User`s manual

CHAPTER 2: PROGRAMMING

This chapter of the Siemens (S5 Communications) Reference addresses

supported PLC registers and data formats, screen types and definitions,

and PLC-specific configuration requirements.

Supported Operand Types

The SOI supports the following operand types in your S5 processor:

Operand Definition Address Range Allowed Data Formats

I (IW, IB) Inputs 128 bytes (0-127) KH, KM, KF, KS, KB

Q (QW, QB) Outputs 128 bytes (0-127) KH, KM, KF, KS, KB

F (FW, FY) Flags 256 bytes (0-255) KH, KM, KF, KS, KB

T Timers 128 words (0-127) KT, KM

C Counters 128 words (0-127) KC, KM

DW Data Words 256 words (0-255) KH, KM, KF, KS, KB

Note: The S5 operands listed above are a subset of the operands defined by the

S5 protocol. Thus, some of the operands used by high-end and low-end

SIMATIC S5 controllers are not supported by this protocol

implementation.