User`s manual

142 Chapter 6
O:\Manuals\E6380A_Progguid\Book\Advoper.fm
Advanced Operations
Status Reporting
Example 6-38 Example
OUTPUT 714;"*ESE 255"
The *ESE command sets the bit pattern (bits 0 through 7) of the
Standard Event Status Enable Register. The Standard Event Status
Enable Register allows the programmer to indicate the occurrence of
one or more events (as defined by bits 0 through 7 of the Standard
Event Status Register) in bit 5 of the Status Byte Register.
The bit pattern set by the *ESE command is determined by selecting
the desired event(s) from the Standard Event Status Register, setting
the value of the bit position(s) to a logical one, setting the value of all
non-selected bit positions to a logical zero, and sending the
binary-weighted decimal equivalent of bits 0 through 7 after the *ESE
command. For example, if the programmer wished to have the
occurrence of a Command Error (bit position 5 in the Standard Event
Status Register) and the occurrence of a Query Error (bit position 2 in
the Standard Event Status Register) to be reflected in bit 5 of the
Status Byte Register, the binary-weighted decimal value of the bit
pattern for the Standard Event Status Enable Register would be
determined as follows:
Example 6-39 Example
OUTPUT 714;"*ESE 36"
The decimal value of the bit pattern must be a positive integer in the
range of 0 to 255. Sending a negative number or a number greater than
255 causes an
HP-IB Error: -222 Data out of range.
Clearing the Enable Register
The ENABLE register is cleared by writing to it with an integer value
of zero.
Table 6-4
Bit Position76543210
Logical Value00100100
Binary
Weighting
128 64 32 16 8 4 2 1
Decimal Value0 +0+32+0+0+4+0+0= 36