Toshiba ETH-100 User Manual

 

  

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•  Because write transactions targeting internally-defined points (refer to 

section 12.3.1) are handled locally within the ETH-100, data range 
checking is not available.  For example, if a write to a point is performed, 
and the write data is out-of-range of the corresponding ASD register, no 
exception will be immediately returned.  However, the point will always 
reflect the ASD register’s value.  In other words, if such an out-of-range 
write is performed, the unsuccessful ASD write can be observed by 
reading the current (unchanged) value of the register during a subsequent 
transaction. 

 
•  For those drive families (such as the S7 and S9) which do not have an 

explicit FREQUENCY MODE SELECTION or COMMAND MODE 
SELECTION parameter setting corresponding to the common serial 
channel, remember that bits #14 and #15 of the communication command 
register (drive register 0xFA00) must be set to enable network frequency 
and network commands, respectively. 

 
•  All register writes use the drive’s RAM / EEPROM data write (“W”) 

command.  For all writes that target the drive’s EEPROM, be sure to follow 
Toshiba’s guidelines regarding the number of times a specific parameter 
can be written without risk of EEPROM damage.