6243/44 DC Voltage Current Source/Monitor Operation Manual
5.2.8 Status Byte
5-13
(2) Event Enable Register
Each Event Register has an Event Enable Register that determines which bit to enable. The Enable
Register sets the relevant byte in decimal values.
• Service Request Enable Register setting: *SRE
• Standard Event Status Enable Register setting: *ESE
• Device Event Enable Register setting: DSE
Example: Enabling only the EOM bit of the Device Event Register
When the EOM bit of the Device Event Register is set to 1, the DSB bit of the Status
Byte Register is set to 1.
PRINT @ 8; “DSE32768” (N88BASIC program example)
OUTPUT 708; “DSE32768” (HP200, 300 series program example)
Example: Enabling the Status Byte Register’s DSB (Device Event Status Register summary) bit
and the ESB (Standard Event Status Register summary) bit When the DSB bit or the ESB
bit are set to 1, the Status Byte Register’s MSS bit is set to 1.
PRINT @ 8; “*SRE40” (N88BASIC program example)
OUTPUT 708; “*SRE40” (HP200, 300 series program example)
(3) Status Byte Register
The Status Byte Register summarizes the information from the Status Register. And, the Status Byte
Register’s summary is transmitted as service request to the controller.
Consequently, the function of the Status Byte Register is slightly different from that of the Status reg-
ister structure. The Status Byte Register is explained in following.
Figure 5-2 shows the structure of the Status Byte Register.
Figure 5-2 Structure of Status Byte Register
Except for the following 3 points, the Status Byte Register is similar to the Status Register.
• The Status Byte Register’s summary is written to bit 6 of the Status Byte Register.
• The Enable Register’s bit 6 is always enabled and cannot be changed.
• The Status Byte Register’s bit 6 (MSS) writes the RQS of the service request.
MSS
Status Byte Register
Service Request Enable Register
MAV DSBESB 2 1
RQS
MSS
7012345X
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