Lakeshore Learning Materials 642 - Manual (Page 83)

Lake Shore Model 642 Electromagnet Power Supply User’s Manual
Computer Interface Operation 5-31
*SRE Service Request Enable Register Command
Input: *SRE <bit weighting>[term]
Format: nnn
Remarks: The Service Request Enable Register determines which summary bits of the Status Byte may set bit 6
(RQS/MSS) of the Status Byte to generate a Service Request. This command programs the enable
register using a decimal value that corresponds to the binary-weighted sum of all bits in the register.
Refer to Paragraph 5.1.4.4.
*SRE? Service Request Enable Register Query
Input: *SRE?[term]
Returned: <bit weighting>[term]
Format: nnn (Refer to command for description)
*STB? Status Byte Query
Input: *STB?[term]
Returned: <bit
weighting>[term]
Format: nnn
Remarks: This command is similar to a Serial Poll except it is processed like any other instrument command. It
returns the same result as a Serial Poll except that the Status Byte bit 6 (RQS/MSS) is not cleared.
Refer to paragraph 5.1.4.4.4
*TST?
Self-Test Query
Input: *TST?[term]
Returned: <status>[term]
Format: n
<status> 0 = No errors found, 1 = Errors found
Remarks: The Model 642 reports status based on test done at power up.
*WAI
Wait-to-Continue Command
Input: *WAI[term]
Remarks:
This command is not supported in the Model 642.
BAUD RS-232C Baud Rate Command
Input: BAUD <bps>[term]
Format:
n
<bps>
Specifies Baud rate: 0 = 9600 Baud, 1 = 19200 Baud, 2 = 38400 Baud, 3 = 57600 Baud.
BAUD? RS-232C Baud Rate Query
Input: BAUD?[term]
Returned: <bps>[term]
Format:
n (Refer to command for description)