APC MGETM GALAXYTM 6000 User Manual download pdf (Page 28)

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System information

Message format

This section describes the

messages exchanged between the

"GTC link" communication interface

and the external computer based

on the JBUS protocol.

The length of time after which a

message must be interpreted as

"not understood" depends on the

type of command sent.

The table opposite lists maximum

response times:

Data rate 1200 Baud 2400 Baud 4800 Baud 9600 Baud

status information only 0,5 s 0,25 s 0,12 s 0,06 s

all measurements 2 s 1 s 0,5 s 0,25 s

Response time of event (independent of data rate)

- inverter start-up and connect : 30 s

- rectifier-charger startup : 30 s

- rectifier-charger or inverter stop : 30 s

For the "responses", refer to the

"JBUS protocol" section function 1

and 3.

Example of read data array commands sent by the terminal

(address: 20H)

request station function data length CRC 16

code address

read voltage 20 03 0140 0015 82 9C

array

(21 values)

read current 20 03 0100 000F 28 03

array

(15 values)

read global 20 01 04C0 000B 7A 70

state bits

(11 bits)

command station function bit data not CRC 16

code address used

charger on 20 05 0C00 FF 00 89 DB

charger off 20 05 0C01 FF 00 D8 1B

inverter on 20 05 0C04 FF 00 C8 1A

inverter off 20 05 0C05 FF 00 99 DA

Sample commands

List of variable fields

(same for all cubicle types)

The binary data and binary

commands can be accessed bit or

word-wise.

The word address and position of

the bit in the word can be

determined from the bit address:

◗ hundreds and tens digit of bit

address = word address;

◗ least significant digit of bit

address = bit position.

JBUS fields address in hexadecimal access

start end

signaling 0 5 read / write

signaling 6 F read

binary data 40 BF read

commands C0 DF read / write

counters E0 FF read

currents 100 13 read

voltages 140 17 read

powers 180 19F read

frequencies 1A0 1BF read

battery 1C0 1DF read

adjustments 200 2FF read

maintenance 300 3FF read

1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 37 38

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APC MGETM GALAXYTM 6000 User Manual Page 28

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