Delta RTU-ECAT - Terms

RTU-ECAT Operation Manual
5-2
5
This section describes how RTU-ECAT as an EtherCAT slave realizes the data exchange between EtherCAT
master and DVP-S series extension modules.
 EtherCAT master transmits the data to extension modules.
 The input data from extension modules are transmitted back to EtherCAT master.
DVP-04AD DVP-04DA DV
P
-1
6
SP
N
O
D
E
A
D
D
R
E
S
S
x
1
0
x
1
0
1
0
5
4
3
2
1
0
9
8
7
6
5
4
3
2
1
0
9
8
7
6
R
T
U
-
E
C
A
T
P
O
W
E
R
R
U
N
A
L
A
R
M
R
U
N
S
T
O
P
E
th
e
rC
A
T
I
N
O
U
T
EtherCAT
Mast er
DVP-04AD DVP-04DA DVP-16SP
N
O
D
E
A
D
D
R
E
S
S
x
1
0
x
1
0
1
0
5
4
3
2
1 0
9
8
7
6
5
4
3
2
1
0
9
8
7
6
R
T
U
-
E
C
A
T
P
O
W
E
R
R
U
N
A
L
A
R
M
R
U
N
S
T
O
P
E
th
e
rC
A
T
I
N
O
U
T
Et herCAT
EtherCAT
5.1 Terms
No.
Name
Unit
Explanation
1 Control word Word
Sets the mode of RTU-ECAT. When the content of the control word
is 8000Hex, RTU-ECAT is in STOP state. When the content of the
control word is 8001Hex, RTU-ECAT is in RUN state.
See section 6.3 for more details on the control word.
2 Status Word
Status includes Error register (for error information), LV state (for
voltage status), Error module number (for right-side module number)
and Error list (for extension module errors)
See section 6.3 for more details.
3
Digital input
points
Bit
The number of digital input points is a multiple of 8. The number is
regarded as 8 when it is less than 8 and as 16 when it is greater than
8 but less than 16.
4
Digital output
points
Bit
The number of digital output points is a multiple of 8. The number is
regarded as 8 when it is less than 8 and as 16 when it is greater than
8 but less than 16.
5
Special module
number
Unit
Number of special modules connected to RTU-ECAT
Range: 0~8
6
Input
data length
Word
The total length of input data of special modules on the right of
RTU-ECAT
7
Output
data length
Word
The total length of output data of special modules on the right of
RTU-ECAT