Technical data

Fieldbus Communication • 237
MODBUS Functions
WAGO-I/O-SYSTEM 750
BACnet/IP Controller
Register address 0x100B
Value Save Watchdog Parameter
Access write
Default 0x0000
Description With writing of '1' in register 0x100B
the registers 0x1000, 0x1001, 0x1002 are set on remanent.
4.3.5.2 Diagnostic Functions
The following registers can be read to determine errors in the node:
Register address 0x1020 (MODBUS Address 404129)
Designation LedErrCode
Access read
Description Declaration of the Error code (see section 3.1.8.4 for error code definitions)
Register address 0x1021 (MODBUS Address 404130)
Designation LedErrArg
Access read
Description Declaration of the Error argument (see section 3.1.8.4 for error code defini-
tions)
4.3.5.3 Configuration Functions
The following registers contain configuration information of the connected
modules:
Register address 0x1022 (MODBUS Address 404131)
Designation CnfLen.AnalogOut
Access read
Description Number of word-based outputs registers in the process image in bits (divide
by 16 to get the total number of analog words)
Register address 0x1023 (MODBUS Address 404132)
Designation CnfLen.AnalogInp
Access read
Description Number of word-based inputs registers in the process image in bits (divide
by 16 to get the total number of analog words)