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D-2

Appendix D Scanner

2000 microEFM

• Port BusDelay

• Port BusTimeout

• Real Date

• Real Time

Data Types

Various data types are implemented in the Scanner 2000. The following table lists the formats and the

numbers of bytes and registers associated with each type.

Data Type Byte Count Register Count

Floating Point (FP) 4 2

Floating Point (FP32) 4 1

Unsigned Word (U16) 2 1

Unsigned Long (U32) 4 2

Packed ASCII (PA) 2 1

The word ordering for multiple register data types, such as oating-point numbers or long integers, is for the

most signicant word to appear rst in the message.

The Unsigned Word (U16) type is used for 16-bit integers and ts into one register.

The Packed ASCII (PA) type contains two bytes that are two unsigned characters. Generally, multiple Packed

ASCII types are arranged consecutively for implementing strings. For example, the Device Name is a string

of 20 unsigned characters that is implemented as 10 Packed ASCII registers. Here is an example of a device

name that contains the string, “Test Well 413.”

240 54 65 Te

241 73 74 st

242 20 57 <SPACE> W

243 65 6C el

244 6C 20 l<SPACE>

245 34 31 41

246 33 FF 3<UNUSED>

247 FF FF <UNUSED><UNUSED>

248 FF FF <UNUSED><UNUSED>

249 FF FF <UNUSED><UNUSED>

Unused characters at the end of each string will report 0xFF hexadecimal.

Cameron Scanner 2000 microEFM User Manual

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