INSTRUCTIONAL MANUAL
2750L-P/4500L-P/6000L-P
August, 2001
Rev. K
-51-
3.7.2
MESSAGE FORMAT
The message sent to the AC Power System must have the following format for each parameter:
HHHDXXX---------------E±NND
where
H
=
Three letter mnemonic for each message header.
D
=
Optional header extension (A, B or C) to specify output (ref. Table 3-5 through 3-8)
X
=
Alpha, numeric or # for message header argument.
E
=
Optional ASCII E for exponent identification
±
=
Exponent sign
N
=
Exponent value 0 to ±63
D
=
Message string delimiter, (CR) (LF) or (LF)
More than one message header with its corresponding argument may be sent in one setup string with a common
delimiter.
3.7.3
NUMERIC DATA FIELD
Parameter values may be sent as an unsigned value with a decimal point or a decimal point with an exponent. The
phase value may be sent as a signed value.
The Decimal Point for numeric data values may be either sent or inferred. The two following ASCII strings will
represent 115 volts.
AMP115
AMP115.0
There may be any number of digits following the decimal point, not to exceed the 256 byte DAM buffer, but only the
Least Significant Digit (LSD) of resolution will be recognized. The LSD for amplitude is 0.1 volts. The LSD for
frequency is either 0.01, 0.1 or 1 Hz for up to 99.99, 999.9 or 5000 Hz respectively.
Any parameter's numeric value may be of a mixed form with a decimal point and exponent. The exponent may be a
numeric, with or without leading zeros, up to a value of ±63. The following ASCII strings will represent 15 volts:
AMP1.15E2
AMP1.15E+2
AMP1.15E+02
AMP1150E-1
A positive exponent value is represented by either an ASCII "+" or an unsigned value.
3.7.4
PROGRAM HEADERS
A Program Header is a mnemonic of a series of three ASCII characters used to select a function or identify the data it
precedes. The header is an abbreviation of the program function it identifies. The header may be followed by a header
extension to separately program each output (phase A, B or C) to different values. If an extension is not added to the
header all outputs will be programmed to the header's argument. See Table 3-12 for the definition of the Program
Headers and their related arguments.
Содержание 12000L-1P
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Страница 136: ...INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 132 Figure 10 11 ABNORMAL OPERATION...
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Страница 138: ...INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 134 Figure 14 EMERGENCY VOLTAGE...
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