Mapping of an IL230x-B730
An IP-Link system always starts with a IL230x-B730 and some (max. 120) extension modules. The mapping depends on the number and type of the connected extension modules.
Rule: First all byte oriented extensions appear in the mapping, in the sequence of their appearance in the IP-Link ring. After that, all bit oriented (digital) extensions in their sequence, rounded to 8 Bit.
Sample 1
System:
- IL2301-B730
- IE1001
- IE1002
- IE2042
|
Module |
Position |
Input |
Output | ||||
|---|---|---|---|---|---|---|---|
|
Size |
Function |
Offset |
Size |
Function |
Offset | ||
|
IL2301-B730 |
1 |
4 Bit |
2 read |
0..3 |
4 Bit |
1 read |
0..3 |
|
3 read |
0x0800 (Bit 0..3) | ||||||
|
5 write |
0..3 | ||||||
|
3, 4 read |
0x0000 (Bit 0..3) |
6 write |
0x0800 (Bit 0..3) | ||||
|
15 write |
0..3 | ||||||
|
16 write |
0x0800 (Bit 0..3) | ||||||
|
IE1001 |
2 |
8 Bit |
2 read |
4..11 |
- | ||
|
3, 4 read |
0x0000 (Bit 4..11) | ||||||
|
IE1002 |
3 |
8 Bit |
2 read |
12..19 |
- | ||
|
3, 4 read |
0x0000 (Bit 12..15) | ||||||
|
IE2042 |
4 |
- |
8 Bit |
1 read |
4..11 | ||
|
3 read |
0x0800 (Bit 4..11) | ||||||
|
5 write |
4..11 | ||||||
|
6 write |
0x0800 (Bit 4..11) | ||||||
|
15 write |
4..11 | ||||||
|
16 write |
0x0800 (Bit 4..11) | ||||||
Modbus always work with a size 16 Bit or one word. In this sample a word is transmitted, but the last bits are filled with "0".
Sample 2
System:
- IL2301-B730
- IE1001
- IE3312
- IE3112
- IE4112
- IE2302
- IE2042
|
Modul |
Position |
Input |
Output | ||||
|---|---|---|---|---|---|---|---|
|
Size |
Function |
Offset |
Size |
Function |
Offset | ||
|
IE3312 |
3 |
4 Words |
3, 4 read |
0x0000..0x0003 |
- | ||
|
IE3112 |
4 |
4 Words |
3, 4 read |
0x0004..0x0007 |
- | ||
|
IE4112 |
5 |
- |
4 words |
3 read |
0x0800...0x0803 | ||
|
6 write |
0x0800...0x0803 | ||||||
|
16 write |
0x0800...0x0803 | ||||||
|
IL2301-B730 |
1 |
4 Bit |
2 read |
0..3 |
- | ||
|
3, 4 read |
0x0008 (Bit 0..3) | ||||||
|
IE1001 |
2 |
8 Bit |
2 read |
4..11 |
- | ||
|
3, 4 read |
0x0008 (Bit 4..11) | ||||||
|
IE2302 |
6 |
4 Bit |
2 read |
12..15 |
4 Bit |
1 read |
0..3 |
|
3 read |
0x0804 (Bit 0..3) | ||||||
|
5 write |
0..3 | ||||||
|
3, 4 read |
0x0008 (Bit 12..15) |
6 write |
0x0804 (Bit 0..3) | ||||
|
15 write |
0..3 | ||||||
|
16 write |
0x0804 (Bit 0..3) | ||||||
|
IE2042 |
7 |
- |
8 Bit |
1 read |
4..11 | ||
|
3 read |
0x0804 (Bit 4..11) | ||||||
|
5 write |
4..11 | ||||||
|
6 write |
0x0804 (Bit 4..11) | ||||||
|
15 write |
4..11 | ||||||
|
16 write |
0x0804 (Bit 4..11) | ||||||