22/2
8
MODBUS SETUP & MEMORY MAP
HEVAC CONTROL AGENCIES PTY LTD. 7/54 HOWLEYS RD.
NOTTINGHILL, VIC. 95627888
www.hevac.com.au
2
8/11
/19
Modbus connections X5 (A) & X6 (B) are factory enabled by default using the bottom circuit board input pins CN3-1&2.
NOTE If X7 isnt used for CO2 measurement , X7 can be set as ground source for the modbus shield connection by
setting input pin CN4 to the "C" position, otherwise the shield wire needs to be connected to a good earth. CN4 by default
is set to the "V" position for X7 to be used as a CO2 input.
The factory modbus settings are address = 1
& Baud rate set to 38400.
Address range is Selectable from 1 to 247,
Baud rate selectable from 2400, 9600, 19200,
38400, 57600 to 115200.
