User`s manual

SIEMENS (S5 COMMUNICATIONS) REFERENCE

The S5 operands listed above can be addressed as bits, words, or bytes

(exception: Timers and Counters are addressed as bits or words). Input

Word 0, for example, would contain Input Bytes 0 and 1. Input Word

1 would contain Input Bytes 1 and 2. To address a word, the IW, QW,

FW, T, C, and DW ID codes are used. To address a byte, the IB, QB,

FY, DL (Data Word Left), and DR (Data Word Right) codes are used.

Supported Data Formats

The data selected for a particular PLC location must reflect the same

format as the data actually stored in that location. This is the only way

you can ensure that correct, consistent information is displayed on the

SOI products.

For example, selecting the Hex (KH) format for one location will

display data in one way. Selecting the Byte (KB) format for the same

location will display the data in another way. It is important to under-

stand each data format and its characteristics.

The following table illustrates all supported S5 data formats for the S5

processor and the ranges applicable to each:

Data Format Definition Range

KM Bits 0000 0000 0000 0000 to 1111 1111 1111 1111

KH Hex Binary 0000 to FFFF, or BCD 0000 to 9999

KF Fixed Point -32768 to 32767

KS ASCII Data 1 ASCII character / byte

KB Unsigned Byte 0 to 255

KC Counter Load Value 000 to 999 BCD

KT Timer Load Value abc.d, abc = count 0-999BCD, d = timebase 0-3

(0= 0.01 sec/count, 1= 0.1 sec/count, 2= 1.0 sec/

count, 3= 10 sec/ count)

Note: See your PLC manual for more detail on the S5 data formats.

The available data formats are described below.