Mitsubishi Electric FX3U-CAN, User Manual

Page: 74 / 228

5 Introduction of Functions
5.6 Communication Profile Area
68
FX
3U
-CAN User's Manual
5.6.10 TIME
The TIME producer broadcasts the time stamp object. This TIME provides the simple network clock. The time
stamp contains the Time of day, which is represented by a 48 bit sequence. These sequences represent the
time in milliseconds after midnight (28 bits) and the number of days since 1984-01-01 (16 bits). Only one
Timestamp producer is allowed in the Network.
The time and the date have to be configured by setting BFM #51 to #57 (clock data).
In order to guarantee timely access to the network, the TIME is given a very high priority CAN-ID. CANopen
®
devices that operate a local clock may use the TIME object to adjust their own time base to that of the time
stamp object producer.
The consuming and producing setting can be directly changed by BFM #50.
In case of time overflow (time later than 31st December 2099 23:59.59), the time returns to 1st January 2000
00:00:00. Buffer memory display for year will be 00 to 99 in all cases.
Note for TIME consuming: A received Time stamp before 1st January 2000 00:00.00 is set to 1st January
2000 00:00:00.
→
For time stamp BFM #50 to #59, refer to Section 6.19
Object H1012: COB-ID time stamp object
→ For the resulting COB-ID, refer to Subsection 5.6.1
5.6.11 Store parameters
To store all parameters to non-volatile memory, write SDO H65766173 (ISO8859 String code: "save") to
Object Index H1010, Sub-Index H01 or use the store command in the CIF. After each power-up or reset, the
saved parameters will be valid.
→
For the store command in the CIF, refer to Section 10.6
Note
For CDCF files stored on Object H1F22, the store parameter command is not necessary.
On read access, the CANopen
®
device gives back information about its storage functionality:
Bit No. Item Description
Bit 0 to 10 11-bit CAN-ID 11-bit CAN-ID of the CAN base frame
Bit 11 to 28 - Bit 11 to 28 fixed to OFF (0).
Bit 29 - Bit 29 fixed to OFF (0).
Bit 30 produce
OFF (0): Do not produce TIME Messages
ON (1):
Produce TIME Messages
Note: The FX
3U
-CAN needs to be active NMT
Master to produce TIME messages.
Bit 31 consume
OFF (0): Do not consume TIME Messages
ON (1):
Consume TIME Messages
Bit No. Description
Bit 0
OFF (0): Device does not save parameter on command.
ON (1):
Device saves parameter on command. (FX
3U
-CAN)
Bit 1
OFF (0): Device does not save parameter without user request. (FX
3U
-CAN)
ON (1): Device saves parameter without user request.
Bit 2 to 31 Reserved
Request
TIME producer TIME consumers
Time stamp
Indication
Indication
Indication
11-bit CAN-ID H00000 H0 produce consume
31 29 26 ... 11 10 ... 0 30