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Start Address Register block Readable/Writeable Description
001 VR Series conguration R/W Conguration of the VR module.
021 VR Series status R Status registers for the VR module.
101 Pump control R/W Pump control registers.
201 Pump status R Status data from the pump.
301 Pump data R Measured data from the pump.
NOTE: All register addresses are 1-based. Address 001 is thus transmitted over bus as 0x0000.
All addresses contain 16 bit (one Word) registers. Some are bit interpreted while others are combined for a 32 bit value.
VR 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.
NOTE: All values in this block are stored in nonvolatile memory immediately after write.
NOTE: See section “Error! Reference source not found. Error! Reference source not found.” and use Mode 8 or 9 to restore default settings
if you cannot access the controller after writing to these registers.
Register overview
VR Series Modbus RTU registers are grouped in the following register blocks:
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