ABB ACS310 Quick Start Manual page 39

Quickstart Guide
ABB PLC and drives integration using Modbus RTU
Set function block inputs according to:

EN = TRUE (1) → The block will always be enabled.

PRIO = Left unconnected.

NVAR = Number of parameters to be read (2) → 2 parameters will be read in this example.

PRM_NUM = Start address of parameters to be read (3) → parameters 12.02 and 12.03 will be read in this
example.

DATA is connected via an "ADR" block to a new variable (4). Press the "..." button (5) and choose type
"ARRAY" (6), set Start index to 1 and End index to the number of values to be read, 2 in this example (7).
Set type to "INT" (8) and press "OK".

DRIVE_DATA = The same variable that is connected to "ACS_COM_MOD_RTU" → "DRIVE_DATA" (9).
Modbus RTU ‐ 39 ‐ PLC and drives integration