Table 2.2: Send Only and Clear Buffer Control Characters
Ports to Transmit or | Binary Value | Decimal |
Clear Receive Buffer | (x = Don’t Care) | Value |
None | xxxx0000 | 0 or 64 |
A Only | xxxx0001 | 1 or 65 |
B Only | xxxx0010 | 2 or 66 |
A & B | xxxx0011 | 3 or 67 |
C Only | xxxx0100 | 4 or 68 |
A & C | xxxx0101 | 5 or 69 |
B & C | xxxx0110 | 6 or 70 |
A, B, & C | xxxx0111 | 7 or 71 |
D Only | xxxx1000 | 8 or 72 |
A & D | xxxx1001 | 9 or 73 |
B & D | xxxx1010 | 10 or 74 |
A, B, & D | xxxx1011 | 11 or 75 |
C & D | xxxx1100 | 12 or 76 |
A, C, & D | xxxx1101 | 13 or 77 |
B, C, & D | xxxx1110 | 14 or 78 |
A, B, C, & D | xxxx1111 | 15 or 79 |
ASCII
Character
“@”
“A”
“B”
“C”
“D”
“E”
“F”
“G”
“H”
“I”
“J”
“K”
“L”
“M”
“N”
“O”
Note: The 232BSS4 ignores the upper 4 bits of the control byte. If the Master device is incapable of sending characters outside the printable ASCII range, decimal 64 can be added to each of the control bytes and the switch will operate properly.
Ignore Commands – “T” + one control byte specifying the length of time to ignore commands.
The Ignore Commands command tells the 232BSS4 to ignore all commands from the Master device for a specific amount of time. This command is useful if the data coming from the Master device may contain switching commands. By switching to a port, then sending the Ignore Commands command, all data received on the Master port of the 232BSS4 will be passed directly to the selected Slave port without checking for a command sequence until the programmed time has elapsed. The control byte at the end of the command tells the 232BSS4 how long to ignore commands from the Master device. This byte is ASCII “0” – “9” (48 – 57 Decimal). Timer values for each Control byte are given in Table 2.3.
Documentation Number | 11 |
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