Remote Operation
5-53
5.11.4 Channel Summary
The Channel Summary registers summarize the channel status conditions of up to 8
channels.
When an enabled bit in the Channel Status Event register is set, it causes the
corresponding channel bit in the Channel Summary Event register to be set.
Reading of the Event register will reset it to zero.
The Channel Summary Enable register can be programmed to specify which channel
summary event bit from the existing channels is logically-ORed to become Bit 2 (CSUM
bit) in the Status Byte register.
5.11.5 Questionable Status
The Questionable Status registers offer you one or more questionable status conditions,
which indicate certain errors or faults have occurred on at least one channel. Table 5-6
lists the questionable status conditions that are applied to the electronic load. These
conditions are the same as the channel status conditions. Refer to Table 5-5 for a
complete description.
When the corresponding bit of the Questionable Status Condition register is set, the
indicated condition is true.
Program the PTR/NTR filter to select which way of a condition transition on a bit in the
Questionable Status Condition register will set the corresponding bit in the Event
registers. Reading the Questionable Status Event register will reset it to zero.
The Questionable Status Enable register can be programmed to specify which question-
able status event bit is logically-ORed to become Bit 3 (QUES bit) in the Status Byte
register.
Mnemonic
Bit
Value
Meaning
CE/OC
0
1
Current Error (Overcurrent)
OV
1
2
Overvoltage
PE/OP
2
4
Power Error (Overpower)
RV
3
8
Reverse voltage on input
TE/OT
4
16
Temperature Error (Overtemperature)
Table 5-6 Bit Description of Questionable Status
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