Ametek Lx Series II Programming Manual Instrukcja Użytkownika Pobierz pdf (Strona 154)

Programming Manual Lx \ Ls Series II

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7. Programming the Status and Event Registers

You can use status register programming to determine the operating condition of the AC source at

any time. For example, you may program the AC source to generate an interrupt (assert SRQ)

when an event such as a current limit occurs. When the interrupt occurs, your program can then

act on the event in the appropriate fashion.

Figure 7-1 shows the status register structure of the AC Source. Table 7-2 defines the status bits.

The Standard Event, Status Byte, and Service Request Enable registers and the Output Queue

perform standard IEEE-488 functions as defined in the IEEE 488.2 Standard Digital Interface for

Programmable Instrumentation. The Operation Status, Questionable Status, and Questionable

Instrument Isummary Status registers implement functions that are specific to the AC source.

7.1 Power-On Conditions

Refer to the *RST command description in chapter 4, Table 5-2 for the power-on conditions of the

status registers.

7.2 Operation Status Group

The Operation Status registers record signals that occur during normal operation. The group

consists of the following registers:

Command

Description

Condition

STAT:OPER:COND?

A register that holds real-time status of the

circuits being monitored. It is a read-only

PTR Filter

STAT:OPER:PTR <n>

A positive transition filter that functions as

described under STAT:OPER:NTR|PTR

commands in chapter 4. It is a read/write

NTR Filter

STAT:OPER:NTR <n>

A negative transition filter that functions as

described under STAT:OPER:NTR|PTR

commands in chapter 4. It is a read/write

Event

STAT:OPER:EVEN?

A register that latches any condition that is

passed through the PTR or NTR filters. It is a

read-only register that is cleared when read.

Enable

STAT:OPER:ENAB <n>

A register that functions as a mask for enabling

specific bits from the Event register. It is a

read/write register.

Table 7-1: Operation Status registers

The outputs of the Operation Status register group are logically-ORed into the OPER(ation)

summary bit (7) of the Status Byte register.

1 2 ... 149 150 151 152 153 154 155 156 157 158 159 ... 241 242

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