Laurel Electronics Custom ASCII Protocol For Laureate Series 2 Digital Panel Meters, Counters, Timers & L-Series Transmitters User Manual

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CHARACTER 3: Command character:

Read bytes from RAM Memory

Write bytes to RAM Memory (DPM and Scale meter only)

Read bytes from Upper RAM Memory

Write bytes to Upper RAM Memory

Read words from Non-Volatile Memory

Write words to Non-Volatile Memory

CHARACTER 4: Number of bytes (G, F, R, Q) or words (X, W)

Code #

1 = 1
2 = 2
3 = 3
4 = 4
5 = 5
6 = 6
7 = 7
8 = 8

9 = 9

A = 10
B = 11
C = 12

D = 13

E = 14

F = 15

G = 16

H = 17

I = 18

J = 19

K = 20

L = 21

M = 22

N = 23
O = 24

P = 25

Q = 26
R = 27

S = 28

T = 29

U = 30

CHARACTERS 5, 6

See tables for the RAM MEMORY ADDRESSES and NONVOLATILE MEMORY ADDRESSES with
their respective data definitions.

CHARACTERS 7 & UP: Data to be written (F, Q, W).

GENERAL, READING AND WRITING RAM MEMORY DATA

RAM memory data is read and written as a continuous string of bytes consisting of 2 hex
characters (0-9,A-F) per byte. Included in the command are the total number of bytes to be
transferred and the most significant address in RAM of the continuous string of bytes. The
format is:

Read lower RAM data *1Gnaa
Write lower RAM data *1Fnaa
Read upper RAM data *1Rnaa
Write upper RAM data *1Qnaa
where: n

is the number of bytes to be read or written.

is the most significant address in RAM of the bytes to be read or written.

is n bytes of 2 hex characters per byte in order from the most to the least
significant byte.