Specifications

MFC-CB™ Operation and Maintenance Manual
©2001~2007 DH Instruments, a Fluke Company Page 76
4.4.1.2 STANDARD EVENT REGISTER
The MFC-CB contains an 8 bit Standard event register that reflects specific MFC-CB events.
Enabled events in this register will set or clear the ESB bit of the status byte register.
Table 11. Standard Event Register
PON
(128)
URQ
(64)
CMD
(32)
EXE
(16)
DDE
(8)
QYE
(4)
RQC
(2)
OPC
(1)
This register can be read using the “*ESR?” query. Each of these status bits can
set the ESB bit of the status byte register, causing an SRQ to occur IF the ESB bit is
enabled to do so. The Standard Event Status Enable Register (“∗ESE” program message)
determines which of these flags are able to assert the ESB bit. The description of
these bits are given as:
• PON: Power On (Bit 7)
Indicates that the MFC-CB power has been cycled since the last time this bit
was read or cleared.
• URQ: User Request (Bit 6)
Indicates that the MFC-CB was set to local operation manually from the front
panel by the user (pressing the ESC key).
• Command Error (Bit 5)
Indicates that a remote command error has occurred. A command error is
typically a syntax error in the use of a correct program message.
• EXE: Execution Error (Bit 4)
Indicates if a remote program message cannot be processed due to device
related condition.
• DDE: Device Dependent Error (Bit 3)
Indicates that an internal error has occurred in the MFC-CB (e.g., a transducer time-out).
• QYE: Query Error (Bit 2)
Indicates that an error has occurred in the protocol for program message
communications. This is typically caused by a program message being sent to
the MFC-CB without reading a waiting reply.
• RQC: Request Control (Bit 1)
This bit is not supported as the MFC-CB cannot become the active controller
in charge.
• OPC: Operation Complete (Bit 0)
Indicates that the MFC-CB has completed all requested functions.