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CN8-SWÔ UserÕs Guide
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1.1.6 Local Alarms
If a controller that supports the Omega Plus Protocol is in alarm, the A1 or A2 indicator
on the controllerÕs Òfront panelÓ on the main display will appear to be lit (red), matching
the behavior of the A1 and A2 indicators on the controller faceplate. The process value
on the CN8-SW graphic display will also change color from magenta (normal) to red
(alarm).
As a bonus, the CN8-SW supports Òlocal alarmsÓ. These two process alarms can be
configured in CN8-SW for each controller on the network, including controllers that do not
provide an alarm function of their own, and controllers that support the original Omega
Protocol.
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If a controllerÕs PV exceeds (high alarm) or falls below (low alarm) the
configured local alarm limit, the alarm indicators on the main graphic display will ÒlightÓ
and the PV will change to red.
1.2 Hardware and Software Requirements
1.2.1 CN8-SW Computer
The computer used to run the CN8-SW software must meet the following requirements:
· 4 8 6 S X o r b e t t e r p r o c e s s o r
· 1 M B o f d i s k s p a c e f o r C N 8 - S W s o f t w a r e ( p l u s a d d i t i o n a l s p a c e f o r l o g f i l e s )
· W i n d o w s 9 5 o r W i n d o w s 9 8
· Available COM (serial) port or RS-485 port. Communication between the PC and an
RS-485 network can be accomplished using a COM port and an RS-232-to-RS-485
converter. Communication with a single controller using a COM port for an RS-232
link does not require a converter, but does require an adapter.
1.2.2 Controllers
Any controller that uses the Omega Plus Protocol, and has an appropriate
communication option card can communicate with the CN8-SW computer.
· O n e - t o - o n e c o m m u n i c a t i o n w i t h t h e C N 8 - S W c o m p u t e r r e q u i r e s a n
R S - 2 3 2 o r R S - 4 8 5 c a r d .
· T o b e p a r t o f a m u l t i - d r o p n e t w o r k , t h e c o n t r o l l e r m u s t h a v e a n R S - 4 8 5 o p t i o n
c a r d i n s t a l l e d .
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At the time of publication, the following controllers support the Omega Plus Protocol: Series CN8500
(1/16 DIN, 1/8 DIN and _ DIN). If you have a question about the protocol supported by a new model,
please call your Omega sales / service representative at: 1-800-826-6342 in the U.S.A. and Canada and
(95) 800-TC-OMEGA
SM
in Mexico and Latin America.