ProSoft Technology MVI56-BSAPS - Manual (Page 64)

MVI56-BSAPS ♦ ControlLogix Platform Reference
Bristol Babcock Serial Slave Module
Page 64 of 83 ProSoft Technology, Inc.
September 22, 2008
Second example: host sends Analog 775 to Port 1 for address 14. The block will
look like this:
9050 Passthrough block for Port 2
x Previous read block number prior to pass-through block was sent.
6 6 registers count from this register to the last register of the last element
1 1 element is written by the host
14 address 14 is configured in the configuration
0 type analog
-16834 first register for analog floating point
17473 second register for analog floating point
5.2.4 Data Flow Between the MVI56-BSAPS Module and the
ControlLogix Processor
The following section describes the flow of data between the two pieces of
hardware (ControlLogix processor and MVI56-BSAPS module). Each port on the
module is configured to emulate a BSAP RTU slave device. The operation of
each port is dependent on this configuration.
Slave Driver
The Slave Driver Mode allows the MVI56-BSAPS module to respond to data read
and write commands issued by a master on the BSAP network. The following
flowchart describes the flow of data into and out of the module. The Module
Setup section provides a list of the parameters that must be defined for a slave
port.
All write requests will be placed in the database. The following illustration shows
the data flow for a slave port.