ACR&Artex Float-Free 406 Memory Capsule - Manual (Page 16)

12 Y1-03-0202 Rev. E
Bytes 0 – 6, 10, and 11 are part of the command string sent by the
user to the RLB-35MC Memory Board. Bytes 7 – 9 and 12 – 14 are
returned by the RLB-35MC Memory Board with the echoed command
string in response to a ‘Test’ command (‘E’ command and ‘0’
subcommand); only bytes 12 and 13 are returned with the command
string in response to a ‘Status’ command (‘S’ command).
6.2. Header
The first four (4) bytes are a fixed value header with hexadecimal
values of AC, 53, CA, 35.
6.3. Operation Command
Byte 4 is the Operation Command and is in ACSII format:
ASCII
Character
Hex
Value
Command
R 0x52
If main memory, read the read offset specified number MB of data, else
read & return all the data from the specified memory partition.
W 0x57 Write into the specified memory partition
D 0x44
Read all of main memory starting at the specified read offset from the
current write address and ending at the address just before the stating
address
P 0x50
Read main memory from the partition’s beginning address to the current
write address
F 0x46
Read all of main memory starting at the partition’s beginning address to
the ending address
S 0x53 Request the memory board status
E 0x45 Request the memory board status, CFC size, & software version
6.4. Operation Subcommand
Byte 5 is the Operation Subcommand, and is in ASCII format. It
defines which partition of memory each read or write command will
operate on.
ASCII
Character
Hex
Value
Definition
0 0x30 Test status request
1 0x31 Main memory partition
2 0x32 Configuration memory partition
3 0x33 Status memory partition