Hitachi EH-150 Series - Page 182

Appendix
A - 18
Task code
H42
Forced set/reset with I/O number designation
(Series N points)
Classification
I/O Control
 Function
Forcibly sets and resets the designated data in N continuous points (words) of data area, starting with the
designated I/O.
 Execution condition
CPU Status
Occupation
STOP RUN HALT
ERROR
READ occupation
   
WRITE occupation
   
Not occupied
- - - -
 Request format
H 4 2
(a)
(b)
(c)
(d)
(a) I/O code (refer to the I/O code table)
(b) I/O number (refer to I/O number decimal/hexadecimal conversion chart)
(c) Number of bits H01 to HC8 (1 to 200)
Number of words H01 to H64 (1 to 100)
(d) Set / reset data
(Bit data)
1st point
2nd point
3rd point
8th point
Binary image (H00 to HFF)
bit7
bit0
Number of points / 8
* When the number of set/reset points
is less than 8 points, the open bits
are set to “0” (H00 to HFF).
(Word data)
Binary image (H0000 to HFFFF)
Number of words
H
L
1st word
Nth word
 Response format
H 4 2
(a)
(a) Response task code (H00 when executed normally)
For task codes other than the normal task codes, refer to the “response list by
task code” at the end of this chapter.
 Example
Write 2 words to WR200. (WR200=H1234, WR201=H5678)
Request : STX 2 FFFF0000 42 0A 000200 02 1234 5678 09 CR
Request (ASCII) : 02 32 4646464630303030 3432 3041 303030323030 3032 31323334 35363738
3039 0D
Response : STX FFFF0000 00 42 SUM CR