Function Block Descriptions

Introduction

This chapter describes the function blocks in the PLCCommunication library.

What Is in This Chapter?

This chapter contains the following topics:

oADDM: Convert a String into an Address

oREAD_VAR: Read Data from a Modbus Device

oWRITE_VAR: Write Data to a Modbus Device

oWRITE_READ_VAR: Read and Write Internal Registers on a Modbus Device

oSINGLE_WRITE: Write a Single Register to a Modbus Device

oSEND_RECV_MSG: Send and/or Receive User-Defined Messages