Technical data

5-140 Bosch Rexroth AG | Electric Drives and Controls Rexroth VCP-Operating Concept | R911305038 / 01
Standard Mode
The byte for the weekday is independent of the calendar and always
runs Modulo 6.
Create the names of the weekdays in a text list. To display the week-
days in the operating device, in any mask create the system variable
RTCDayofWeek with the representation type Selection Text. Link this
variable with the weekday text list.
5.18.2 Setting the Real Time Clock from the Controller
To update the real time clock data in the operating device from the con-
troller, you must firstly create a variable in which the controller will store
the date and time image. Enter this variable in the system parameters
for the real time clock in the field Setup.
Finally, write the control code 7FF9h in the serial message channel.
This instructs the operating device to read the date and time image
once from the agreed variable.
5.18.3 Transferring the Real-Time to the Controller
To transfer the real time clock data from the operating device to the
controller, you must firstly create a variable in which the operating
device will store the date and time image. Enter this variable in the sys-
tem parameters for the real time clock in the field Update.
Then specify a polling time with which you want the operating device to
write data at cyclical intervals into the variable.
You must order the names of the weekdays in the correct sequence.
You can select any starting point.
Value Text
0 Saturday
1 Sunday
2 Monday
3 Tuesday
4 Wednesday
5Thursday
6 Friday
Fig. 5-55: Text list for operating devices with a Z80-CPU or RISC-CPU