IC-MU_17 Datasheet, PDF (57/66 Pages) IC-Haus GmbH – MAGNETIC OFF-AXIS POSITION ENCODER - POLE WIDTH 1.28MM

iC-MU MAGNETIC OFF-AXIS
POSITION ENCODER - POLE WIDTH 1.28MM
COMMAND REGISTER
Rev D1, Page 57/66
Description of implemented commands
An implemented command is executed depending on the written data value.
CMD_MU(7:0)
Code
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x0A
0x0B
0x0C
0x0D
0x0E
0x0F
0x10
0x11
...0xFF
Note:
Addr. SER: 0x75; bit 7:0
W
Command
Explanation
reserved
no function
WRITE_ALL
Write internal configuration and Offset values to EEPROM
WRITE_OFF
Write internal Offset values to EEPROM
ABS_RESET
Reset of Absolute value (including ABZ-part), takes typ. 10 ms
NON_VER
Verification of actual position by doing a nonius calculation
MT_RESET
New read in and synchronisation of multiturn value
MT_VER
Read in of multiturn and verification of counted multiturn value
SOFT_RESET
startup with read in of EEPROM
SOFT_PRES
Set output to preset
SOFT_E2P_PRES
Set output to preset and save offset values to EEPROM
I2C_COM
start I2C communication
EVENT_COUNT
increment event counter by 1
SWITCH
Writes all configurations parameters without offsets to EEPROM.
MODEA/RPL will be exchanged with MODEA_NEW/RPL_NEW during
write operation
CRC_VER
Verification of CRC16 and CRC8
CRC_CALC
Recalculate internal CRC16 and CRC8 values
SET_MTC
Set MTC-Pin *)
RES_MTC
Reset MTC-Pin *)
reserved
no function
*) MODE_MT=0x00
Table 102: Implemented commands
WRITE_ALL stores the internal configuration and off- newly read-in multiturn data and stored as OFF_POS
set/preset values to the EEPROM. CRC16 and CRC8 and OFF_COM.
are automatically updated.
WRITE_OFF only stores the offset/preset data area to
the EEPROM. CRC8 is automatically updated.
Command ABS_RESET initiates a redefinition of the
absolute value. A new nonius calculation is started. If a
multiturn is configured, this is read in and synchronized.
Offset values OFF_ABZ/OFF_UVW are amended to in-
clude the ST period and MT information and are stored
as OFF_POS and OFF_COM. The ABZ/UVW converter
is restarted.
Attention:
The ABZ/UVW converter is not restarted automati-
cally with the command MT_RESET. If part of the
multiturn data is used for the singleturn information,
ABS_RESET has to be executed additionally.
With command MT_VER an external multiturn is read
in and the counted multiturn value is verified. If there is
a discrepancy, error bit MT_CTR is set in status register
STATUS1.
Command NON_VER initiates a nonius calculation and
the computed value is compared to the current counted
period. If there is a discrepancy, error bit NON_CTR is
set in status register STATUS1.
With command SOFT_RESET internal finite state ma-
chines and counters are reset. The EEPROM is read
in anew. A redefinition of the absolute value is initiated
(see ABS_RESET)
With command MT_RESET an external multiturn is
read in anew and synchronized. Offset values
OFF_ABZ and OFF_UVW are changed to include the
Command SOFT_PRES initiates a preset sequence (cf.
page 61) with preset values PRES_POS. The internal
offset values OFF_ABZ are changed to set the output