Appendix A Time Sync Implementation; Table A-1: Timing; Table A-2: Unix Time Registers - GE Kelman MINITRANS User Manual

The product has a time-sync feature that allow users to synchronize the clock time on
the product. This Appendix explains the data format options for the "time sync" and its
implementation.
A.1 Time Format
Under the standard Modbus
Register Permissions
1200
1201
R/W
1202
1203
This R/W (read/write) register is in BCD format (Binary Coded Decimal). Some systems are
not compatible with this data format.
*Note: The time registers can be written separately in 5 seconds interval in any order.
This feature is available starting TransfixHost v1.12.4.
A.2 UNIX Epoch register
®
A UNIX Epoch register was added to the host board firmware (v1.12.2) to make systems
integration easier in cases of system incompatibility. Both register formats (BCD & UNIX)
will be maintained in future firmware versions and both affect the same single clock. The
details of the UNIX time registers are listed in Table A—2:
Register Access Version
Flags
1197 rg2,wg2 1.12.2
1198
These registers are readable and writable, but should be written together as a single 32
bit value.
MA-006- MINITRANS User Guide - Rev 2.1
Appendix A
register list, the timing is defined in Table A—1:
®
Table A—1: Timing
Group Size Description
UTC Clock: Years
UTC Clock: Months, days
4*
UTC Clock: Hours, minutes
UTC Clock: Seconds, Day of week
(0-6, 0 Sunday)
Table A—2: UNIX time registers
Storage Effect After
Class
RAM immediately
Time Sync Implementation
Data Format
YYYY (BCD)
MMDD (BCD)
HHMM (BCD)
SSWW (BCD)
Name Description
RTC_UNIX_TIME Current Time
UTC in UNIX
format
13-Oct-15
Data Format
32-bit integer
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