Technical data
112 •  BACnet/IP Controller 750-830 
  Programming the PFC Using WAGO-I/O-PRO CAA 
 WAGO-I/O-SYSTEM 750 
BACnet/IP Controller 
Clock 
Click the link "Clock" to go to a Web site where you can specify the settings 
for the internal real-time clock. 
Here, enter the current time and date and also select standard or daylight sav-
ing time. 
Note 
The internal clock must be (re)set on initial startup, or after 6 days without 
power. The "I/O" LED for the controller will flash with the error code 1/10 
RTC-Powerfail if the clock is not set. 
Note 
Switch-over between standard and daylight saving time via Web-based man-
agement system is required when synchronizing the controllers in your net-
work using a time server. The change-over is resolved via function block 
PrgDaylightSaving, which you must integrate into the WAGO-I/O-PRO 
CAA using the library DaylightSaving.lib. From that point, change-over will 
be performed automatically, allowing all functions to be executed properly 
and at the right time. 
Note 
Call up the Web-based management system and set the actual time under 
"Clock" in order to restore proper functioning of the controller in the event of 
an RTC-Powerfail. The controller will then be fully operational again. 
Note 
If you are using the software "WAGO-I/O-Check" after a loss of power has 
occurred, error messages may be generated. Should this occur, call up the 
Web-based management system and set the actual time under "Clock". Then, 
call up the "WAGO-I/O-Check" program again. 
Note 
You can also use a WAGO-RTC module 750-640 at your node to utilize the 
actual time (encoded) in your higher-order control system. An even greater 
degree of accuracy is achieved using this "Real-Time Clock" module than 
that obtained using the real-time clock in the controller. 










