Chroma 6404 - Page 47

Remote Operation
6-11
Parameters: None
Example: SYST:LOC sets the ac source to local state.
SYSTem:REMote
Description: Sets the ac source to remote state, which disables the front panel controls
except the local key. Pressing the local key while in the remote state returns
the ac source to the local state. This command can only be used with the RS-
232 interface.
Syntax: SYSTem:REMote
Parameters: None
Example: SYST:REM sets the ac source to remote state.
SYSTem:RWLock
Description: Sets the ac source to remote-lockout state, which disables the front panel
controls including the local key. This command can only be used with the RS-
232 interface.
Syntax: SYSTem:RWLock
Parameters: None
Example: SYST:RWL sets the ac source to remote-lockout state.
*CLS, Clear Status Command
Description: This command clears all Event registers summarized in the status byte
(Standard Event status register, Questionable Status Event register), and
clears the error queue. If the *CLS command immediately follows a program
message terminator, the output queue and the MAV bit are also cleared.
Syntax: *CLS
Parameters: None
*ESE, Standard Event Status Enable Command
Description: This command sets the enable mask which allows true conditions in the
Standard Event Status register (ESR) to be reported in the Event Summary Bit
(ESB) of the Status Byte register. If a bit is 1 in the Standard Event Status
Enable register (ESE) and its associated event bit transitions to true, the ESB
of the Status Byte register (STB) is then set true. The bit configuration of ESE
is the same as the ESR (see *ESR).
Syntax: *ESE <NRf>
Parameters: 0 to 255
Example: *ESE 48 enables the CME and EXE events of ESR
Query Syntax: *ESE?
Return Parameters: <NR1>
Query Example: *ESE? returns the content of ESE.
*ESR?, STANDARD EVENT STATUS REGISTER QUERY
Description: This query returns the content of the Standard Event Status Register (ESR)
and then clears it.
Bit configuration of Standard Event Status Register
Bit position
7
6
5
4
3
2
1
0
Condition
PON
---
CME
EXE
DDE
QYE
---
OPC
Bit Weight
128
32
16
8
4
2
1
Remark: PON: Power on QYE: Query error
CME: Command error EXE: Execution error
DDE: Device-dependent error OPC: Operation complete