Theory of Operation
21
4.6
AS-i Modes
AS-i has 2 operating modes, Configuration and Protected. Normally, the
system is in Protected mode. You enter Configuration mode only if you are
configuring via the serial port. The following sections describe each mode.
4.6.1 Configuration Mode
You can:
•
change slave addresses
•
save to EEPROM
You cannot:
• perform
data
exchange
•
use Auto Address Programming
All slaves are active regardless of the LPS. In other words, the LDS and the
LAS are the same. Refer to section 4.5 for more information on LPS, LDS
and LAS.
4.6.2 Protected Mode
You can:
• exchange
data
•
use Auto Address Programming (if enabled)
You cannot:
• write
to
EEPROM
•
enter protected mode with slave 0 (zero) present
•
change slave addresses
Only slaves which are present in the EEPROM (LPS) and match the ID and
I/O codes in the LPS are activated.
Summary of Contents for SST-ASI-SLC
Page 6: ...SST ASI SLC User s Guide vi Conformance Statement 63 CE Notice 67 C D...
Page 13: ...7 This chapter contains a system overview information on hardware features 2 Overview...
Page 20: ...SST ASI SLC User s Guide 14...
Page 30: ...SST ASI SLC User s Guide 24 IOM Ladder Logic Instruction...
Page 44: ...SST ASI SLC User s Guide 38...
Page 66: ...SST ASI SLC User s Guide 60...
Page 72: ...SST ASI SLC User s Guide 66...
Page 74: ...SST ASI SLC User s Guide 68...
