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9. Exclusive Commands 1
FROM, TO
- 304 -
{ FROM, TO ... Reading from buffer memory / Writing to buffer memory
Usable device
Bit device Word device
Con-
stant
Pointer
X Y M L F BSB T SM VTCDRWSWZSDKH P
Digit
desig-
nation
Index
No. of
steps
n1
{ { { { { { {
n2
{ { { { { { {
Dn
{ { { { { { {
{
{ { { { {
n3
{ { { { { { {
5
Setting data (FROM)
n1
Head I/O No. (Designate the first two digits of the 3-digit I/O
No. allocated to the intelligent function unit.)
n2
Head address of the buffer memory in which the data to read
is stored.
Dn
Head No. of the PLC register of C6/C64 which will store the
read data.
n3 The number of words of the data to read.
Setting data (TO)
n1
Head I/O No. (Designate the first two digits of the 3-digit I/O
No. allocated to the intelligent function unit.)
n2
Head address of the buffer memory in which the data to write
is stored.
Dn
Head No. of the PLC register of C6/C64 which will store the
write data.
n3 The number of words of the data to write.
FROM
Execution condition
FROM n1 n2 Dn
n3
TO n1 n2 Dn
n3
TO
(Note) As for bit device, the only available unit for designation is 16 bits.
Function
FROM
Reads the data of the buffer memory of MELSEC intelligent function unit out to the C6/C64 PLC.
TO
Writes the data of C6/C64 PLC register into the buffer memory of MELSEC intelligent function unit.