| Operation | |
| Command Reference | |
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Command | Description |
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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 | |
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DLY? | Asks for the setting of the programmable time delay before the supply | |
| reports fault conditions. | |
| Response: DLY <seconds> | |
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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 53. | |
| Response: ERR <error number> Example: ERR 0 (if no error) |
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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 | |
| signal line. You can tie the | |
| External Shutdown user line, | |
| (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 | |
| 51. |
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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 |
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Release 3.1 | 45 |