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Register address 0x102A (MODBUS Address 404139, with a word count of 1)
Designation
Access
Description
Register address 0x1030 (MODBUS Address 404145, with a word count of 1)
Designation
Access
Default
Description
Register address 0x1031 (MODBUS Address 404146, with a word count of 3)
Designation
Access
Description
Register address 0x2030 (MODBUS Address 408241, with a word count of upto 65)
Designation
Access
Description
Register address 0x2031 (MODBUS Address 408242, with a word count of upto 64)
Designation
Access
Description
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP
Modbus TCP Connections
read
Number of TCP connections
Configuration MODBUS/TCP Timeout
read / write
0x0000
This is the maximum number of milliseconds the buscoupler will allow a
ModbusTCP connection to stay open without receiving a Modbus request.
Upon timeout, idle connection will be closed. Outputs remain in last state.
Default value is 0 (timeout disabled).
Read the MAC-ID of the coupler
read
This register gives the MAC-ID, with a length of 3 words
Description of the connected I/O modules
Read modules 0 ... 64
Length 1-65 words
These 65 registers identify the coupler and the first 64 modules present in a
node. Each module is represented in a word. Because item numbers cannot
be read out of digital modules, a code is displayed for them, as defined
below:
Bit position 0
->
Bit position 1
->
Bit position 2-7
->
Bit position 8-14
->
Bit position 15
->
Examples:
4 Channel Digital Input Module = 0x8401
bit
15
14 13 12 11 10 9
code
1
0 0 0 0
hex
8
2 Channel Digital Output Module = 0x8202
bit
15 14 13 12 11 10 9
code
1 0 0
0
0
hex
8
Description of the connected busmodules
read modules 65 ... 128
Length 1-64 words
These 64 registers identify the 2nd block of I/O modules present (modules
65 to 128). Each module is represented in a word. Because item numbers
cannot be read out of digital modules, a code is displayed for them, as
defined below:
MODBUS Functions
Internal Variables
Input module
Output module
not used
module size in bits
Designation digital module
8
7
6
5
1
0
0
0
0
4
0
8
7
6
5
0
1
0
0
0
2
0
• 153
4
3
2 1 0
0
0
0
0 0
1
1
4
3
2 1 0
0
0
0
0 1
0
2
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