PLZ-5W Series Electronic Load

Commnunication Interface Mannual


QUEStionable status register

The QUEStionable status register is a 16-bit register that stores information related to the PLZ-5W’s status and the questionable events that occur during PLZ-5W operation.

The QUEStionable status register bits may indicate that there are problems with the PLZ-5W's measured data.

Bit Bit weight Bit name Description
0 1 OV(Over Voltage Protection) Overvoltage protection activated
1 2 OC(Over Current Protection) Overcurrent protection activated
2 4 NOT USED Not used
3 8 OP(Over Power protection) Overpower protection activated
4 16 OT(Over Temperature Protection) Overheat protection activated
5 32 WDOG(Watchdog protection) Watchdog protection activated
6 64 CL Current limiting in progress
7 128 PL Power limiting in progress
8 256 NOT USED Not used
9 512 UV(Under Voltage Protection) Undervoltage protection activated
10 1024 EXT External error occurred
11 2048 REV Reverse voltage detected
12 4096 FORM Connection error occurred
13 8192 NOT USED Not used
14 16384 NOT USED Not used
15 32768 NOT USED Always zero


Related information

Status subsystem



Overview of Command

Command (function search)

Command (ABC search)

Command (Sub-system search)




Electronic Load  PLZ-5W seriesElectronic Load PLZ-5W series
Communication Interface Manual