Serial (Rs-232) Interface Functions And Specifications - YOKOGAWA VB8300 User Manual

1.2 Serial (RS-232) Interface Functions and Specifications

1.2 Serial (RS-232) Interface Functions and Specifications
Reception Function
Transmission Function
Serial (RS-232) Interface Specifications
Switching between Remote and Local Mode
1-2
You can specify the same settings as those specified by front panel key operations.
Receives output requests for setup data and error codes.
Able to output setup data and the status byte.
Outputs error codes that have occurred.
Electrical characteristics:
Connection:
Transmission mode:
Synchronization:
Baud rate:
Start bit:
Data length:
Parity:
Stop bits:
Connector:
Flow control:
control
When Switching from Local to Remote Mode
The VB8300 switches to remote mode (SYSTem:KEYLock ON is also enabled) when it
receives a :COMMunicate:REMote ON command from a PC in local mode.
• All keys except SHIFT+KEYLOCK are disabled.
• Settings entered in local mode are retained even when the VB8300 switches to
remote mode.
When Switching from Remote to Local Mode
Pressing the SHIFT+KEYLOCK key when the VB8300 is in remote mode causes the
VB8300 to switch to local mode. However, this is void when the VB8300 has received a
":COMMunicate:LOCKout ON" command from the PC (local lockout condition). VB8300
also switches to local mode when it receives a :COMMunicate:REMote OFF command
for the PC. However, if local lockout is enabled, an error occurs and the switch to local
mode is not possible.
• Key operations are enabled.
• Settings entered in remote mode are retained even when the VB8300 switches to
local mode.
Conforms to EIA-574 (9-pin EIA-232 (RS-232))
Point-to-point
Full-duplex
Start-stop synchronization
9600, 19200, 38400, 57600, or 115200
Fixed to 1 bit
7 or 8 bits
Even, odd, or no parity
1 or 2 bits
D-sub 9 pin
Select hardware handshaking using RS/CS or no flow
IM 703155-17E