Yokogawa Standalone MW100 - Manual (Page 17)

1-10
IM MW100-17E
MATH Constants and Communication Input Values
The following shows the allowable setting range and notation methods for MATH
constants and communication input values.
Setting Range for MATH Constants and Communication Input Values
–9.9999Ч10 +29
0
–1.0Ч10 –30
1.0Ч10 –30 (infinity)
–
(infinity)
+
9.9999×10 +29
Allowed Setting Range
(1) Negative number (–9.9999x10 +29 to –1.0000x10 –30 )
(2) Zero (0)
(3) Positive number (1.0000x10
–30 to 9.9999x10 +29 )
Notation for MATH Constants and Communication Input Values
Notation
Real number notation
Exponential notation
Format
E
: = [.]
: =
: =0 to 9 (1 or more)
: = “+”, “–”, or blank
General Example
+0.12, –1.3, 2.456, 78
–1.23E–21
• The maximum number of digits for the mantissa is 5. Values having 6 or more digits are rounded to
the 5th digit.
• If the symbol is blank, the next numerical value is treated as a positive number.
Channel Structure
Individual measurement and MATH channels (001-060 or A001-300) can be separated
by periods, or a consecutive range of channels can be specified using a hyphen.
Example To specify A001 and A003, A001.A003. To specify A001 through A003,
A001-003. To specify A001 through A003 and A005, A001-A003.A005.
Point Structure
This is the point structure of broken-line input channels. Each point represents a time of
up to thirty-two points (x: integer between 0 and 86400) and an output value (y: integer
between –30000 and 30000).
Point Structure of Broken-Line Input Channels.
Maximum 86400 (24 h)
–30000
30000
Output value (y)
Specify up to 32 points from P1 to P32
Time (sec) (x)
P1 P2 P3 P4 P32
Example of Broken-Line Input Channel Setting
The points of the broken-line input channel consist of only those specified as
parameters of the UL command. The last point must be set to a terminator of point
(-1.0).
VL commands of three types can be selected: OFF, SINGLE, and REPEAT.
100
60 120 180
200
Output value
( Example ) VLP01,SINGLE,(0.100),(60.200),(120.200),(121.100),(180.100),(-1.0)
Time [sec] (x)
P1 (0,100)
P2 (60,200) P3 (120,200)
P4 (121,100)
P5 (180,100)
P1 P2 P3 P4 P5 Terminator
1.3 Parameters