Questionable Status - Chroma 63200 Series Operation & Programming Manual

High Power DC Electronic Load 63200 Series Operation & Programming Manual
OC 0
OV 1
OP 2
RV 3
OT 4
N.U. 5-15
STANDARD EVENT STATUS
EVENT
OPC 0
N.U. 1
QYE 2
DDE 3
EXE 4
CME 5
6
N.U.
7
N.U.
8.3

Questionable Status

The Questionable Status registers inform you one or more questionable status conditions,
■
which indicate certain errors or faults have occurred. Table 8-1 lists the questionable
status conditions that are applied to the electronic load.
When the corresponding bit of Questionable Status Condition register is set, it indicates
■
the condition is true.
Program the PTR/NTR filter to select the way of condition transition in the Questionable
■
Status Condition register will be set in the Event registers.
Reading of the Questionable Status Event register will reset it to zero.
■
The Questionable status Enable register can be programmed to specify the questionable
status event bit that is logically ORed to become Bit 3 (QUES bit) in the Status Byte
register.
Mnemonic Bit Value
0
OC
OV 1
8-2
QUESTIONABLE STATUS
CONDITION PTR/NTR EVENT
1
1 1
2
2 2
4 4
4
8
8 8
16 16
16
ENABLE
1 1
4 4
8 8
16 16
32 32
Figure 8-1 The Status Registers of Electronic Load
Over current. When an over current condition has occurred on a
1 channel, Bit 0 is set and remains set until the over current
condition is removed and LOAD:PROT:CLE is programmed.
Over voltage. When an over voltage condition has occurred on a
2 channel, Bit 1 is set and remains set until the over voltage
condition is removed and LOAD:PROT:CLE is programmed.
ENABLE
1
2
4
8
16
OUTPUT QUEUE
256 BYTE
DATA
N.U.
DATA
N.U.
DATA
N.U.
QUES
MAV
ESB
MSS
N.U.
Meaning
SERVICE
REQUEST
GENERATION
SERVICE
STATUS
REQUEST
BYTE
GENERATION
0
1
4 4
2
8 8
16 16
4
32 32
5
64
6
128 128
7