TDK Lambda | Z+Low Voltage User Manual

9.2 Power Supply Status Structure Status and Fault Register shows the status register structure of the power supply. The Standard Event, Status Byte, and Service Request Enable registers and the Output Queue perform standard functions as defined in the IEEE 488.2 StandardDigital Interface for Programmable Instrumentation. The Operation Status and Questionable Status registers implement status functions specific to the power supply. 9.3 Condition Registers There are two registers that the user may read to see the condition of the supply. The register bits are set to show a fault or if an operating mode is active. The bits are cleared when the fault or mode is cleared. The registers are read-only. 9.3.1 Fault Register The fault register sets a bit when a Fault occurs (Refer to table 9-1). The bit is cleared when the fault condition is removed.

Bit Number

Decimal Value

Bit Symbol

Description

0 1 2 3 4 5 6 7 8 9

1 2 4 8

AC

AC Fail

OTP FLD OVP OFF INT UVP SO

Over Temperature Fold Back Protection Over Voltage Protection

16 32 64

Shut Off

Output Off

128 256 512

Interlock

Under Voltage Protection

0

Not used

10 11 12 13

1024 2048 4096 8192

INPO INTO ITMO ICOM

Internal Input Overflow * Internal Overflow * Internal Time Out * Internal Comm Error *

14 to 15

N/A

0

Not used

Table 9-1: Bit Configuration of Questionable Registers

126