7197 Series II Owner’s Guide    Chapter 6:  Commands 
 August 2011 
193
Erase the Flash Memory 
ASCII: 
GS SO 
Hexadecimal: 
1D 0E 
Decimal: 
29 14 
 
Causes the entire Flash Memory (except the boot) to be erased. 
The printer returns ACK if the command is successful; NAK if it is unsuccessful. 
  Example: 
  MSComm1.Output = Chr$(&H1D) & Chr$(&H0E)  
Exceptions: 
Available only in Download Mode. 
Return Main Program Flash CRC 
ASCII: 
GS SI 
Hexadecimal: 
1D 0F 
Decimal: 
29 15 
 
Returns the CRC calculated over the Flash firmware code space. The format of the 
response is ACK <low byte> <high byte>. 
  Example: 
  MSComm1.Output = Chr$(&H1D) & Chr$(&H0F)