Details Of The Allocated Cio Area Words - Omron CJ1W-EIP21 - 10-2010 Operation Manual

CIO Area Allocations
User Settings
Offset
Bit
15
0 n
1 n+1
2 n+2
3 n+3
4 n+4
5
n+5
6 n+6
7
n+7
8 n+8
9
n+9
10 n+10
11
n+11
Communications status 1
12 n+12
Communications status 2
13
n+13
Communications status 3
14
n+14
15
n+15
16
n+16
17
n+17
18
n+18
19
n+19
20
n+20
21
n+21
22
n+22
23
n+23
24 FINS/TCP Connection Status
n+24
4-2-2

Details of the Allocated CIO Area Words

Unit Control Bits (CPU Unit to EtherNet/IP Unit) (n)
8 7
Unit control bits
(Reserved)
Unit status 1
Unit status 2
(Reserved)
Note The reserved words are regularly refreshed with all zeroes.
The functions of the allocated CIO Area words are described in the following
section.
15 14 13
n
Bit Switch
0 to 1 (Not used.)
2 Tag Data Link Start
Bit
0 Data direction
CPU Unit → EtherNet/IP Unit
EtherNet/IP Unit → CPU Unit
EtherNet/IP Unit → CPU Unit
EtherNet/IP Unit → CPU Unit
EtherNet/IP Unit → CPU Unit
EtherNet/IP Unit → CPU Unit
12 11 10 9 8 7 6 5
Status Manipulated
by
--- ---
ON User
OFF Unit
Section 4-2
4 3 2 1 0
Tag Data Link Start Bit
Tag Data Link Stop Bit
Adjust Clock Bit
Unit operation
---
The tag data link starts when this bit
is switched from OFF to ON.
Turned OFF by Unit after the tag
data link starts operating.
71