Communication   
11.29 DR 48 Date and time 2 
  SIWAREX WT241 
170  Manual, 05/2015, A5E36046748A 
11.29  DR 48 Date and time 2 
The SIWAREX module has its own hardware clock. You can set and read the current date 
and time using data record DR 48. The clock is buffered with a capacitor and continues to 
operate for up to approximately 70 hours without a supply voltage. If you are not using the 
Modbus protocol, data record DR 8 is used for the date and time. 
Procedure 
●  Set the date and time 
●  Transfer the data record to the SIWAREX module 
Table 11- 29  Assignment of data record 48 
Contains no. of data record 
Data record length information 
Information about which application the data 
record belongs to 
Information about current data record ver-
sion