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HBC-series V7 LV+MV
Control by data transfer / data communication
When controlling is realized by data transfer or you need communicate with other equipment, following possibilities can be choice:
- standard line
RS 232
or bus
RS 485
or
CAN
(also optically insulated
– see specification)
- or
RS 232
line with
TTL
level (advantage fr direct communication
processor
–
processor
). Controller cooperates with 3.3V systems, as well
as with 5V systems. In this case line is defined like this:
RS 232 TTL:
Controller sends data with 3.3V level.
Controller receives correctly data from control system with 3.3V level, as well as 5.0V level.
RS-485 / CAN:
Both the physical end of the bus (both, RS 485 and the CAN) must be terminated with a nominal terminating impedance (resistor 120
Ω).
It means that topologically the first and last device connected to the bus must have this resistor. The controller is obtained by connecting the
jumper
J1
. Other devices on the bus (excluding terminal equipment) should not contain the terminating impedance. Thus, if the regulator is not
on one of the end positions, jumper
J1
must be disconnected.
S
ta
rt
bi
t
S
top
bi
t
(1
o
r
2
)
Data bits
S
ta
rt
b
it
0 up to 0.8V
(log. 0)
+2.4 up to +3.3V (5.0V)
Quiescent state
(log. 1)
frame 1 byte
GND
GND
+3.3V
Data sending with level
3.3
V
Data sending with level
3.3
V or 5V
Controller HSBC- series
Control system
Data receiving from
control system
Data receiving from HBC controller
100 Ω
100 Ω
(3.3V or 5.0V logic)
Line A / CAN L
Line B / CAN H
■ ■ ■ ■
GND
GND
HSBC-series
Another equipment
J1
120 Ω
Termination
resistor
to
bu
s
dri
v
e
r
J1
120 Ω
J1
12
0
Ω
J1
12
0
Ω
to
bu
s
dri
v
e
r
to bus driver
to bus driver
Display, master unit, etc.
Another equipment
RS 485 or CAN bus
Termination
resistor
T
er
m
inat
ion
res
is
tor
Another equipment
T
er
m
inat
ion
res
is
tor
RxD
TxD
RxD
3.3V or 5V
3.3V
