WAGO 750 Series User Manual

86 • Board Support Package (BSP)
Ethernet Interface Services
WAGO-I/O-SYSTEM 750
Linux Fieldbus Coupler
In order to provide for cyclic time monitoring via SNTP, MSNTP can also be
started as a daemon. Additionally, MSNTP should be registered as respawn
process in the /etc/inittab file in order to automatically activate time
monitoring when starting the Linux fieldbus coupler and to restart the process
automatically if the program crashes. The entry in the file /etc/inittab looks as
follows:
/etc/inittab:
::respawn:/bin/msntp –r –P no –x <minutes> <IP/Hostname>
Example: ::respawn:/bin/msntp –r –P no –x 10 192.168.1.11
This would mean that the time would be checked every 10 minutes. The entry
• r means that the process sets the time via settimeofday().
• P no means that any time error is corrected
• x 10 means that the process is a daemon and that it will take at least 10
minutes before it repeats its query.
Further information on the parameters can be found on the msntp main page
(e.g. under: http://pigtail.net/LRP/msntp.html).

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