Status Reporting Commands - Eaton MGR10 Serie Manuel D'utilisation

6.3.6 Status Reporting Commands

There are five groups of registers involved.
The Questionable Data and Operation groups each consist of three registers;
- The Condition Register contains the current status of the instrument and is continuously
updated. The register value can be read at any time using the appropriate query (?)
command.
- The Event Register detects '0' to '1' transitions in the Condition Register and the
appropriate bit is set. The register value can be read at any time using the appropriate
query (?) command. Reading an Event Register results in all the bits of that register being
cleared.
- The Enable Register is a mask which allows any of the bits from the Event Register to set
the appropriate bit in the Status Byte. Setting an enable bit to '1' enables the event bit;
clearing the enable bit inhibits the corresponding event bit. The register value can be read
at any time using the appropriate query (?) command.
The Standard Event group is similar, but consists only of the Event and Enable Registers. There
is no Condition Register.
The Output Buffer stores a single line message to be transmitted to the bus. This can be up to 80
characters long. The message is normally the result of a query (?) command.
The Status Byte group is used to read a summary of the other registers.
Note that all Event Registers are cleared after reading, but the Condition Registers, Enable
Registers, and Status Byte are left unchanged after reading.
The Status Reporting System is summarised in the following diagram.
MGR10 A/B/C Indice : J (version 7.0 du logiciel) 77