2. Communication Specifications
Communication
system
Item
Specifications
Communication system
RS-232-C, Start-stop synchronization, Semi-duplex communication
Transmission speed
19.2 Kbps
Character length
8 bits/character
Stop bit
2 bits
Parity
None
Transmission format
Variable-length record with terminal as delimiter
Maximum transmission length
Maximum of 256 characters (bytes) including delimiters
Delimiters
Delimiters are one of CR, LF, CR+LF, Null (0) (Delimiters are identified automatically.)
Response delimiters are identical to command delimiters.
Transmission codes
ASCII code (General-purpose characters: 20h to 7Fh), Tab (09h)
(Codes other than those above
and delimiters
are considered “other separator codes”.)
Uppercase and lowercase of alphabetic characters are considered the same character.
Double-byte characters and single-byte characters are not distinguished. All are
considered single-byte characters.
Communication procedure
No procedure
Flow control
None
Error control
None
Break signal
Not supported
Time out
Tc
Character interval: 10 ms
Tr
Command/response interval: 10 s
Connection
Specifications
Item
Specifications
Connection system
PC: “1:1” connection in SX50
Connection signal line
3-line connection of SD, RD, and SG
Connection cable
Dedicated cable
Send data SD
SD Send data
Receive data RD
RD Receive data
Signal ground SG
SG Signal ground
Control
The SX50 has two control modes: LOCAL and REMOTE.
Mode
Most user commands are used in REMOTE mode.
The two modes are set by the REMOTE and LOCAL commands.
REMOTE
LOCAL
• SX50 normal mode
• Except for RC and MAIN, all user commands are
• The available user commands are limited.
available in this mode.
REMOTE, LOCAL, RC, MAIN, GET_MODE
• Except for POWER, all remote control and
only are available
front panel buttons are disabled.
Local
Remote
PC
SX50
専用ｹｰﾌﾞﾙ
COM
PORT
SERVICE
PORT
ＰＣ－ＳＸ５ 接続形態
Canon
PC-SX5 connection status
Dedicated cable