750-841 WAGO, 750-841 Datasheet - Page 158

• 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

150 •
Fieldbus Communication
MODBUS Functions
Attention
The examples listed use the hexadecimal system (i.e.: 0x000) as their
numerical format. Addressing begins with 0.
The format and beginning of the addressing may vary according to the
software and the control system. All addresses then need to be converted
accordingly.
These functions allow digital or analog input and output data, and internal
variables to be set or directly read out of the fieldbus node.
Tab. 4-3: List of the MODBUS Functions in the Fieldbus Controller
To execute a desired function, specify the respective function code and the
address of the selected input or output data.
FC1:
FC2:
FC3:
FC4:
FC5:
FC6:
FC 11:
FC 15:
FC 16:
FC 22:
FC 23:
Function code
hexadec.
0x0010 Write Multiple
0x0016 Mask Write
0x0017 Read/Write
0x0B
0x0F
0x01
0x02
0x03
0x04
0x05
0x06
Read Coils
Read Input
Discretes
Read Multiple
Registers
Read Input
Registers
Write Coil
Write Single
Register
Get Comm
Event
Counters
Force Multiple
Coils
Registers
Register
Registers
Function
Writing of an
individual output
register
Access method and
Reading of several
single input bits
Reading of several
input bits
Reading of several
input registers
Reading of several
input registers
individual output
bit
Communication
event counter
Writing of several
output bits
Writing of several
output registers
Reading and
writing of several
output registers
Writing of an
description
R: None
W: Process image, PFC variables
W: Process image, PFC variables,
internal variables, NOVRAM
W: Process image, PFC variables,
NOVRAM
R/W: Process image, PFC variables,
NOVRAM
R: Process image, PFC variables
R: Process image, PFC variables
R: Process image, PFC variables,
internal variables, NOVRAM
R: Process image, PFC variables,
internal variables, NOVRAM
W: Process image, PFC variables
W: Process image, PFC variables,
internal variables, NOVRAM
Access to resources
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP