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8.4 Communication Methods
114
Status Byte Register (STB)
During serial polling, the contents of the 8-bit Status Byte Register are sent from
the instrument to the controller.
When any Status Byte Register bit enabled by the Service Request Enable Reg
-
ister has switched from 0 to 1, the MSS bit becomes 1. Consequently, the SRQ
bit is set to 1, and a service request is dispatched.
The SRQ bit is always synchronous with service requests, and is read and simul
-
taneously cleared during serial polling. Although the MSS bit is only read by an
*STB?
query, it is not cleared until a clear event is initiated by the
*CLS
com
-
mand.
Service Request Enable Register (SRER)
This register masks the Status Byte Register. Setting a bit of this register to 1
enables the corresponding bit of the Status Byte Register to be used.
Bit 7
unused
Bit 6
SRQ
MSS
Set to 1 when a service request is dispatched.
This is the logical sum of the other bits of the Status Byte Regis
-
ter.
Bit 5
ESB
Standard Event Status (logical OR) bit
This is logical sum of the Standard Event Status Register.
Bit 4
MAV
Message available
Indicates that a message is present in the output queue.
Bit 3
unused
Bit 2
unused
Bit 1
ESB1
Event Status (logical OR) bit 1
This is the logical sum of Event Status Register 1.
Bit 0
ESB0
Event Status (logical OR) bit 0
This is the logical sum of Event Status Register 0.
HIOKI BT3562A981-09
Содержание BT3562
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Страница 24: ...1 5 Measurement Flowchart 18 HIOKI BT3562A981 09...
Страница 84: ...4 13 Reset Function 78 HIOKI BT3562A981 09...
Страница 93: ...5 4 Internal Circuitry 87 5 Chapter 5 External Control EXT I O 5 4 Internal Circuitry HIOKI BT3562A981 09...
Страница 102: ...6 3 Printing 96 HIOKI BT3562A981 09...
Страница 186: ...8 8 Sample Programs 180 HIOKI BT3562A981 09...
Страница 198: ...10 3 Error Display 192 HIOKI BT3562A981 09...
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Страница 220: ...Appendix 11 Dimensional Diagram A20 HIOKI BT3562A981 09...
Страница 224: ...Index HIOKI BT3562A981 09...
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