D301087 0308 - BL20 CANopen 4-191
I/O-Module Objects
4
Object 5840
hex
– SSI Diag Mapping
The SSI Diag mapping object writes and reads register 51
(REG_SSI_MASK) of the BL20-1SSI module.
The REG_SSI_MASK contains the SSI encoder diagnostics trans-
ferred.
Some SSI encoders not only transfer the position value in the data
frame that they transfer to the module but also supply additional
status messages. It is advisable to include these status messages in
the application in order to analyze the measured value.
Writing the REG_SSI_MASK register allows up to four individual bits
to be taken from the SSI encoder data frame and transferred to the
SSI_STSx bits of the process input data. It is also possible to output
the "SSI encoder group diagnostics message" with an acyclic diag-
nostics operation when a status message is initiated.
Table 124:
Objects 5840
hex
Feature Description
Name SSI Diag mapping
Object code ARRAY
Data type Unsigned32
Access rw
Default value No
PDO-mapping No
Process input
data
REG_SSI_MASK
ByteBit 7 Bit 6 B 5 B 4B 3B 2B 1B 0
SSI_STS0
0 EN_ D0_RMS0 EN_D0_DS X SSI_FRAME_BIT_SEL0
SSI_STS1
1 EN_ D1_RMS1 EN_D1_DS X SSI_FRAME_BIT_SEL1
SSI_STS2
2 EN_ D2_RMS2 EN_D2_DS X SSI_FRAME_BIT_SEL2
SSI_STS3
3 EN_ D3_RMS3 EN_D3_DS X SSI_FRAME_BIT_SEL3
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