Annex A: List Of Acronyms; Annex B: Modbus Register Table - Weidmuller Transclinic 16i+ User Manual

Annex A: list of acronyms

DC: Direct Current
DIP: Dual In-line Package
EMC: ElectroMagnetic Compatibility
EMI: ElectroMagnetic Interference
ESD: ElectroStatic Discharge
IC: Integrated Circuit
LSB: Least Significant Bit
MPP: Maximum Power Point
MPPT: Maximum Power Point Tracker
MSB: Most Significant Bit
PCB: Printed Circuit Board
PDU: Protocol Data Unit (Modbus frame)
PLC: Programmable Logic Controller
PV: PhotoVoltaic
RF: RadioFrequency
RS–485: TIA/EIA–485–A "Electrical characteristics of generators and
receivers for use in balanced multipoint systems"
SPD: Surge Protective Device

Annex B: Modbus register table

(located at the very end of the user guide)
Notes:
• As defined in the Modbus standard, the register addresses shown in the table are
transmitted in the Modbus PDU as one unit less. Therefore register address 23 in
the table above is sent through the RS–485 line as 22. This is standard Modbus
behavior.
• Some users and even PLC and Scada systems use the obsolete Modicon format
for registers' addresses. As an example, input register 23 would be written
as 30023 using the old Modicon format.
• The values of the average power registers can be calculated by the Modbus client
instead of being transmitted. This saves network bandwidth.
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