EndRun Meridian II, User Manual

Page: 126 / 240

M e r i d i a n I I U s e r M a n u a l 106
C H A P T E R T E N
107 M e r i d i a n I I U s e r M a n u a l
R E A R - P A N E L I / O
View the Serial Time Connector
On the front-panel display traverse to the Main Menu and then to CPU_I/O. This display lists any
connector on the CPU Module that has an optional I/O signal. Connectors are identified as A, B or C.
Select I/O-A, I/O-B or I/O-C) to see which signal is installed.
Or, you can use this console port command:
Command:
cpuio
MeridianII reply:
CPU I/O A - SERIAL TIME OUTPUT is Installed
Current Setting = (See systemio command)
Change the Serial Time Settings
On the front-panel display traverse to the Main Menu and then to Sys_I/O. If a Serial Time output is
installed in your unit, then there will be a selection for SerTimeOut. Select this and you will be able
to change the format, baud rate and parity.
Or, you can use these console port commands:
Command:
systemio
MeridianII reply:
System I/O Signal SERIAL TIME OUTPUT is Installed --
Current Serial Time Output Baudrate Setting = 9600
Current Serial Time Output Format Setting = SYSPLEX
Current Serial Time Output Parity Setting = ODD
Current NMEA Sentence 1 Setting = NONE
Current NMEA Sentence 2 Setting = NONE
Current NMEA Sentence 3 Setting = NONE
Command:
systemioconfig
MeridianII reply: Interactive script is started so you can change the Serial Time settings.
Sysplex Format
“Sysplex” means SYStem comPLEX and is a term used to describe computing on clusters of comput-
ers. The Sysplex option is designed to provide time synchronization for an IBM Sysplex Timer. It
can also be used for precise time synchronization by any computers that do not use NTP and have an
available serial port connection. The time contained in this string format is always UTC time. The
following string is sent once each second:
<SOH>DDD:HH:MM:SSQ<CR><LF>
<SOH> is the ASCII Start-of-Header character (0x01)
DDD is the day-of-year
: is the colon character (0x3A)
HH is the hour of the day
MM is the minute of the hour
SS is the second of the minute
Q is the time quality indicator and may be either:
<space> ASCII space character (0x20) which indicates locked
? ASCII question mark (0x3F) which indicates
the unsynchronized condition