MGE UPS Systems SineWave JBUS Manuel D'installation Et D'utilisation page 42

JBUS protocol
function 6: writing a word
function 16: writing n
consecutive words
12
(cont.)
request
slave address
1 byte
response
slave address
the response is echoed acknowledging that the word sent has been received.
request
slave address
1 byte
MSB LSB MSB LSB MSB
first word
response
slave address
1 byte
note: if the slave address is 0, all units execute the write command without
sending a response.
example
writing words 00 and 01 of slave at address 20 (synchronization counter)
(00) = 0000
(01) = 0000
request
10
20 0000 0002 04
(*)
response
10
20 0000 0002 47 79
(*)
(*) 10 H = 16 D
SineWave™ JBUS communication system installation: E-51027160XT/AC
6 word address
1 byte 2 bytes
6 word address
address of number number
10
(*) first word of words of bytes N
1 byte 2 bytes 2 bytes
2 ≤ X ≤ 123
4 ≤ N ≤ 246
10
address of
(*) first word
1 byte 2 bytes
0000 0000 0000 0000 5C 93
word CRC 16
2 bytes 2 bytes
CRC 16
word
data bytes
CRC 16
1 byte N bytes 2 bytes
MSB LSB
last word
number of
CRC 16
words written
2 bytes 2 bytes
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