Fluke 5790B - Checking Product Status

5790B
Operators Manual
6-72
Table 6-7. Operating State Transitions
From To Use
Typical GPIB
Command
Local
Remote MAL + REN REMOTE
Local/Lockout LLO + REN LOCKOUT
Remote
Local
GTL or LOCAL
CONTROL selection
LOCAL
Remote/Lockout LLO + REN LOCKOUT
Local/Lockout Remote/Lockout MLA + REN
REMOTE or any
Calibrator command
Remote/Lockout
Local REN not LOCAL
Remote/Lockout GTL Manually using WBYTE
Checking Product Status
The Product provides access to status registers, enable registers, and queues in
the Product that indicate various conditions in the instrument as shown in Figure
6-1. Some registers and queues are defined by the IEEE-488.2 standard. The
rest are specific to the Product. In addition to the status registers, the Service
Request control line, SRQ, and a 16-element buffer called the Error Queue
provide status information. Table 6-8 lists the status registers and gives the
read/write commands and mask registers associated with each.
Each status register and queue has a summary bit in the Status Byte Register.
Enable registers are used to mask various bits in the status registers and
generate summary bits in the Status Byte Register. The Service Request Enable
Register can be used to assert the IEEE-488 Service Request (SRQ) control line
on detection of any status condition or conditions the programmer chooses.