SIE Protocol
PLX30 Series
User Manual
Ethernet and Serial Gateways
Page 168 of 200
ProSoft Technology, Inc.
September 19, 2012
9.1
SIE Functional Overview
The PLX30 Siemens Industrial Ethernet (SIE) protocol can be used to interface
easily with multiple Siemens Industrial Ethernet server-compatible instruments
and devices. The SIE protocol improves performance when controlling multiple
servers on a Siemens Industrial Ethernet network, by supporting up to 20 Clients.
The gateway’s Clients interface with processors (and other server-based
devices) on the SIE network using a user-constructed command list of up to 16
entries per Client
. The gateway’s internal database is used as the source for
write commands to the remote processors. Data collected from the processors
using read
commands is placed in the gateway’s database.
9.1.1 General Specifications
10/100 MB Ethernet Communication port
Actively reads data from and writes data to Siemens Industrial Ethernet
devices, using Siemens Industrial Ethernet protocol
Siemens Industrial Ethernet data types overlap in the gateway's memory
database, so the same data can be conveniently read or written as bit-level or
register-level data
Offers 20 Client connections with up to 16 commands each to talk to multiple
servers
Configurable floating-point data movement is supported
Status and error information generated by the gateway
9.1.2 Gateway Internal Database
Central to the functionality of the gateway is the internal database. This database
is shared between all the ports on the gateway and is used as a conduit to pass
information from one device on one network to one or more devices on another
network. This permits data from devices on one communication port to be viewed
and controlled by devices on another communication port.
In addition to data from the Client, status and error information generated by the
gateway can also be mapped into the internal database.
