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AMETEK SLM Series Rev B User Manual

Page 65

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SLM-Series AC/DC Electronic Load

GPIB/RS-232 Programming Operation

M540072-01 Rev B

4-23

PROTECTION Status Register

Purpose:
OPP, OTP, OVP, and OCP protection status query command.
Command Syntax:
All Modules:

PROT?{NL}

Description:
PROT? returns the present protection status; the status byte register summarizes all of the
protection status events from all status register. The following figure describes the status
byte that occurred on the SLM-Series Electronic load. The PROT status byte register is
cleared when a CLER command clears all of the PROT and ERR status registers.

bit 7

bit 0

7

6

5

4

3

2

1

0

OPP

OTP

OVP

OCP

Figure 4-2 Protection Status Register

ERROR Status register

Purpose:
ERRor status register query command.
Command Syntax:
All Modules:

ERR?{;|NL}

Description:
ERR? returns the present error status; the status byte register summarizes all of the error
status events from all status registers. the following figure describes the status byte the
happened on the SLM-Series electronic load. The ERR status byte register is cleared when
a CLER command clears all of the PROT and ERR status registers.

bit 7

bit 0

7

6

5

4

3

2

1

0

Limited

Range Changed

Invalid Command

Invalid Operating

Figure 4-3 Error Status Byte Register

bit 0:Limited
This bit set to high by Electronic Module Load setting command causing over range.
Reset by CLER command.