Epson Multi-mode Data Controller MFJ-1278B - Manual (Page 123)

MFJ-1278B MULTI-MODE ADVANCED OPERATION
So $1B in hexidecimal notation is equal to 27 in standard decimal notation. Table 5-1
presents a list of ASCII character codes that are available in most computer manuals. A table
of ASCII codes for control characters follows:
Dec Hex Control Mnemonic Dec Hex Control Mnemonic
0 $00 NUL 16 $10 DLE
1 $01 SOH 17 $11 DC1
2 $02 STX 18 $12 DC2
3 $03 ETX 19 $13 DC3
4 $04 EOT 20 $14 DC4
5 $05 ENQ 21 $15 NAK
6 $06 ACK 22 $16 SYN
7 $07 BEL 23 $17 ETB
8 $08 BS 24 $18 CAN
9 $09 HT 25 $19 EM
10 $0A LF 26 $1A SUB
11 $0B VT 27 $1B ESC
12 $0C FF 28 $1C FS
13 $0D CR 29 $1D GS
14 $0E SO 30 $1E RS
15 $0F SI 31 $1F US
127 $7F
Table 5-1. ASCII Codes for Control Characters.
PACKET OPERATING MODES
In Chapter 4 we discussed two of the packet operating modes, Command Mode and
Converse Mode. Packet also can operate in the third mode, Transparent Mode which is a
data-transfer mode like Converse Mode, but is intended primarily for computer data
interchange rather than human conversation. In the following sub-sections we will briefly
describe all three of these modes.
Command Mode
Command Mode is used to enter commands that alter the MFJ-1278B's operating parameters.
All the other MFJ-1278B operating modes are entered from Command Mode. When the
MFJ-1278B is in Command Mode, the Command Mode prompt,
cmd:
is printed at the beginning of each input line. Note, however, that if the MFJ-1278B has