Cosmo LS-R700 User Manual

38 3 Interface
3
2.5 Checksum
Checksum is two’s complement of the value that adds every ASCII code in the calculation range.
Calculation example: T format
Character number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Transmitted data
#
0
0
0
0
2
-
0
0
0
.
4
:
3
2
CR
ASCII
Code
HEX
23
30
30
20
30
30
20
32
20
2D
30
30
30
2E
34
3A
D
DEC
35
48
48
32
48
48
32
50
32
45
48
48
48
46
52
58
13
DEC
notation
HEX
notation
Lower two digits
Remarks
HEX notation BIN notation
Calculation
of
data strings
Sum
718
2CE
CE
11001110
Sum of every ASCII code
Complement
-719
D31
31
110001
Complement of the sum
Two’s complement
-718
D32
32
110010
Adds 1 to the complement value
Checksum
32
2.6 Printer
Use a printer that can print 80 characters or more in one line, and that can print character fonts. Also, use a
cable whose length is 3 m or shorter.
Recommended Printer: DPU-414 series (Seiko)
Printer Cable Wiring
Change settings for the printer to the follows:
CR: Carriage Return
Baud Rate: 9600 (bps)
Data Dumping
Data is printed out after every leak test.
Print Out Fields
Field
Example
DATE
12-12-01
Date the test was completed (YY-MM-DD)
TIME
11:14:21
Time the test was completed
CH#
00
Channel number I which the test was done
TOTAL#
116
Quantity of parts that have been tested
PRESSURE
97.8 kPa
Test pressure measured
dP [Pa]
5.59
The detected differential pressure drop
COMP[Pa]
5.77
Amount of compensation
LEAKAGE
0 mL/min
Calculated leak rate (after compensation)
RESULT OK
Judgment of whether part is within the programmed leak limits (Pass).
If there is an error detected during the leak test, an error symbol will be printed.
DPU414
9 pin
SD(TxD)
RD(RxD)
RS(RTS)
CS(CTS)
SG
LS-R700
9 pin
2
3
5
FG
SD(TxD)
RD(RxD)
SG
2
3
7
8
5

Cosmo LS-R700 Specifications

General

Brand	Cosmo
Model	LS-R700
Category	Test Equipment
Language	English