ProSoft Technology MVI46-DFCM - Manual (Page 67)

Reference MVI46-DFCM ♦ SLC Platform
DF1 Communication Module
ProSoft Technology, Inc. Page 67 of 103
October 20, 2008
Register Range File Start File End Content Size
5040 to 5069 N32:40 N32:69 Port 2 Setup 30
5070 to 5199 N32:70 N32:199 Reserved 130
5200 to 6399 N33:0 N38:199 Port 1 Commands 1200
6400 to 7599 N39:0 N44:199 Port 2 Commands 1200
7600 to 7700 N45:0 N45:199 Misc. Status Data 200
7800 to 7999 N46:0 N46:199 Command Control 200
8000 to 9999 N47:0 N56:199 Reserved 2000
All the data in the module is available to a remote host. This permits the host
device to remotely configure the module and view the status data.
Master Driver Mode
In Master Mode, the MVI46-DFCM module is responsible for issuing read or write
commands to slave devices on the DF1 network. These commands are user
configured in the module via the Master Command List received from the SLC
processor or issued directly from the SLC processor (event command control).
Command status is returned to the processor for each individual command in the
command list status block. The location of this status block in the module's
internal database is user defined. The following flow chart and associated table
describe the flow of data into and out of the module.
Step Description
1 The Master driver obtains configuration data from the SLC processor. The configuration
data obtained includes the number of commands and the Master Command List. These
values are used by the Master driver to determine the type of commands to be issued to
the other nodes on the DF1 network (Refer to the MVI46-DFCM Module Set Up Guide).
2 After configuration, the Master driver begins transmitting read and/or write commands to
the other nodes on the network. If writing data to another node, the data for the write
command is obtained from the module's internal database to build the command.