Panasonic A230, Руководство пользователя, Страница: 339 / 377

Communications (Serial and Parallel) OCR Type A230
16 − 63
16.11 Computer Link
PLC data monitor
Register
No.
Value
(Hex.) Description
Data
Bit 15 Bit 0
1 00E1 0 0 0 0 0 0 0 0 1 0 1 1 0 1 0 0 J udgment JD04 − JD01
2 04D2 The value 1234 is stored. CA01
3
FFF4 The value −
12
is stored.
Numeric
CA02
4 0000 The value 0 is stored.
Numeric
Calculation
CA03
(Not set)
5 0038 The value 56 is stored. CA04
Concept:
Four Judgment data are stored per word. The data of JD02 is not set, but “E” is output
because the data before and after JD02 are set.
In the case where the data of CA01, CA02, or CA04 is out of the range between
− 32768
and +32767, “0” is stored in the registers 2 to 5.
When “Data Type” is set to “32
− bit”, four Judgment data are stored per word as
described above. But the data of Numeric Calculation is stored in two words (in this
case, lower bytes are stored in the registers with smaller numbers).
Timing chart for when an overflow occurs
If a numerical calculation overflows (exceeds 32 bits, or exceeds 16 bits in 16 − bit
mode), the OVF signal is output and the data block required for the numerical
calculation is output as zeros.
ON
ON
ON
T1
OFF
OFF
OFF
OFF
/READY
/D1 to D8
/START
Judgment Numerical calculation (overflow)
/OVF
T2
T2
T1
* For the case that the selection is set to “OFF After Read”
T1: START signal width (1ms min.)
T2: Response time with respect to the START signal (within 1ms.)