DH Instruments PPCK PLUS, Operation And Maintenance Manual

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PPCK+™ Operation and Maintenance Manual
Page 107
©2001 DH Instruments, Inc .
ZNATERRn:HI
Purpose Read or set the autozero natural error (ZNATERR) for the selected RPT range and
measurement mode. PPCK+ has only a Hi RPT.
Command
Query “ZNATERR n :HI NatErr, Date ”
“ZNATERR n :HI?”
Classic “ZNATERR n :HI = NatErr, Date”
“ZNATERR n :HI”
Defaults “ZNATERR n :HI = 0.0, 800101”
Arguments n: The RPT range: ‘1’ for the low, ‘2’ for the medium ‘3’ for the high
range of the selected RPT.
NatErr: The RPT natural error for the RPT range.
Date: The date when the last edit to the NatErr was made.”.
Remarks The natural error (ZNATERR) for the specified RPT (always Hi RPT in PPCK+) and
RPT range (1, 2, or 3) can be accessed with this program message. Using this
program message will overwrite the current natural error, so caution must be used.
Changes made using this program message will take effect immediately.
Example
(enhanced) Cmd sent:
Query reply: “ZNATERR1:HI 10, 961201”
“ 10.00 Paa, 961201”
Example
(classic) Sent:
Reply: “ZNATERR1:HI =10, 961201”
“ 10.00 Paa, 961201”
Errors ERR# 6: One of the arguments are out of range.
See Also 3.4.1, 5.2.6
4.5 STATUS REPORTING SYSTEM
The PPCK+ status reporting system is used to track and report system status and errors. It follows
the model of the IEEE Std 488.2 and works for the COM1 and the IEEE-488 port with
slight differences. The PPCK+ can be programmed to respond to various status conditions by
asserting the SRQ of the IEEE-488 interface. The COM1 port cannot be supported in such a way,
so polling must be used.
4.5.1 ERROR QUEUE
The PPC keeps track of remote errors by using an error queue. If an error occurs, it is
pushed onto the Error Queue. If you are using the COM1 port, the error number is
immediately replied in the form “ERR#
nn where nn is the error code from 0 to 99.
The “ERR?” (or “ERR”) query can then be used to pull the error from the Error Queue in it’s
descriptive text format. If you are using the enhanced program message format, the Error
Queue will accumulate errors until full unless they are pulled from the queue. If you are using
the classic program format, the Error Queue is cleared every time a new program message
is received.