Data Sheet for Product

Siemens Industry, Inc. Page 5 of 6
Modbus 250 Driver on the PXC Series Platform
Functionality
for RTU communication (at and below the set value) and which FLNs are used for
TCP communication (above the set value).
● Up to 247 device addresses per FLN.
● TX-I/O Modules.
● Maximum of 8,000 APOGEE points per driver.
● Maximum of 250 Modbus points per driver.
NOTE:
The limit of 250 Modbus points per driver does not apply to I/O, addressing,
diagnostic, and P1 application points.
Functionality
The Modbus 250 Driver provides communication between the APOGEE® Automation
System and the vendor's Modbus system.
The Modbus 250 Driver can be loaded into PXC Modular or PXC-36 hardware. The
driver is a microprocessor-based, multi-tasking platform designed for multi-system
communication and control.
● When using a P2 ALN, the Modbus 250 Driver communicates with Insight
software, other APOGEE field panels and controllers, and the vendor's Modbus
system.
● When using a BACnet ALN, the Modbus 250 Driver communicates with Insight
workstation software, other APOGEE field panels and controllers, and the
vendor's Modbus system.
Through the Insight workstation, the Modbus points can be monitored and
commanded. The Modbus points integrated into the APOGEE Automation System can
be accessed by system applications, such as Powers Process Control Language
(PPCL), scheduling, trending, and alarming.
The Modbus 250 Driver will not affect, in any way, the operating sequence or safeties
as factory-programmed into the vendor's Modbus system.
NOTE:
BACnet Field Panel Web Server licenses LSM-FPWEB, LSM-FPWEBPL and LSM-
FPWEBPLHST are now retired. Launch Pad must be used instead and is available
for free download from Standard Apps/Partner Extranet.
Keys to Success
Ensure that all Modbus equipment to be integrated supports the Modbus RTU or TCP
protocols. The Modbus ASCII protocol is not supported.
Benefits
Systems integration brings the powerful facility control capabilities of the APOGEE
Automation System together with vendor system. Integrating the Modbus points
allows both systems to operate as a single system providing marked advantages in
the following:
● Reduced operating and training costs.
● Increased employee productivity.
● Increased diagnostic capabilities to extend equipment life.
● Improved systems information and control.
● Maximized energy savings.