Taco 00e Series

-48-
Pump control registers
Registers in this block are read with either function codes 0x03 or 0x04.
They can be written as holding registers with function codes 0x06 and 0x10.
Address Register name Range Description
101 ControlReg
b0:
RemoteAccess
Control bit that sets local or remote control.
Setting this bit will enable pump control over Modbus.
0 = Local
1 = Remote (controlled by Modbus master).
b1:
OnOReq
Control bit that switches the pump on or o.
0 = O (stop)
1 = On (start).
b2..3:
RESERVED
---
b4:
Control bit saves values in register block as default.
0 = No save
1 = Save as default. This value will be reverted back to 0 when set.
b5..15:
RESERVED
---
102 AltControlMode ---
Alternative Control mode. Use of register 108 is preferred.
Sets the control mode enumeration.
0 = ConstantRPM
1 = ConstantRPM
3 = ConstantHead
4 = ConstantHead
5 = ConstantHead
6 = ProportionalHead
128 = AutoHeadMode
NOTE: values outside this range reserved.
103 Operation Mode --- RESERVED
104 SetPoint 0.. 10000
Sets desired pump set point.
0 will stop the pump. 10000 will set the pump
to maximum output for desired mode.
Values outside of valid range will cause the
pump to operate with front panel set values.
105 RelayControl 0..2
Congures relay output.
0 = indicates fault
1 = indicates pump ready
2 = indicates pump operation
See section “Error! Reference source not found.
Error! Reference source not found.”.
106..107 RESERVED --- ---
108 ControlMode 0..3
Sets the pump control mode.
0 = AutoHeadMode (Automatic head mode)
1 = ProportionalHead (Head proportional to ow)
2 = ConstantHead (Head is kept constant)
3 = ConstantRPM (Speed is kept constant)
NOTE: values outside this range reserved.
See section “Error! Reference source not found. Error! Reference
source not found.” for exact parameter to be controlled.