WAGO 750 Series User Manual

Board Support Package (BSP) • 95
Ethernet Interface Services
WAGO-I/O-SYSTEM 750
Linux Fieldbus Coupler
Dynamic assignments via dhcpcd
If a DHCP server is supposed to be requested after the start of the Linux
kernel, the dhcpcd program can beused. The program is in the /sbin directory
and can hence be started by any user.
The call is dhcpcd &
The DHCP client is started in the background and sends DHCP requests
regularly. With a correct reply, the client automatically configures the Ethernet
interface.
The program is not terminated if a valid response is received from a DHCP
server.
The call can also be a part of the boot script /etc/inittab, of course.
4.6.4 Checking the Network Connection
1. In order to check communication with the Linux fieldbus coupler and the
correct IP address assignment , start the DOS prompt via Start
menu/Programs/Command prompt .
2. Type the command ping using the IP address you assigned and using the
following sytax:
ping [blank] XXX . XXX . XXX . XXX (IP address).
Example: ping 10.1.254.202
Fig. 4-10: Example for a fieldbus node function test p012910d
3. After pressing the return key, your PC gets a response from the Linux
fieldbus coupler which is shown in the DOS promt.
Should the error message: "Request timeout“, appear, please verify your
input and compare it with the IP address you assigned.
After a successful test, you can close the DOS prompt. The node is now ready
to communicate.

WAGO 750 Series Specifications

General

Protection Class	IP20
Bus Couplers	PROFIBUS, CANopen, Ethernet
Modules	Digital Input, Digital Output, Analog Input, Analog Output
Mounting	DIN rail mounting
Voltage Supply	24 V DC (typical)
Communication Protocol	Depends on the bus coupler (e.g., PROFIBUS, CANopen, DeviceNet, Ethernet)
Digital Input Channels	Varies by module (e.g., 8, 16 channels)
Digital Output Channels	Varies by module (e.g., 8, 16 channels)
Analog Input Channels	Varies by module (e.g., 2, 4, 8 channels)
Analog Output Channels	1, 2, 4 channels (depending on module)
Width	12 mm, 24 mm (typical module widths)
Number of Channels	Varies by module type
Current Consumption per Channel	Varies by module type