Xylem ADAQCPC Modbus Aquavar CPC - Manual (Page 4)

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Physical wiring of the MODBUS communication cable is to the RS485 terminal block, 28, 29 and 30. Use the
screen connections if the cable has one.
NOTE: The only application macros that will work with Modbus communica-tions enabled are: [1] Single Pump,
[4] Constant Slv and [5] Speed Cntrl. See parameter 1102 Applic Macro. Multicontrol or Synchronous will not
work with MODBUS. Set macro to SINGLE PUMP, Constant Slv or Speed Cntrl.
Configure Modbus Serial Communications
1. Set EFB Station ID – This is the address of each Aquavar on the network. Each drive must have a unique
station ID on the network.
a. Go to Group 32 – EFB PROTOCOL, press SEL.
b. Go to parameter 3202 – EFB STATION ID, press EDIT.
c. Set desired station ID using the UP or DOWN arrows, press SAVE.
Valid addresses are 1 – 247.
NOTE: Address 0 is used to broadcast
messages to all slaves on the network.
NOTE: It is the user’s responsibility to ensure that reading and writing is done to the correct address
(Aquavar or node) in the network. Reading or writing to the wrong node can cause unexpected results.
2. Set EFB Baud Rate – The settings used must be the same on the Modbus Master and the slaves (Aquavar
CPC). Default rate is 9.6 kb/s.
a. Go to Group 32 – EFB PROTOCOL, press SEL.
b. Go to parameter 3203 – EFB BAUD RATE, press EDIT.
c. Set the desired Baud Rate using the UP or DOWN arrows, press SAVE.
Valid baud rates are:
1.2 kb/s 19.2 kb/s
2.4 kb/s 38.4 kb/s
4.8 kb/s 57.6 kb/s
9.6 kb/s 76.8 kb/s
WIRING