Eaton ELC-PB, Programming Manual

Page: 385 / 728

E L C P r o g r a m m i n g M a n u a l
F o r m o r e i nf o r m a t i o n v i sit :
w w w. e a t o n . c o m
MN05003003E
3-216
API Mnemonic Operands Function
78 D FROM P
m
1
, m
2
, D, n
Read CR from Module
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
ELC ELCB ELCM
PB PC/PA/PH PV PB PH/PA
32 16 P 32 16 P 32 16 P 32 16 P 32 16 P
Operands:
m
1
: Specialty module number
m
2
: CR (Control Register) number in the specialty module
D
: Location to save the read data
n
: number of data words to read
Description:
1. The ELC uses this instruction to read CR data from specialty modules.
2. Range of
m
1
(16-bit and 32-bit): for ELC-PB/PC/PA/PH, ELCB-PB, ELCM-PH/PA: 0 ~ 7, for
ELC-PV: 0 ~ 7, 100 ~ 107 (0-7 are right-side modules and 100-107 are left-side modules).
3. Range of
m
2
(16-bit and 32-bit): for ELC-PB/PC/PA/PH, ELCB-PB: 0 ~ 48, for ELC-PV: 0 ~
499, for ELCM-PH/PA: 0 ~ 255.
4. Range of n:
a) 16-bit: for ELC-PB/PC/PA/PH, ELCB-PB: 1 ~ (49 –
m
2
), for ELC-PV: 1 ~ (500 –
m
2
) , for
ELCM-PH/PA: 1 ~4
b) 32-bit: for ELC-PB/PC/PA/PH, ELCB-PB : 1 ~ (49 –
m
2
)/2, for ELC-PV: 1 ~ (500 –
m
2
)/2,
for ELCM-PH/PA: 1 ~2.
5. When
D
indicates a bit device operand, use K1~K4 for the16-bit instruction and K5~K8 for the
32-bit instruction.
6. Flag: When M1083=ON, it enables interrupts during the execution of the FROM/TO
instructions.
7. ELC-PB, ELCB-PB series doesn’t support the index registers E, F.
Program Example:
1. Read the contents of CR#29 and CR#30 from specialty module#0 and place the data in D0
and D1.in the ELC controller. 2 words are read because
n
=2.
2. The instruction will be executed when X0=ON.
X0
FROM K0 K29 D0 K2