pins which cand handle switches, encoders or any digital I/O compatible with Ethermega, but cannot drive the RGB LEDs as it does not have any analogue output ability.
  • Sockets 6-10: are connected to the I/O pins which can handle analogue inputs (x3) and are used to connect to the Sensor Board.

Zone Gateway I/O socket wiring table

 RJ45 wiring
 		SK
 1-4 
 For switches/
encoders/RGB-LED/
general I/O
 SK
 5 
 For switches/ encoders/
general I/O 
 SK
 6-10
 		For punchdown SU/
3 anl input SU/
general I/O
standard wire color pin description pin description pin description
white/orange 1 dig I/O 1, (enc chA)
 1 dig I/O 1, (enc chA) 1 anl I/O 1, dig I/O 4, (light)
orange 2 dig I/O 2, (enc chB)
 2 dig I/O 2, (enc chB) 2 anl I/P 2,
dig I/O 5, (temperature)
white/green 3 0 volts, GND
 3 0 volts, GND 3 0 volts, GND
blue 4 dig I/O 3, (enc button) 4 dig I/O 3, (enc button) 4 dig I/O 1, (PIR)
white/blue 5 +5 volts 5 +5 volts
 5 +5 volts
green 6 dig I/O 4, PWM1, (LED grn) 6 dig I/O 4, PWM1, (LED grn) 6 dig I/O 2
white/brown 7 dig I/O 5, PWM2, (LED red)
 7 dig I/O 5, PWM2, (LED red) 7 anl I/P 3,
dig I/O 6, (humidity)
brown 8 dig I/O 6, PWM3, (LED blu) 8  dig I/O 6, PWM3, (LED blu) 8  dig I/O 3



Resetting a ZG

The easiest way to reset a ZG is to unplug its ethernet connection for a couple of seconds and then reconnect. It takes about 30 seconds to power up and start working again. It does not matter which end is un-plugged - but often it is easier to do it at the network switch.