APC GALAXY 6000 User Manual

4.5 (2)
APC GALAXY 6000 User Manual

MGETM GalaxyTM 6000

50, 60 Hz 250 - 600 kVA

"GTC link" communication interface

User manual

6739389EN/FB - Page 1

Page 2 - 6739389EN/FB

Contents

Presentation ......................................................................................................

4

Introduction ................................................................................................................

4

"GTCZ" and "GT2Z" boards features .........................................................................

4

Communication settings ...........................................................................

5

JBUS protocol ..................................................................................................

6

Introduction ................................................................................................................

6

Principle .....................................................................................................................

7

Synchronizing data exchanges ..................................................................................

7

Description of request and response frames .............................................................

7

Checking received messages on the slave-side ........................................................

8

Functions ....................................................................................................................

9

CRC 16 algorithm ....................................................................................................

14

UPS theory of operation ..........................................................................

18

Unitary UPS .............................................................................................................

18

Parallel connected UPS with "Static Switch" cubicle ...............................................

19

UPS without Mains 2 ................................................................................................

19

Unitary UPS .....................................................................................................

21

Block diagram ..........................................................................................................

21

Measured quantities .................................................................................................

21

Main status bits ........................................................................................................

22

Operating modes .....................................................................................................

22

Parallel connected UPS ...........................................................................

24

Block diagram ..........................................................................................................

24

Measured quantities .................................................................................................

24

Main status bits of system operations ......................................................................

25

Operating modes .....................................................................................................

25

Static switch cubicle ..................................................................................

26

Block diagram ..........................................................................................................

26

Measured quantities .................................................................................................

26

Main status bits of system operations ......................................................................

27

Operating modes .....................................................................................................

27

System information ....................................................................................

28

Message format .......................................................................................................

28

Example of read data ...............................................................................................

28

Sample commands ..................................................................................................

28

List of variable fields ................................................................................................

28

General definitions ...................................................................................................

29

Signaling field ...........................................................................................................

29

Tables measured data ..............................................................................................

29

Tables of binary data ................................................................................................

31

Table of control devices ...........................................................................................

33

Telemonitoring information .......................................................................................

33

Glossary of information descriptors .........................................................................

34

Glossary of telemonitoring information descriptors ..................................................

37

All MGETM GalaxyTM 6000 products are protected by patents. They implement original APC by Schneider Electric technology not available to other manufacturers.

This document may be copied only with the written consent of APC by Schneider Electric.

Authorized copies must be marked "APC by Schneider Electric GTC link communication interface user manual No. 6739389EN".

6739389EN/FB - Page 3

Presentation

Introduction

The "GTC link" communication interface is designed to transmit

MGETM GalaxyTM 6000 UPS operating information and remote "on/off" commands (if available) to an external computer.

The JBUS hexadecimal communication protocol is used (the JBUS ASCII mode is not used in this application).

The "GTC link" features two symmetrical communication channels, both with a simplified V24 (RXD and TXD only) and an RS485 interface.

It consists of a "GTCZ" communication board (central unit) and a "RAUZ 1" (communication network management and interconnection board).

In option, two additional communication ports can be added: "GT2Z" board (central unit) and "RAUZ 2" board (communication network management and interconnection board).

Refer to the "communication options connection manual" of

MGETM GalaxyTM 6000 nr 6739388XU, for all informations about connections.

"GTCZ" and "GT2Z" boards features

The "GTCZ" and "GT2Z" boards are functionally divided into two main modules:

The ACQ module

performs data acquisition;

monitors the status bus of the monitor/control boards;

computes physical quantities and battery backup time;

processes alarms;

sends commands to monitor/ control boards;

stores configurable parameters and communicates with the "Soft Tunor" software, used by APC by Schneider Electric after-sales service;

transfers data using the on-board communication channels.

The COM module

The COM communication module is designed for external devices (e.g. "AMUZ" type board of a "Monitor" or "Tele-Monitor") to:

retrieve information and parameters processed by the ACQ;

send commands to monitor/ control boards;

be integrated into other systems (remote indications and supervision).

Each "GTCZ" or "GT2Z" board is equipped with two symmetrical communication ports, COM1 and COM2:

on the "GTCZ" board:

COM1 for a "display devices" network consisting of "AMUZ" boards in a unitary or parallel connected UPS configurations,

COM2 for a supervisory system;

on the "GT2Z" board:

COM1 and COM2 for a supervisory system.

The "GTCZ" and "GT2Z" boards are configured with the APC by Schneider Electric after-sales customization software called "Soft Tunor".

The computer link is via the test connector located on the front panel of the cubicles and performs:

configuration, calibration and control of the ACQ module;

configuration of COM1 and COM2 ports.

