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6. Expanded data transfer instruction
6.1 Instruction Specification
This section presents an overview of the XFER instructions, which is the instruction that is used
to control the S20LP-station from T2N/T3H user programs. S20LP-station transmission control
is performed solely using the XFER instructions.
(1)
Instruction format
The format of XFER instruction.
(2)
Function
When the input is ON, data block transfer is performed between the source which is
indirectly designated by A and A+1 and the destination which is indirectly designated by C
and C+1. The transfer size (number of words) is designated by B. The transfer size is 1 to
256 words.
Input
Operation
OFF
No execution
ON
Normal execution
When error is occurred
(3)
Operand
Operand
Name
A Source parameter
B Transfer size
C Destination
parameter
Input
[ A
X F E R
Register
Device
X
Y
S
L
R
Z
X
Y
W
W
ü ü ü ü ü ü ü ü ü ü
ü ü ü ü ü ü ü ü ü ü
ü ü ü ü ü ü ü ü ü
42
Output
B
C ]
S
L
R
W T
C
D
F
W
W
W
6 F 3 B 0 3 5 6
Output
ERF
OFF
OFF
ON
SET
Con-
stant
INDEX
Index
I
O
I
J
K
W
W
ü
ü
ü
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