2-2
IM 760151-17E
2.2
Serial Interface Functions and Specifications
Receiving Function
It is possible to make the same settings via the serial interface as can be made using the
front panel keys.
Measured/computed data, panel set-up information and error codes can be received.
Sending Function
Measured/computed data can be output.
Panel set-up information and the status byte can be output.
Error codes which have occurred can be output.
Serial Interface Specifications
Electrical characteristics : Complies with EIA-574 Standard (EIA-232 (RS-232) Standard
for 9 pin)
Connection
: Point-to-point
Communications
: Full-duplex
Synchronization
: Start-stop system
Baud rate
: 1200, 2400, 4800, 9600, 19200
Start bit
: 1 bit (fixed)
Data Length
: 7 or 8 bits
Parity
: Even, odd or no parity
Stop Bit
: 1 or 2 bits
Connector
: DELC-J9PAF-13L6 (JAE or equivalent)
Hardware handshaking : User can select whether CA or CB signals will always be True,
or will be used for control.
Software Handshaking
: User can select whether to control only transmission or both
transmission and reception using X-on and X-off signals.
X-on (ASCII 11H)
X-off (ASCII 13H)
Receive
: 256 bytes
Switching between Remote and Local Modes
When switched from Local to Remote Mode
Remote mode is activated when the “
COMMunicate:REMote ON
” command is
received form a controller while local mode is active.
• REMOTE is displayed on.
• All front panel keys except the LOCAL can no longer be operated any more.
• Settings entered in local mode are retained.
When switched from Remote to Local Mode
Pressing the LOCAL in remote mode puts the instrument in local mode. However,
this is not possible of Local Lockout (when the “
COMMunicate:LOCKout ON
”
command is received) has been set by the controller (page 1-6).
Local mode is activated when the “
COMMunicate:REMote OFF
” command
regardless of Local Lockout.
• The REMOTE indicator is turned off.
• All front panel keys are operative.
• Settings entered in remote mode are retained.