Operating instructions

Status Reporting

Table 5-3. Standard Event Status Bit Description (continued)

Mnemonic Bit

Value Meaning

CME 5 32 Command Error. A syntax or semantic error has occurred or the electronic

load received a < GET > within a program message. Errors in the range of

-199 thru -l00 can set this bit.

PON 7 128 Power On. The electronic load has been turned on or off since the last time this

Bits 1 and 7 are not used by the electronic load.

Operation Status

The Operation Status registers let you determine whether either of the operation conditions described in Table 5-4

presently exist on the electronic load.

The Operation Condition register represents the present status of the electronic load; the bits are set when the indicated

condition is true.

The PTR/NTR filter determines what type of transition in the Operation Condition register will set the bit in the

corresponding Operation Event register.

•

Programming a bit in the PTR filter causes a 0-to-1 transition in the Operation Condition register to set the

corresponding bit in the Operation Event register.

•

Programming the NTR filter causes a 1-to-0 transition to set the bit.

•

Programming both filters causes either transition to set the bit.

If the transition filters are not programmed, the bit is disabled.

Table 5-4. Operation Status Bit Description

Mnemonic Bit

Value Meaning

CAL 0 1 Calibrating. A calibration calculation is in progress. (Refer to the Operating

Manual for details of calibration commands.)

WTG 5 32 Waiting for trigger. At least one channel is waiting for a trigger to occur. Any

TRIG command for any mode on any channel sets this bit. When a trigger is

received, the bit is reset. ABORt also resets this bit.

Bits 1-4, and 6-15 are not used by the electronic load.

Note When the unit is turned on, the PTR filter is programmed on for the CAL bit, and the NTR filter is

programmed on for the WTG bit.

The Operation Event register represents all of the filtered operation conditions that have occurred since the last time this

The Operation Enable register can be programmed to specify which operation event bits are logically-ORed to become Bit

7 (OPER bit) in the Status Byte register.

Note Refer to the Electronic Load Operating Manual for information about calibration.