Profibus-Dpv2 Functions; Time Control Over Dp-Slaves - Mitsubishi Electric Melsec Q Series User Manual

4
FUNCTIONS

4.3 PROFIBUS-DPV2 Functions

POINT

4.3.1 Time control over DP-Slaves

This function allows the QJ71PB92V to operate as the time master and set the time of
each DP-Slave.
Time data
DP-Slave
(1) Requests available on the QJ71PB92V
For whether the DP-Slave supports this function or not, refer to the manual for the DP-
Slave.
(a) Requests for writing time data
(1) To utilize PROFIBUS-DPV2 functions, use a DP-Slave that supports the
PROFIBUS-DPV2.
For details, refer to the manual for the DP-Slave.
(2) When using the PROFIBUS-DP2 function, set a "Min. slave interval" value
greater than the bus cycle time calculated from Pt, Tsdi and Lr. (
3.5.1)
If the "Min. slave interval" is less than the value calculated from Pt, Tsdi and
Lr, the processing of the PROFIBUS-DPV2 function may take time.
DP-Master (Class 1)
Power
QJ71
QCPU
supply
PB92V
module
Time setting
Time data
DP-Slave
Figure 4.13 Time Control Function
Table4.6 Request for Writing Time Data
Request Name
Time data write request
Time data write request (UTC
format)
4.3 PROFIBUS-DPV2 Functions
4.3.1 Time control over DP-Slaves
Time data
DP-Slave
Description
Sets the year, month, day, hour, minute and second, and writes the
time data.
Writes time data in UTC seconds
(year + month + day + hour + minute + second).
The set value, 9DFF4400 represents "January 1
H
00:00:00".
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