| 
 | Operation | |
| 
 | Command Reference | |
| 
 | 
 | 
 | 
| Command | Description | 
 | 
| DLY <seconds> | Sets a programmable time delay employed by the supply before reporting | |
| 
 | fault conditions. The power supply uses the time delay after receiving a new | |
| 
 | output voltage or current setting via VSET or ISET, or after receiving RST, | |
| 
 | TRG, or OUT ON commands. During the time delay, the power supply | |
| 
 | disables CV, CC, and FOLD conditions from generating faults, preventing | |
| 
 | possible nuisance foldback if the supply momentarily switches modes while | |
| 
 | changing an output setting. | |
| 
 | Range: 0 to 32 seconds, with 32ms resolution | |
| 
 | Initial value: 0.5 second | |
| 
 | 
 | 
 | 
| DLY? | Asks for the setting of the programmable time delay before the supply | |
| 
 | reports fault conditions. | |
| 
 | Response: DLY <seconds> | |
| 
 | 
 | 
 | 
| ERR? | Asks for the most recent remote programming error. When the power | |
| 
 | supply detects a programming error, it lights the ERR LED and sets the | |
| 
 | ERR bit in the accumulated status and fault registers. If the error bit has | |
| 
 | been masked using the MASK command, then the ERR bit in the registers | |
| 
 | will not set. Once an error is detected, the remaining portion of the | |
| 
 | command line is discarded. An error query clears the ERR bit in the | |
| 
 | accumulated status register. See “Error Codes” on page 49. | |
| 
 | Response: ERR <error number> Example: ERR 0 (if no error) | 
 | 
| FAULT? | Asks for the state of the fault register. A bit is set in the fault register when a | |
| 
 | fault arises for that condition. Lists the conditions which activate a fault bit. | |
| 
 | You can use the MASK command to disable bits from being set in the fault | |
| 
 | register. | |
| 
 | When a bit is set in the fault register it also asserts a signal on the  | |
| 
 | user signal line. You can tie the  | |
| 
 | own External Shutdown user line,  | |
| 
 | low (active) in the case of a  | |
| 
 | The FAULT? query clears bits in the supply's fault register and fault line. | |
| 
 | Response: FAULT <fault mask> where fault mask is the decimal equivalent | |
| 
 | of the total bit weights for the operating conditions as listed in the fault | |
| 
 | register. See “Accumulated Status, Status, and Fault Registers” on page | |
| 
 | 47. | 
 | 
| FOLD | Sets foldback mode for the supply. Foldback protection disables the power | |
| <2/CC>, <1/CV>, | supply output when the output enters the fold condition. Reset with the RST | |
| <0/OFF> | command. | |
| 
 | Example: Specify FOLD 1 or FOLD CV (Constant Voltage) when you want | |
| 
 | the supply to operate in Constant Current mode and have foldback | |
| 
 | protection disable the output if the supply switches to Constant Voltage | |
| 
 | mode. | |
| 
 | Initial value: FOLD 0/OFF | 
 | 
| Release 1.2 | 41 | 
