Reading Registers - Keithley 6430 Instruction Manual

14-6 Status Structure
The <NDN> (non-decimal numeric) parameter type is used to send non-decimal values.
These values require a header (#B, #H, or #Q) to identify the data format being sent. The letter
in the header can be upper or lower case. The <NRf> (numeric representation format) parame-
ter type is used to send decimal values, and does not use a header. The following examples
show the proper parameter syntax for setting Bits B5, B3, and B2:
#b101100
#h2C
#q54
44
Valid characters for the non-decimal parameter values are shown as follows:
<NDN> format
Binary
Hexadecimal
Octal

Reading registers

Any register in the status structure can be read by using the appropriate query (?) command.
The following explains how to interpret the returned value (response message). The actual
query commands are covered later in this section (Tables 14-3 through 14-7).
The response message will be a value that indicates which bits in the register are set. That
value (if not already binary) will have to be converted to its binary equivalent. For example, for
a binary value of 100101, bits B5, B2, and B0 are set.
The returned value can be in the binary, decimal, hexadecimal, or octal format. The
FORMat:SREGister command is used to select the data format for the returned value
(Table 14-2).
For non-decimal formats, one of the following headers will accompany the returned value to
indicate which format is selected:
#B = Header for binary values
#H = Header for hexadecimal values
#Q = Header for octal values
Binary format (<NDN> parameter type)
Hexadecimal format (<NDN> parameter type)
Octal format (<NDN> parameter type)
Decimal format (<NRf> parameter type)
Valid characters
1s and 0s
0 through 9 and A through F
0 through 7