Page 4 - 6739389EN/FB

Communication settings

The COM1 and COM2 communication ports can be configured as follows:

data rate: 1200, 2400, 4800, 9600 Baud;

data bits: 8 (always);

parity: none, odd, even;

stop bits: 1 or 2;

 

slave address: 20H to F8H in

 

command masks;

increments of 8H;

 

other parameters (modem type,

 

interface:

telephone number, handshaking,

 

0

= RS232 simplified,

modem protocol, password)

 

1

= RS232 complete

reserved for later use.

(not implemented),

 

 

 

2

= RS485;

 

 

Location of the "GTCZ" and "GT2Z" boards in the cubicle electronics

 

 

Acquisition

 

 

 

 

Status

CRIZ

(only in rectifier-inverter cubicle)

 

 

 

 

 

Test channel

 

 

 

 

Acquisition

 

 

 

INTERNAL BUS

Status

CROZ

(only in rectifier-inverter cubicle)

 

 

 

 

Test channel

 

 

 

 

Acquisition

 

 

 

 

Status

AROZ

(in all cubicles)

 

 

 

 

 

Test channel

 

 

 

Test channel

Acquisition

 

COM1

SRIZ

 

 

 

Status

Status

 

 

 

 

 

 

 

Test channel

GTCZ

RAUZ 1

 

 

 

 

COM2

 

 

Commands

 

 

Soft Tunor

 

Acquisition

 

 

 

 

 

COM1

 

 

 

 

 

 

Status

 

 

 

 

Test channel

GT2Z

RAUZ 2

 

 

 

 

COM2

 

 

Commands

 

 

 

 

 

 

6739389EN/FB - Page 5

JBUS protocol

Introduction

JBUS protocol can be used to read or write one or more bits or words. In the interest of simplicity, this document describes only the procedures necessary for operation and monitoring of the APC by Schneider Electric unit.

Communications are initiated by the master and include a request from the master and a response from the slave.

Master requests must be addressed to one specific slave (identified by its address in the first byte of the request frame) as shown in the diagram opposite:

Master

request

response

Slave

 

Slave

 

Slave

 

 

 

 

Response

analysis

 

 

 

 

and preparation

 

 

 

 

of next exchange

 

 

 

Wait

 

 

Wait

MASTER

 

 

 

 

 

 

 

 

 

request

 

 

 

request

 

 

 

 

 

 

 

 

 

 

 

to slave 1

 

 

to slave N

SLAVE 1

response

request processing

SLAVE N

response

PHYSICAL

MEDIA

Exchange i

Exchange i+1

Page 6 - 6739389EN/FB

JBUS protocol (continued)

Principle

A full understanding of the protocol is only required if the master is a computer that must be programmed.

All communications include 2 messages: a request from the master and a response from the slave.

Each message or frame containes 4 types of information:

slave address (1 byte)

The slave address specifies the destination station (see address list):

unitary rectifier-inverter cubicle,

parallel rectifier-inverter cubicle,

Static Switch cubicle.

If zero, the request addresses all slaves and there is no response message (in which case it is a broadcast message, a function not used in this application);

function code (1 byte) Selects a command (e.g. read or write a bit or a word) and checks that the response is correct.

The JBUS protocol comprises 10 functions of which 3 may be used in this application: function 3 (read n output or internal words), or function 4 (read n input words), or function 16 (write n words);

information field (n bytes)

The information field contains the parameters related to the functions: bit address, word address, bit value, word value, number of bits, number of words;

check word (2 bytes)

A word used to detect transmission errors.

Synchronizing data exchanges

Any character received after 3 or more character lengths of silence is interpreted as the start of a frame. Therefore, a minimum silence of 3 character lengths between frames must be respected.

Description of request and response frames

request

information requested: bit/word address, bit/word value, bit/word number.

1 byte

1 byte

 

 

 

 

 

 

 

 

 

 

 

 

slave adress

function

information

(1 à FF)

code

 

 

 

 

 

 

n bytes

This function code selects one of 10 possible commands:

-Function 1 : read n output or internal bits

-Function 2 : read n input bits

-Function 3 : read n output or internal words

-Function 4 : read n input words

-Function 5 : write one bit

-Function 6 : write one word

-Function 8 : data exchange diagnostics

-Function 11 : read event counter

-Function 15 : write n bits

-Function 16 : write n words

2 bytes

check word

When the message is received, the slave reads the check word and accepts or refuses the message

values of bits or words read values of bits or words written

number of bits or words

response

slave adress

function

data

CRC

(1 à FF)

code

check word

 

1 byte

1 byte

bytes

2 bytes

6739389EN/FB - Page 7

JBUS protocol (continued)

Checking received messages on the slave side

After the master sends a request containing the slave address, the function code and data, it computes the CRC and sends it as the check word (CRC 16).

