Modbus Physical Interface - Davey EcoMatic COMM500 Instalación E Instrucciones De Funcionamiento

MODBUS physical interface

This product implements the MODBUS RTU protocol standard over an RS485 interface. The RS485
interface is accessible via the RJ45 connector on the bottom of the power supply unit. Pin connections
follow the official guidelines of the Modbus Organisation. Pin connections as follows, colour codes used for
standard T-568A and T-568B varieties of network cable are included for reference.
Pin Function
1 Reserved for future use
2 Reserved for future use
3 Reserved for future use
4 MODBUS B
5 MODBUS A
6
Reserved for future use
7 5V @ 100mA max
8 0V ground
The RJ45 interface of your ECOMATIC COMM series chlorinator is designed to maintain ingress protection
performance when used with the included sealing boot over an un-booted RJ45 plug.
MODBUS register specification
The product consists of holding registers which can be read (using MODBUS function 3) as below:
Register Name
1 Start delay
2 Direction
3
Run Current
4
V1
5 V2
6 Bridge Temp
7 Micro Temp
8 Pot Position
9 DIPS
10
ORP
RJ45 PINOUT
T-568A
Green/white
Green
Orange/white
Blue
Blue/white
Orange
Brown/white
Brown
Description
How long till start-up delay is complete (seconds)
The direction the cell is running (0=off, 1=forward, 2=reverse)
How much current is running through cell (mA)
Voltage on one side of cell cable at PCBA (mV)
Voltage on other side of cell cable at PCBA (mV)
Temperature in high current area of PCBA (°C)
Temperature in logic control area of PCBA (°C)
Position of output control knob (0 - 1024)
PCBA DIPs setting (b0 = DIP1; b1 = DIP2; b2 = DIP3; b3 = DIP4)
Whether ORP input is triggered (0=false; 1=true)
16
T-568B
Orange/white
Orange
Green/white
Blue
Blue/white
Green
Brown/white
Brown