CARLO GAVAZZI UDM 40 - PROGRAMMING Manual de usuario descargar pdf (Pagina 6)

CARLO GAVAZZI

CONTROLS

SERIAL COMMUNICATION PROTOCOL

UDM - USC

V1 R1

Page

2 RAM VARIABLES MAP

2.1 VARIABLES MAP

Tab. 2-1

Word

ADDRESS

BYTE

VARIABLE

1 3001h 2 Measured value

2 3002h 2 Max value

3 3003h 2 Min value

4 3004h 2 Modules

5 3005h 2 I/O status

6 3006h 2 Firmware revision

NOTE:

- All the variables in this table are contiguous. It is possible to read the whole area with a

single command sending, in the request frame, 3001h as data address and 0006h as

number of words.

- The data are sent in 2-byte groups in the following order: MSB, LSB.

2.2 VARIABLES FORMAT

2.2.1 Measured, max and min values

The value of the measured, max and min are stored as a 2-byte (1 word) integer value with sign (2’s

complement).

The decimal point have to be set according to the Decimal Point word coding (see Tab. 3-10).

2.2.1.1 Reset of the Max and Min values

The value of max and min values can be reset by the following commands:

Max reset request frame (8 byte):

01h

06h

30h

02h

D8h

F1h

5Ch

8Fh

Min reset request frame (8 byte):

01h

06h

30h

03h

27h

0Fh

3Dh

3Fh

1 2 3 4 5 6 7 8 9 10 11 ... 22 23

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CARLO GAVAZZI UDM 40 - PROGRAMMING Manual de usuario Pagina 6

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