Data Sheet for Product

Page 4 of 8 Siemens Industry, Inc.
Modbus Driver on the PXC Series Platform
Functionality
Notes on System Architecture
The Modbus Driver in RTU Slave Mode (Figure 3), with either Firmware 2. x or 3. x ,
supports the following:
● BACnet MS/TP or BACnet/IP ALN on Firmware 3.
x .
If the driver is on a BACnet MS/TP network, you can use a standard field panel
with Firmware Revision 3.1 or later as a router to connect to an Insight
workstation. Do not use an Integration Driver as the router.
● One physical FLN
● The driver can be configured to represent between 1 and 247 devices on the
Modbus communication link.
● TX-I/O Modules.
● Maximum of 8,000 APOGEE points per driver.
Modbus RTU Slave mode is an exclusive mode of the Modbus Driver and uses FLN 1
only. No other Modbus modes are available when the driver is in Modbus RTU Slave
mode.
Figure 4: System Architecture—Modbus RTU Master, Modbus TCP Client, and Modbus RTU over Ethernet
on Firmware Revision 2.x.