Allen-Bradley 1440-SDM02-01RA, Руководство пользователя, Страница: 110 / 168

110 Rockwell Automation Publication 1440-UM001D-EN-P - September 2016
Chapter 3 Operate the Module
Bit-Strobe Message Format
The Bit-Strobe command sends 1 bit of output data to each XM slave whose
node address appears in the master scanlist.
The Bit-Strobe command message contains a bit string of 64 bits (8 bytes) of
output data, one output bit per node address on the network. One bit is
assigned to each node address supported on the network (0…63) as shown in
Figure 45 .
Figure 45 - Bit-Strobe Command
The XM-124 module uses the bit received in a Bit-Strobe connection as a
trigger event. When the bit number corresponding to the module node address
is set, the module collects the triggered trend data and stores the spectrum or
waveform data.
The XM-124 module does not send data in the Bit-Strobe response.