750-841 WAGO, 750-841 Datasheet - Page 185

• Manufacturer Part Number: 750-841
• Description: CONTR.ETHERNET TCP/IP 10/100MBIT
• Manufacturer: WAGO

Specifications of 750-841

• Rohs Compliant: YES
• No. Of Digital Inputs: 10
• No. Of Digital Outputs: 10

4.2.5.5 Constant Registers
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP
The following registers contain constants, which can be used to test
communication with the master:
Register address 0x2022 (MODBUS Address 408227, with a word count of upto 8)
Value
Access
Description
Register address 0x2023 (MODBUS Address 408228, with a word count of upto 32)
Value
Access
Description
Register address 0x2000 (MODBUS Address 408193)
Value
Access
Description
Register address 0x2001 (MODBUS Address 408194)
Value
Access
Description
Register address 0x2002 (MODBUS Address 408195)
Value
Access
Description
Register address 0x2003 (MODBUS Address 408196)
Value
Access
Description
Register address 0x2004 (MODBUS Address 408197)
Value
Access
Description
Description, INFO_DATE
Read
Date of the firmware version, 8 words
Description, INFO_LOADER_INFO
read
Information to the programming of the firmware, 32 words
Zero, GP_ZERO
Read
Constant with zeros
Ones, GP_ONES
Read
Constant with ones. Is –1 if this is declared as "signed int" or MAXVALUE
if it is declared as "unsigned int".
1,2,3,4, GP_1234
Read
This constant value is used to test the Intel/Motorola format specifier. If the
master reads a value of 0x1234, then with Intel format is selected – this is the
correct format. If 0x3412 apears, Motorola format is selected.
Read
master. This will be used together with register 0x2004.
Read
master. This will be used together with register 0x2003.
Mask 1, GP_AAAA
This constant is used to verify that all bits are accessible to the fieldbus
Mask 1, GP_5555
This constant is used to verify that all bits are accessible to the fieldbus
Fieldbus Communication
MODBUS Functions
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