Hardware reference guide

Intelligent/Special Purpose

352

35013379 02 October 2007

Command 3

Response

Format

The following figure shows the Command 3 response format.

Command 4,

READ RATE

SAMPLE or

READ LAST

COUNT VALUE

BEFORE MOST

RECENT

PRESET, Output

(4X = 04XX hex)

The following figure shows the 4x counters for Command 4.

16151413121110987654321

Read Counter Inputs

Command Byte

3X+1 and 3X+2 = Counter 1’s 16 or 32 bit Current Count.

3X+3 and 3X+4 = Counter 2’s 16 or 32 bit Current Count.

16151413121110987654321

3X+5

1 = Field Power Lost

16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

1 = Preset Counter 1

1 = Enable Counter 1

1 = Disable Counter 1

1 = Preset Counter 2

1 = Enable Counter 2

1 = Disable Counter 2

Read Rate/Last Count

Command Bit

This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com