Standard Data Format; Command List; When The Command Is Received; Normally - Ulvac G-TRAN Series Instruction Manual

Standard data format

The following is the standard data format for sending and receiving.
: AD0 AD1
: Colon
AD0 Device address, higher(0～3)
AD1 Device address, lower (0～9)
CMD Commands (upper/lower case-sensitive)
D0 Data
Dn Data
SH Higher bits of status(state)
SL Lower bits of status(state)
CHKH Higher bits of checksum (0～9, A～F)
CHKL Lower bits of checksum (0～9, A～F)
CR Carriage return

Commands consist of alphanumeric uppercase and lowercase characters.
 The checksum is the exclusive OR sum (XOR) from AD0 to SL. All characters must
be converted by the hexadecimal notation of ASCII code.

Command List

Command
Read measurement value and status
D
T Model and software version
SAU/SWU Atmospheric Pressure
ATM
Adjustment
SAU/SWU Zero Point Adjustment
ZER
CLR Initialize SAU/SWU atmospheric
pressure and zero point adjustment
SR Read status
SW Write status
Check error contents
ERR
FIL Check Filament power monitoring
value
1R Read Setpoint1 value
1W Write Setpoint1 value
When the command is received normally
When the command is received normally, the return is as follows:
When returning the pressure value.
： AD0 AD1
When writing the setpoint or adjusting.
: AD0 AD1

'o' is lowercase.
When the command is not received normally
When an operation instructed by the command is not performed, a command is not received
normally, or there is no command, the return is as follows:
: AD0 AD1

'n' is lowercase.
CMD D0 ･･････ Dn
Description
D X . X
o CHKH CHKL CR
n CHKH CHKL CR
SH SL
Command
Read Setpoint2 value
2R
2W Write Setpoint2 value
Read Mode setting
MDR
Write Mode setting
MDW
4AR Read Address setting
4AW Write Address setting
4BR Read communication speed
Write communication speed
4BW
CSN Enable checksum confirmation
CSF Disable checksum confirmation
CS Checksum confirmation status read
X E ± X X
38
CHKH CHKL CR
Description
SH SL CHKH CHKL CR