IC-MU150 Datasheet, PDF (57/64 Pages) IC-Haus GmbH – MAGNETIC OFF-AXIS POSITION ENCODER - POLE WIDTH 1.50MM

iC-MU150 MAGNETIC OFF-AXIS
POSITION ENCODER - POLE WIDTH 1.50MM
in anew. A redefinition of the absolute value is initiated
(see ABS_RESET)
Command SOFT_PRES initiates a preset sequence (cf.
page 60) with preset values PRES_POS. The internal
offset values OFF_ABZ are changed to set the output
value to the value given by PRES_POS. The internal
CRC8 is automatically updated.
Rev B1, Page 57/64
I2C_DEVID(7:0) Addr. SER:0x5E; bit 7:0
Code
Meaning
0xA0
write EEPROM
0xA1
read EEPROM
0xC0
write to iC-PVL (status/commands)
0xC1
read from iC-PVL (status/commands)
Table 107: Examples of I2C Device IDs
Command SOFT_E2P_PRES initiates a preset se-
quence (cf. page 60) with preset values PRES_POS.
The altered offset values OFF_ABZ are stored in the
EEPROM. CRC8 is automatically updated.
Command I2C_COM initiates communication with a
I2C device (RPL=0x00 and 0x02). Prior to this the
following parameters must be configured:
• I2C_DEVID
• I2C_RAM_START
I2C_RAM_START Addr. SER: 0x5C; bit 7:0
Code
Description
0x00
...
I2C-RAM start address
0xFF
Table 108: I2C-RAM start address
I2C_RAM_END Addr. SER: 0x5D; bit 7:0
Code
Description
0x00
...
I2C-RAM end address
0xFF
• I2C_RAM_END
Table 109: I2C-RAM end address
• I2C_DEV_START
The device ID is written to I2C_DEVID (see Table 107).
If an error occurs while communicating with an external
I2C device up to 3 new communication attempts are
started by iC-MU150.
I2C_DEV_START
Code
0x00
...
0xFF
Addr. SER: 0x5B; bit 7:0
Description
I2C device start address
Table 110: I2C device start address
I2C_RAM_START defines the start address in the inter- _{With command EVENT_COUNT the value of register}
nal RAM which in case of a
EVENT_COUNT is incremented by 1.
• write access: marks the begin of the data area
that holds the data to be written
• read access: marks the begin of the data area
where the data read from the I2C device is written
to
EVENT_COUNT(7:0)
Addr. SER:0x73; bit 7:0
Code
Description
0x0
...
Event counter
0xFF
Table 111: Event counter
According to this I2C_RAM_END defines the end ad-
dress of the data area in the internal RAM. The num-
ber of bytes NUM_BYTES to be read/written are deter-
mined by the difference between I2C_RAM_END and
I2C_RAM_START.
I2C_DEV_START defines the start address of the I2C
device from which NUM_BYTES bytes should be read-
/written.
The USER_EXCHANGE_REGISTERS (see Table 95)
can be used for the data-exchange with the I2C device.
The command SWITCH makes it possible to write
configurations of MODEA and RPL into the EEP-
ROM which inhibit further register communications (e.g.
MODEA=ABZ).
Note: RPL must be set to 0x0 before starting the
command.
MODEA_NEW and RPL_NEW are used to set the tar-
get configuration of MODEA and RPL (e.g. ABZ, no
RPL). On executing the command SWITCH MODEA
and RPL are set to the target values and the config-