PLX3x Series ♦ Multi-Protocol Gateways
SIE Protocol
User Manual
ProSoft Technology, Inc.
Page 155 of 215
January 25, 2018
Either protocol in the PLX3x gateway can write data to and read data from the
user data area.
If the module is acting as a client/master, you create commands to read data
from external client/server devices and store the data in a specific location in
the user data area.
If the module is acting as a server/slave, the external client/master devices
write data to a specific location in the user data area.
Note: If you want to access module status data in the upper memory, you can use the data
mapping feature in the gateway to copy data from the module status data area to the user data
area. See Mapping Data in Module Memory (page 24). Otherwise, you can use the diagnostic
functions in ProSoft Configuration Builder to view module status data. For more information on the
module status data, see SIE Diagnostics (page 170).
