Real-Time Clock Wiring (Ptc901); Reviewing The Front Buttons And Display; Programming Mode Operation; Real-Time Clock Synchronization Figure - Omega Engineering PTC900 User Manual

4.6 REAL-TIME CLOCK WIRING (PTC901)

Time synchronization between
PTC901 meters can be accomplished through a
hardware interface on the Real-Time Clock option
card. This RS485 type interface allows connection
of up to 32 PTC901 meters in a two-wire
multidrop network, at distances up to 4000 ft.
In a synchronization network, one PTC901
meter is programmed as the Host, while all other
meters are programmed as Slaves. Once every
hour, the Host meter outputs
synchronization pulse onto the network. Upon
receiving the synchronization pulse, each Slave
meter automatically adjusts the minutes and
seconds of its RTC Time setting to synchronize
with the Host.
5.0 R
EVIEWING THE
KEY DISPLAY MODE OPERATION
DSP Index display through Timer, Cycle Counter, Date, and Time
PAR Access Programming Mode
F1 Function key 1; hold for 3 seconds for Second Function 1 **
F2 Function key 2; hold for 3 seconds for Second Function 2 **
RST Reset (Function key) ***
* Cycle counter and Real-Time Clock displays are locked out in Factory Settings.
** Factory setting for the F1 and F2 keys is NO mode.
*** Factory setting for the RST key is
multiple
a time
F
RONT
(Reset Display)

Real-Time Clock Synchronization Figure

B
UTTONS AND

PROGRAMMING MODE OPERATION

Exit programming and return to Display Mode
Store selected parameter and index to next parameter
Increment selected parameter value or selections
Decrement selected parameter value or selections
Selects digit location in parameter values
10
D
ISPLAY