Raco Verbatim, Owner'S Manual

Page: 129 / 246

MODBUS Interface
Verbatim Owner's Manual F-3
When an operator calls the autodialer, the status of RCs will be reported and the
user may reprogram parameters of RCs over-the-phone. When accessing the
autodialer over-the-phone, all user functions that could result in the alteration of
ANY data register can be made subject to correct entry of an access code.
Alarm criteria, trip delays and alarm call groupings are established in a fashion
similar to normal physical channels. RCs associated with PLC discrete data
registers support the normally open or closed criteria. RCs associated with PLC
analog or integer data registers support high and low set points.
Associating a net address to a RC implicitly establishes the channel as digital or
analog. For RCs, the default alarm criteria for both digital and analog channels
is ‘disarmed’. Attempts to set analog criteria on digital channels, and vice versa
will cause an error announcement. If the net address for an RC already
configured is re-programmed so that the type (analog or discrete) of data
changes, the criteria will automatically be set to ‘no alarm’. There is no run-
time or totalizer capability for any of the RCs.
At the front panel, the LED channel status display shows all Remote and
Physical Channels. Since the count of total Physical and Remote channels is
greater than the usual 32 status LEDs, channels are combined into groups so
that the status of all channels may be observed.
F.3 Connecting to the PLC Network
In most cases, the cable supplied by RACO will already be connected at the
Verbatim autodialer end to a modular jack inside the unit. If this is not the case,
please refer to the drawings in appendix H.
Note:
Refer to the cable drawings in the appendices to identify your type of PLC
network connection.