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1560 Thermometer Readout
User's Guide
14.4.4
14.4.5
14.4.6
14.4.7
166
The RESET function can be used to reset the IEEE-488 interface and clear the
input and output buffers. This is equivalent to executing the DCL or SDC
IEEE-488 device clear commands. Use the LR buttons to change the option
to YES then press ENTER.
Commands
The commands used for remote communications are explained in detail in Sec-
tion 6. Commands are available to control nearly every function of the 1560.
For example, the "ROUT:CLOS (@1)" command can be used to select input
channel 1 for measurement. The "INIT:CONT ON" command can be used to
initiate continuous measuring. The "FETC? (@1)" command can be used to
read measurements from input channel 1.
Serial Poll
Serial poll can be used to alert the IEEE-488 controller whenever certain events
occur such as completed measurement or communication error. Serial poll is
enabled by setting the desired mask bits of the Service Request Enable Register
(see Section 6.5.10.7). For instance, if the SRE register is set using the "*SRE
128" command the 1560 will issue a service request whenever the Operation
Status Bit (OSB) in the Status Byte Register is set (see Section 6.5.10.9). For
summary bits in the Status Byte Register, such as the OSB, reporting must be
enabled by setting certain mask bits in the appropriate status register. For in-
stance, for the OSB to report a completed measurement, bit 4 of the Operation
Status Enable Register must be set (see Sections 6.5.10.13 and 6.5.10.15).
When a service request is generated by the 1560 it sends the SRQ message to
the IEEE-488 controller. The controller then reads the Status Byte Register
from the 1560. (The meaning of each bit in the Status Byte Register is ex-
plained in Section 6.5.10.9.) Bit 6 of the status byte will be set if the 1560
caused the service request. Once the status byte is read the 1560 removes the
SRQ message.
The IEEE-488 controller can use serial poll at any time to read the status byte
from the 1560. Bit 6 of the status byte will be set if the 1560 is requesting ser-
vice or 0 otherwise.
The Status Byte Register can also be polled using the "*STB?" command (see
Section 6.5.10.9).
Device Clear
The 3560 GPIB interface accepts both the DCL and SDC IEEE-488 commands
to clear the device. These clear the input and output buffers.
Device Setup Commands
The SYST:MODn:DEVn:READ? and SYST: MODn:DEVn:WRIT commands
(see Sections 6.5.8.19 and 6.5.8.20) can be used to read or set the setup param-
eters for the 3560 GPIB Communication Device. The device number of the
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