Nidec SI-Interbus 2 MBd, User Manual

Page: 43 / 90

SI-INTERBUS User Guide
43
Issue Number: 1
Sa
fety
in
fo
rm
at
io
n
Introd
uc
tion
Sup
por
ted
fe
atur
es
Mec
hani
ca
l
in
st
al
la
tion
El
ec
tric
al
in
st
al
la
tion
G
etti
ng
st
a
rte
d
A
ddit
ion
al
featur
es
Non
-Cyc
lic
da
ta
Vi
rtu
al
m
enus
S
I-A
pp
lic
ati
ons
pa
ra
m
e
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rs
Contr
ol /
sta
tus
wor
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Di
agn
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S
ing
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etup
pa
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de
sc
ript
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F
ull
p
ar
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des
cr
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CM
D tool
supp
ort fil
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Glo
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Telegram 3
The third telegram from the Interbus master controller has the stamp number set to 3.
The data bits contain the high data byte for the parameter being written to.
Request
Data word = 0x1300
Stamp Number = 3
Data byte = 0x00 = 0
When the third telegram has been received and processed in the slave node, the slave
will mirror the stamp number in the non-cyclic IN word and load the high byte of the
parameter value into the data byte to be transmitted back to the Interbus master
controller. This is the signal to the master controller program that the third telegram of
the message has been received and understood, the fourth telegram can now be
transmitted.
Response
Data word = 0x1300
Stamp Number = 3
Data byte = 0x00 = 0
Telegram 4
The fourth telegram from the Interbus master controller has the stamp number set to 4
and contains the mid-high data byte (or low data byte for 16-bit parameters) for the
parameter being written to.
Request
Data word = 0x1401
Stamp Number = 4
Data byte = 0x01 = 1
When the fourth telegram has been received and processed in the slave node, the slave
will mirror the stamp number in the non-cyclic IN word and load the mid-high byte
(or low byte for 16-bit parameters) of the parameter value into the data byte to be
transmitted back to the Interbus master controller. This is the signal to the master
controller program that the fourth telegram of the message has been received and
understood. For 32-bit parameters this informs the Interbus master controller the fifth
telegram can now be transmitted, but for 16-bit parameters the internal non-cyclic state
machine should be reset.
Response
Data word = 0x1401
Stamp Number = 4
Data byte = 0x01 = 1
Bit b15 to b12 b11 to b8 b7 to b4 b3 to b0
Value 0001 0011 0000 0000
Bit b15 to b12 b11 to b8 b7 to b4 b3 to b0
Value 0001 0011 0000 0000
Bit b15 to b12 b11 to b8 b7 to b4 b3 to b0
Value 0001 0100 0000 0001
Bit b15 to b12 b11 to b8 b7 to b4 b3 to b0
Value 0001 0100 0000 0001