Iord Instruction (Special I/O Unit Read) - Omron C200H-ASC11 Manual

IOWR/IORD Instruction Specifications
6-5-2

IORD Instruction (SPECIAL I/O UNIT READ)

Reading from ASCII Unit Variables
Value (4-digit
hex.)
C:
#FD00
C200HX/HG/HE
15 12 11
S:
102
Value
(see note)
Less Than Flag
(LE) (25507)
Overflow Flag
(OF) (25404)
Underflow Flag
(UF) (25405)
Negative Flag
(N) (25402)
Note SR Area addresses for the C200HX/HG/HE, C200H, and C200HS are given
in parentheses.
There are two methods of using the IORD instruction for the ASCII Unit as fol-
lows:
Transfers from the ASCII Unit's variable to the
words specified in the allocated IR/CIO area
words IR/CIO n + 8 and IR/CIO n + 9.
No. of transfer words (001 to 128 from IR/CIO n + 8) from the ASCII Unit to
the CPU Unit.
Unit No. of the ASCII Unit (0 to F).
ON
---
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---
---
IORD
C: Control code
C
S: Source Unit No., No. of transfer words
S
D: First destination word
D
Details
0
OFF
---
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Combination
Must be used in combination
with the ASCII Unit's PC
QWRITE@ command.
Section 6-5