Novatech Bitronics M87X Series, Manual

Page: 168 / 184

ML0021 August 15, 2018
152
Copyright 2018 Bitronics, LLC
condition since it transitions from 0 to 1 when the recorder starts then returns to 0 (its
initialized state) when the recording is completed. Therefore, no deliberate step is
necessary to re-initialize a soft bit, as was required for “Waveform Recorder 1 Started”
in step 2 of Example 2.
3. On the GSSE (Virtual I/O) page, define a GSSE Tx Name (“Unit_1” in this example)
which is unique to the device sending the GSSE message as illustrated near the
bottom of Figure A15.
Figure A 15
4.
When a cross-trigger is received from another unit, it comes in the form of a GSSE
message. Each unique GSSE message must be associated with specific numbered
Virtual Input as seen on top half of the GSSE (Virtual I/O) page of the 70 Series
Configurator shown in Figure A15. Each device only needs to transmit one GSSE to
cross-trigger any number of other devices. When setting up for receiving a cross-
trigger, however, the device must be configured to receive GSSE messages from every
other device from which a cross-trigger may be expected. For example, in a substation
with four inter-triggered M871 units, each unit would transmit one GSSE and be
configured to receive GSSE messages from all three other units. Up to thirty-two
separate Virtual Inputs may be defined for each device.
5. On the Recorder Triggers page of the 70 Series Configurator, each of the Virtual Inputs
defined in step 4, above, is then used to initiate the oscillography recorder and make an
entry in the SOE Log. See Figure A16. This completes the configuration settings for
cross-triggering by means of GSSE.