![YOKOGAWA MT210 User Manual Download Page 88](http://html.mh-extra.com/html/yokogawa/mt210/mt210_user-manual_911286088.webp)
App-12
IM 767361-01E
Status Byte Format
GP-IB (Response to the Serial Poll)
DI08
DI07
DI06
DI05
DI04
DI03
DI02
DI01
0
(fixed)
SRQ ERROR
OVER
Syntax
Error
24 VOUT
-OL-
Calcula-
tion
END
Auto
store
END
SRQ (DIO 7)
This bit is set to 1 when a computation END, syntax ERROR, or OVER occurs,
and SRQ is set to True, thereby issuing a service request to the controller.
ERROR (DIO 6)
When a syntax ERROR, or OVER occurs, this bit is set to 1.
24VOUT-OL- (DIO 5)
When an overload occurs while 24 VDC is being output, thereby forcing the 24
VDC output to turn OFF, this bit is set to 1.
OVER (DIO 4)
This bit is set to 1 when an overrange occurs in the measured data or when a
computation overflow occurs. The status of OVER can be identified using the
OE command.
Syntax ERROR (DIO 3)
This bit is set to 1 when a command error, parameter error, or execution error
occurs. The nature of the syntax error can be identified using the OE command.
Auto store END (DIO 2)
This bit is set to 1 when the measured or computed data has been stored in
auto store mode.
Computation END (DIO 1)
This bit is set to 1 when computation has been completed and the display is
updated.
Note
• After the status byte responds to the serial poll from the controller, this bit is reset to 0. Until
the serial poll is responded to, each interrupt is stored, and if more interrupts occur thereafter,
they are added.
• To prevent the SRQ and status byte being affected by a computation END, syntax ERROR, or
OVER, use the IM command to set a value with the corresponding bits set to 0.
• When you are creating a communications program using the status byte, make sure that
the SRQ bit is set to 1 as well as the bit corresponding to the interrupt. In this way you can
acknowledge interrupts by issuing a serial poll continuously, instead of by using an SRQ
interrupt.
Appendix