When the slave receives the request, it stores the message in memory and calculates the CRC 16 to compare it to the received CRC 16.

 

slave

 

master

slave address

 

 

function

CRC 16

 

computation

 

 

 

data

 

 

CRC 16

 

 

CRC 16 comparison

 

If the message is incorrect (unequal CRC 16 values), the slave does not respond.

If the message received is correct but the slave is unable to process it (incorrect address, incorrect data, etc.), the slave returns an error message with the following contents (see opposite):

 

 

 

 

 

Error codes:

 

 

 

 

 

 

response

 

 

 

 

 

 

 

 

 

 

 

 

1.

Unknown function code

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.

Incorrect address

 

 

 

 

 

 

 

 

 

 

3.

Incorrect data

 

 

 

 

errors handled

 

 

 

 

 

4.

Station not ready

 

 

 

 

 

 

 

 

 

 

 

 

 

by the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8.

Write error

 

 

 

 

 

 

 

 

 

 

 

 

 

communication

 

 

 

 

 

9.

Field overlap

 

 

 

 

 

 

function code

 

 

 

 

 

port

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

received and

 

 

 

 

 

 

 

 

 

 

MS bit = 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

slave

1

 

 

 

 

 

 

 

 

CRC 16

 

address

 

 

 

 

 

 

 

 

 

(1 à FF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 byte

 

 

 

1 byte

1 byte

2 bytes

 

 

 

 

 

 

 

 

 

 

 

 

example

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

01

09 H

 

00

 

00

00

00

DD CB

request

 

 

 

 

 

 

 

 

 

 

 

response

 

 

 

 

 

 

 

 

 

 

 

 

01

89 H

 

01

 

86 50

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Page 8 - 6739389EN/FB

JBUS protocol (continued)

Functions

 

 

 

 

 

 

 

 

 

 

 

Function 1 and 2: read N bits

 

 

 

 

 

 

 

 

 

 

 

function 1: read output or internal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

bits;

 

 

 

 

 

 

 

 

 

 

 

request

 

 

 

 

 

 

 

 

 

 

function 4: read input bits.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The number of bits must be less

 

 

 

 

 

 

 

 

 

 

 

 

 

slave address

 

 

1 or 2

 

address of

number of bits

CRC 16

 

than or equal to the bit field size

 

 

 

 

 

 

 

 

 

first bit

 

 

 

 

 

to read

 

(see memory board).

 

 

 

 

 

 

MSB LSB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 byte

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 byte

 

2 bytes

2 bytes

2 bytes

 

response

 

 

 

 

 

slave address

1 or 2

number of

first

last

CRC 16

bytes

byte

byte

 

 

read

read

read

 

1 byte

1 byte

1 byte

 

bytes

2 bytes

byte detail:

 

 

 

 

 

last bit transmitted

first bit transmitted

Unused bits are set to zero

example

Reading bits at location 404 to 411 of slave at address 20H (charger signals)

request:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

20

01

 

0404

0E

 

66 FE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

response:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

20

01

 

02

10101001

 

00101110

FB B7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(binary values)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

40B

 

404 411

 

40C

 

 

 

 

 

6739389EN/FB - Page 9

JBUS protocol (continued)

Function 3 and 4: read N words

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The number of words must be less

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

than or equal to the word field size

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

request

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(see memory board).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

function 3: read output or internal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

slave address

 

 

3 or 4

 

adress of

 

 

 

 

number of

 

 

CRC 16

 

words;

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

first bit

 

 

 

 

words

 

 

 

 

 

 

 

 

function 4: read input words.

 

 

 

 

 

 

MSB

LSB

 

MSB

 

LSB

 

 

 

 

 

 

 

 

1 byte

 

 

1 byte

 

2 bytes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2 bytes

2 bytes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

response

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

slave address

 

 

3 or 4

 

number of

 

 

first word

 

last word

 

 

CRC 16

 

 

 

 

 

 

 

bytes read

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PF

 

pf

 

PF

 

pf

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 byte

 

 

1 byte

 

1 byte

 

 

2 bytes

 

2 bytes

 

 

2 bytes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

example

Reading words at location 146 to 14B of slave at address 28H (voltage fields)

request:

 

 

 

 

 

 

 

 

28

03

 

0146

 

06

 

A7 E0

 

 

 

 

 

 

 

 

 

 

 

 

 

response:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

28

03

 

0C

 

XXXX

 

YYYY

CRC 16

 

 

 

