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PDF BV4503 Data sheet ( Hoja de datos )

Número de pieza BV4503
Descripción IASI2-Digital Switch
Fabricantes ByVac 
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No Preview Available ! BV4503 Hoja de datos, Descripción, Manual

ByVac
IASI2-Digital Switch
Product Specification
BV4503
BV4503
IASI2-Digital Switch
Product specification
December 2008 V0.a
©ByVac
Page 1 of 13

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BV4503 pdf
ByVac
IASI2-Digital Switch
As an example the BV4503/4 is used to drive
2 x 12V lamps. The 12V supply goes to the
lamps and also to the C+ pin. Setting the
power level on D0 and D1 to anything but 0
will begin to illuminate the lamps.
The PWM has a time base of 87uS. The scope
trace shows one port at power level 1. Each
pulse will be approximately 1/8 of the time
base and hence a power level of 3 would show
a negative pulse lasting approximately 33uS.
Each port works independently of the next and
so D0 could have a power level of 1 and D1
could have a power level of say 5.
5. Factory Reset
As the IASI address is stored in EEPROM and
is fully configurable, it is possible that the user
may forget what the address is. To restore
factory defaults do the following:
1) remove power
2) Connect the square hole marked FR
to the hole next to it, this will in fact
connect the square hole to +V
3) Apply power
4) Remove power
The address and any other parameters that
may be stored in the first half of the EEPROM
will now be reset.
Product Specification
BV4503
In general the first 16 bytes of EEPROM are
normally reserved for system use but these
areas can still be overwritten by the user.
In general the first 16 bytes of EEPROM are
normally reserved for system use but these
areas can still be overwritten by the user.
6. IASI2 Command set
NOTE there are two distinct command sets.
The system command set, commands
normally using upper case and the device
command set. The communication command
set is described in the introduction to IASI-2
(Intelligent Asynchronous Serial Interface)
section 7.
** Commands are case sensitive **
Device default address is ‘b’
Command Device Command Set
a Set power level for D0
b Set power level for D1
c Set power level for D2
d Set power level for D3
e Set power level for D4
f Set power level for D5
g Set power level for D6
h Set power level for D7
w Set byte
Table 1 Device Command Set
Table 1 is a command summary of all of the
device specific commands. Note that these are
all in lower case as the IASI2 Protocol is case
sensitive.
6.1. Command ‘a’
Name: Sets the power level for D0
Command Parameters: 0 to 8
Typical use ba3
Sets the power level for D0, a power level of 0
will set the input to the Darlington switch to
high, turning it off. A power level of 8 will set
the input to the Darlington switch low turning
it fully on.
A value in-between 0 and 8 will vary the
on/off ratio at the PWN time base frequency.
6.2. Command ‘b’ to ‘h’
Name: Sets the power level for D1 to D7
Command Parameters: 0 to 8
Typical use bf3
As command 1 but for the other output ports.
©ByVac
Page 5 of 13

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BV4503 arduino
ByVac
IASI2-Digital Switch
Product Specification
BV4503
This command is similar to Command 4 except
this acts on a device individually whereas
command 4 will set all of the devices on the
same bus to non-inverted.
17.12.
P
Name: Print contents of EEPROM
Command Parameters: <start address>
Typical use aP10
This will take the contents of the EEPROM at the
given starting address and output the data to Tx
(pin 2) as raw data (bytes) unlike the G
command that will output the data as text
numbers.
The command will stop outputting either when it
reaches a value of 0 in the EEPROM or when the
end of the EEPROM (255) is reached.
This command is the opposite of the B command,
the B command will write text to the EEPROM
and this command will read and output it.
The start address of the message location within
the EEPROM needs to be specified, e.g. aPA0.
17.13.
R
Name: Reset
Command Parameters: none
Typical Use aR
Resets and individual device. The baud rate will
need establishing again after this command is
used.
This is similar to command 3 but works on a
single device.
17.14.
V
Name: Version information
Command Parameters: none
Typical Use aV
This simply returns a sting that contains the
firmware and device version information.
17.15.
T
Name: Test macro
Command Parameters: none
Typical Use aT
Runs the macro. This is created by the Z
command. It is wise to test macros with this
command before using the M command.
17.16.
Z
Name: Create macro
Command Parameters: see text
Typical Use aZac1;at’Fred’
A macro is created at 0xB0 in the EEPROM space
and so if it is used, it is up to the user not to
write over it. The whole macro must be specified
on one line (maximum number of bytes 63) and
';' (semicolon) are used to separate commands,
they are interpreted as EOL when the macro is
running. Example
aZaN;aV;aP10;
The above example will change the mode to
inverted, print out the version number and print
a message stored in the EEPROM at address
0x10. Note that the macro also finishes with a
';' .
18. Error Codes
Error codes will be displayed if the debug level
(ZD) is set to greater than 0.
Code Description
2 Unknown command, the command
issued is not in the command table for
this device.
3 Bad device address, the address
specified is outside the address range.
4 Bad number usually caused by
specifying a hex number (say D0)
when a decimal number is required.
5 No terminating quote, for example:
aB10 ‘Hello
would give this error.
6 Command locked, the command used
should be unlocked with the U
command before using.
19. Connecting and Configuration
Figure 2 Connection wiring
The above wiring diagram shows the
connections to a standard PC 9 way com port
(RS232 connector). Pin 1 of the IASI-2 has no
connection as this is used to connect to a
microcontroller UART.
©ByVac
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