Omron NT31 User Manual

363
Numeral Display
Section 7-8
<Relationship between contents of host words and displayed numeric value>
When displaying the contents of a numeral memory table allocated to a word at
the host, the contents of the word are first converted to the format for storage in
the numeral memory table (signed hexadecimal), and then converted again in
accordance with the settings for “Display Type” and “Display Sign” settings in
order to display them. Therefore the result also differs according to the settings
made for “Words” and “Storage Type”.
An example is given below.
Contents of
word at host
“Storage
Type”
“Words”
Numeric value
stored in
numeral
memory table
“Display
Type”
Sign
Displayed
numeric value
1234 000004D2H 1234
F123
1
FFFFFF85H Unsigned 123
F0001234 2 FFFFFB2EH 1234
1234 000004D2H
Decimal
1234
F123 BCD
1
FFFFFF85H Signed −123
F0001234 2 FFFFFB2EH −1234
1234 000004D2H 4D2
F123
1
FFFFFF85H Hexadecimal
–
FF85
F0001234 2 FFFFFB2EH
–
FFFFFB2E
1234 00001234H 4600
F123
1
FFFFF123H Unsigned 3805
F0001234 2 F0001234H 268430796
1234 00001234H
Decimal
4660
F123
Binary
1
FFFFF123H Signed −3805
F0001234
Binary
2 F0001234H −268430796
1234 00001234H 1234
F123
1
FFFFF123H Hexadecimal
–
F123
F0001234 2 F0001234H
–
F0001234
Reference: Data is stored in the numeral memory table as signed data with a data length of 4
bytes.
If the setting for “Storage Type” is “BCD”, the contents of the host word(s) (BCD
data) are converted to signed binary (hexadecimal) data and then stored in the
numeral memory table. If the most significant digit in the word contents is “F”, it is
regarded as a negative value. If the BCD data is not correct, it is not read out and
the existing value is retained.
If the setting for “Storage Type” is “Binary”, the contents of the host word(s) are
stored in the numeral memory table without alteration. However, if a negative val-
ue is written when the number of allocated host words is 1, the number of bits is
increased to accommodate 2-word signed data before storage (refer to the exam-
ple of “F123” above).
When the numeric value for display is designated as unsigned, it is displayed as
an absolute value.
[Display Functions]
In numeral display, the numeric values are displayed in accordance with the “Gen-
eral” settings.

Omron NT31 Specifications

General

Brand	Omron
Model	NT31
Category	Touch terminals
Language	English