 

 

 

 

 

 

 

 

 

 

word 0146

 

word 014B

 

Function 5: writing a bit

 

request

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

slave address

 

5

 

bit address

bit value

 

0

CRC 16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 byte

 

1 byte

 

2 bytes

 

1 byte

 

1 byte

2 bytes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

write 0

 

 

 

 

 

 

 

bit set to 0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

bit set to 1

 

 

write FF

 

 

 

 

 

 

 

 

 

 

response

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

slave address

 

5

 

bit address

bit value

 

0

CRC 16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

In function 5 the response and request frames are identical.

example

Setting bit location C05 to 1 of slave at address 40H (inverter on)

request:

40 05 0C05 FF 00 90 7A

Page 10 - 6739389EN/FB

JBUS protocol (continued)

Function 6: writing a word

 

request

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

slave address

 

6

 

word address

word

CRC 16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 byte

 

 

1 byte

 

2 bytes

2 bytes

2 bytes

 

 

 

 

 

 

 

 

 

 

 

 

response

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

slave address

 

6

 

word address

word

CRC 16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The response is echoed acknowledging that the word sent has been received.

example

Writing the value 1000 into the word location 810H of slave at address 50H

50

06

08 10

10 00

8A 2E

 

 

 

 

 

Function 8: reading error diagnosis counters

Each slave manages a set of nine 16 bit counters for error diagnosis (see opposite):

- request / response:

slave address

8

 

sub-function

data

 

CRC 16

 

code

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 byte

1 byte

2 bytes

-the slave must echo the request

-reset error diagnosis counter

-read the total number of:

received frames with CRC error (CNT 1)

received frames with CRC error (CNT 2)

number of exception responses (CNT 3)

frames addressed to the station (CNT 4) (not including broadcast)

broadcast requests received (CNT 5)

number of NACK responses (CNT 6) unit not ready responses (CNT 7)

illegal characters (CNT 8)

 

 

2 bytes

2 bytes

 

 

 

 

 

 

 

 

 

 

00

XYZT

X, Y, Z, T are user

 

 

 

 

defined (transmission

 

 

 

 

parameters)

0A

0000

 

0B

XXXX

 

0C

XXXX

 

0D

XXXX

requests:

 

 

 

 

0E

XXXX

XXXX equals 0000

response:

 

 

 

 

0F

XXXX

XXXX is the counter

value

 

 

 

 

10XXXX

11XXXX

12XXXX

6739389EN/FB - Page 11

JBUS protocol (continued)

Function 11: reading event counters

The master and each slave have one event counter.

This counter is incremented each time a frame is received and interpreted correctly by the slave (except for function 11 itself).

A correctly transmitted message increments the counter. If the slave sends an exception response, the counter is not incremented.

The master can read the counter to determine whether or not the slave correctly interpreted the command (incremented the counter or not).

These functions can be used to diagnose the data exchange taking place between master and slaves.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

request

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

slave address

 

 

0B

 

CRC 16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

response

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

slave address

 

 

0B

 

 

0

 

slave

 

CRC 16

 

 

 

 

 

 

counter word

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 byte

 

 

1 byte

2 bytes

 

2 bytes

2 bytes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

If the master counter equals the

 

 

If the master counter is one higher

slave counter, the slave executed

 

than the slave counter, the slave

the command sent by the master.

 

did not execute the command sent

 

 

 

 

 

 

 

 

 

by the master.

 

 

Function 15: writing n consecutive bits

request

 

slave adress

 

0F

 

address of

 

 

 

number

 

 

number

 

 

bit data

 

 

CRC 16

 

 

 

 

the first bit

 

 

 

of bits

 

 

of bytes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 byte

1 byte 2 bytes

 

2 bytes

 

1 byte

 

 

 

2 bytes

 

 

 

 

 

 

 

 

n bytes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

réponse

 

 

 

 

 

 

 

 

2 X 1968

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 N 246

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

first bit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

last bit of

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

last bit of

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

of

 

 

 

 

 

 

 

 

first bit of

 

first byte

 

 

 

 

first byte

 

 

 

 

 

 

 

byte N

 

 

 

 

 

byte N

 

first byte

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N bytes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

response

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

slave address

 

 

 

 

0F

 

 

address of

 

 

 

 

 

number of bits

 

CRC 16

 

 

 

 

 

 

 

 

 

 

 

 

 

the first bit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 byte

 

 

1 byte

 

2 bytes

 

 

 

 

 

 

 

2 bytes

2 bytes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 X

1968

 

 

 

 

 

 

 

 

Note: if the slave address is 0, all units execute the write command without sending a response.

Page 12 - 6739389EN/FB

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