3. Instruction Set
3-201
API Mnemonic Operands Function
79
D TO P
Write CR data
into Special
Modules
Controllers
ES2/EX2 SS2 SA2
SE
SX2
Bit Devices Word devices Program Steps Type
OP
X Y M S K H KnX KnY KnM KnS T C D E F
m
1
* * *
m
2
* * *
S * * *
n * * *
TO, TOP: 9 steps
DTO, DTOP: 17 steps
PULSE 16-bit 32-bit
ES2/EX2 SS2
SA2
SE
SX2 ES2/EX2 SS2
SA2
SE
SX2 ES2/EX2 SS2
SA2
SE
SX2
Operands:
m
1
: No. of special module m
2
: CR# in special module to be written S: Data to be written in CR
n: Number of data to be written at a time
Explanations:
1. PLC uses this instruction to write data into CR (Control register) on special modules.
2. Setting range of m
1
: ES2/EX2/SS2: 0 ~ 7; SA2/SE/SX2: 0~107
3. Setting range of m
2
: ES2/EX2: 0 ~ 255; SS2: 0~48; SA2/SE/SX2: 0~499.
4. Setting range of n:.
Range of n
ES2/EX2 SS2 SA2/SE/SX2
16-bit instruction 1~4
1~(49 - m
2
) 1~(499 - m
2
)
32-bit instruction 1~2
1~(49 - m
2
)/2 1~(499 - m
2
)/2
Program Example:
1. Use 32-bit instruction DTO to write the content in D11 and D10 into CR#13 and CR#12 of
special module No.0. One 32-bit data is written at a time (n = 1)
2. When X0 = ON, the instruction executes; when X0 = OFF, the previous content in D10 and
D11 won’t be changed.
X0
DTO K0 K12 D10 K1
The rules for operand:
1. m
1
: number of special module. The modules are numbered from 0 (closest to MPU) to 7
automatically by their distance from MPU. Maximum 8 modules are allowed to connect to MPU
and will not occupy any digital I/O points
2. m
2
: number of CR (Control Register). CR is the 16-bit memory built in the special module for
control or monitor purpose, numbering in decimal. All operation status and settings of the
special module are recorded in the CR.
3. FROM/TO instruction reads/writes 1 CR at a time. DFROM/DTO instruction reads/writes 2
CRs at a time.
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