7 Application Instructions API 50-99
DVP-PLC APPLICATION MANUAL
7-75
API Mnemonic Operands Function
78
D FROM P
Read CR Data in Special
Modules
Controllers
ES/EX/SS SA/SX/SC EH/SV
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
* * *
D * * * * * * * *
n * * *
FROM, FROMP: 9 steps
DFROM, DFROMP: 17 steps
PULSE 16-bit 32-bit
ES EX SS SA SX SC EH SV ES EX SS SA SX SC EH SV ES EX SS SA SX SC EH SV
Operands:
m
1
: No. of special module m
2
: CR# in special module to be read D: Device for storing read data n:
Number of data to be read at a time
Explanations:
1. Range of m
1
(16-bit and 32-bit): for ES/SA: 0 ~ 7, for EH/EH2 :0 ~ 255, for SV: 0 ~ 107.
2. Range of m
2
(16-bit and 32-bit): for ES/SA: 0 ~ 48, for EH: 0 ~ 254, for EH2/SV: 0 ~ 499.
3. Range of n:
a) 16-bit: for ES/SA: 1 ~ (49 – m
2
), for EH: 1 ~ (255 – m
2
), for EH2/SV: 1 ~ (500 – m
2
).
b) 32-bit: for ES/SA: 1 ~ (49 – m
2
)/2, for EH: 1 ~ (255 – m
2
)/2, for EH2/SV: 1 ~ (500 – m
2
)/2.
4. ES series MPU does not support E, F index register modification.
5. m
1
, m
2
and n of EH series MPU do not support word device D.
6. Flag: M1083 (On when allowing interruptions during FROM/TO instruction).
7. This instruction is for reading the data in the CR in special modules.
8. The 16-bit instruction can designate D = K1 ~ K4; the 32-bit instruction can designate D = K1 ~ K8.
Program Example:
1. Read CR#29 of special module No.0 into D0 and CR#30 into D1. Only 2 groups of data is read at a time (n = 2).
2. When X0 = On, the instruction will be executed. When X0 = Off, the instruction will not be executed and the data
read will not be changed.
X0
FROM K0 K29 D0 K2
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