Specifications

Operating Manual SEFRAM 4451
M4451 A00
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4.11.3 Synchronization Commands
4.11.3.1 *OPC - Operation Complete Command
The operation complete command causes the device to generate the operation complete message
in the Standard Event Status Register, on completion of the selected device operation.
Command Type: Common Command
Syntax: *OPC
Examples: PULS:PER 1US;*OPC
The *OPC command (and the *OPC? query described below) find use mainly when commands
having relatively long execution times are executed, although all SEFRAM 4451 commands
execute without any appreciable delay.
4.11.3.2 *OPC? - Operation Complete Query
The operation complete query places an ASCII character 1 in the output queue on completion of
the selected device operation.
Command Type: Common Query
Syntax: *OPC?
Response: ASCII character 1
Example: PULS:PER 1US;*OPC?
4.11.3.3 *WAI - Wait-to-Continue Command
This command is intended for use with overlapped commands. No commands in the SEFRAM
4451 are overlapped, and so this command has no effect.
Command Type: Common Command
Syntax *WAI
4.11.4 Status and Event Commands
4.11.4.1 *CLS - Clear Status
The clear status command clears the SESR and Error Queue status data structures.
COMMAND TYPE: Common Command
Syntax:: *CLS
4.11.4.2 *ESE - Standard Event Status Enable
This command is used to set the value of the Standard Event Status Enable Register.
COMMAND TYPE: Common Command or Query
COMMON COMMAND
Syntax: *ESE<ws><NRf>
Arguments:
Type: NRf
Range: 0 to 255. Non integer arguments are rounded before execution.
Examples: *ESE 48 (Enables the CME and EXE bits)
*ESE 255 (Enables all standard events)
QUERY
Syntax: *ESE?
Response: <NR1>
4.11.4.3 *ESR? - Standard Event Status Register Query
This query is used to read the value of the Standard Event Status Register. Reading the register
clears it.