Data Sheet for Product

Page 2 of 3 Siemens Industry, Inc.
Modbus 250 Driver on the TC Series Platform
Functionality
● Three physical FLNs (FLN 1 through FLN 3) on TC Modular hardware can be
used for connecting and addressing Modbus RTU devices on RS-485 FLNs.
● Up to two physical FLNs (FLN 1 through FLN 2) on TC-36 hardware, depending
on ALN chosen, can be used for connecting and addressing Modbus RTU devices
on RS-485 FLNs.
● With Firmware 3.5 and later, one physical FLN (1) on the BACnet/IP TC-24 and
TC-16 hardware can be used for connecting and addressing Modbus RTU devices
on RS-485 FLNs. In addition, the Ethernet port may also be used for Mobus TCP
or Modbus RTU over IP.
● Up to 95 virtual FLNs (6 through 100) for mapping devices through an Ethernet
TCP/IP network.
● Up to 95 virtual FLNs (6 through 100) for mapping devices accessed through
Modbus TCP and/or Modbus RTU over Ethernet.
● Up to 247 device addresses per FLN.
● Up to 100 different applications per driver.
● TX-I/O Modules.
● Maximum of 8,000 TALON points per driver.
● Maximum of 250 Modbus points per driver.
Functionality
The Modbus 250 Driver provides communication between the Siemens Automation
System and the vendor's Modbus system.
The Modbus 250 Driver can be loaded into TC Modular or TC-36 hardware. The driver
is a microprocessor-based, multi-tasking platform designed for multi-system
communication and control. The Modbus 250 Driver communicates with Siemens
software, other TALON field panels and controllers, and the vendor's Modbus system.
Through the BACnet workstation, the Modbus points can be monitored and
commanded. The Modbus points integrated into the TALON 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.T, LSM-FPWEBPL.T and
LSM-FPWEBPLHST.T are now retired. Launch Pad must be used instead and is
available for free download from the Partner Extranet Web site.
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 TALON
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.