Varec 8300 series, Installation And Operation Manual, Page: 39 / 150

8303 Software Description
Varec, Inc. 29
4.4 Common Software Blocks
This section describes Software Blocks included with the base unit of the 8303.
4.4.1 Clock (CLK)
The Clock point provides access to the System Clock. Standard time format is in the
form of MM/DD/YY HH:MM:SS.
Parameters
The database parameters used by the CLK point are listed and described below:
4.4.2 Communications (COM)
The Communications point reports the status and controls the operation of the
communications interfaces. COM points are automatically created by the system at
initialization.
Parameters
The database parameters used by the COM point are listed and described below:
Configuration Parameters Function
TZ Time Zone string
Dynamic Parameters Function
SysTime System Time in the form MM/DD/YY HH:MM:SS. Writing to this value will
change the system time
SysTicks Time if “ticks” format. Ticks are incremented every 10 msec, with the initial
value of 0 equal to Jan. 1, 1970 at 00:00:00.
timezone Time zone relative to GMT. The timezone is entered in seconds.
Example: Eastern Time Zone = 18000; Pacific = 28800
daylight Daylight Saving Flag
Configuration Parameters Function
Protocol Protocol handler assigned to the ComPort. Valid values are:
Disabled
RTU Slave
Modbus Slave
TSU Slave
The defaults are:
COM 0: RTU Slave - 9600 Baud
COM 1: Modbus Slave- 9600 Baud
Mode The Mode parameter is used in conjunction with the Protocol. Different
protocols will use the Mode in different ways, depending on the needs of
the protocol.
ComPort Communications Port number. Valid values are 0-3. You should never
modify the ComPort parameter.