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Super PLCs features two independent serial ports (1 RS232 and 1 RS485) that
speaks both MODBUS ASCII and RTU protocols fluently! These
super PLCs can work happily with many other third party MODBUS masters or slave
devices or with other super PLCs, thereby providing an open system solution as
well as is guarding against . It is ready to interface to vast majority of other
industrial software and hardware as described below.
1. SCADA Software Interface
The SCADA is the MODBUS master and the PLC
works as the slave.
Most of the well known SCADA (Supervisory Control and Data Aquisition)
software do come with MODBUS drivers which can immediately and painlessly
interface with the super PLCs. The following brands are some of those that are
either tested or known to work with the super PLCs:
write you software to meet your needs.
We make your interface as you like it.
1. National Instrument's Lookout
2. Elipse Software
2. Human Machine Interface (HMI)
The HMI is the MODBUS master and the PLC
works as the slave. The PLC's serial port is fully configurable from 300 to
500kbps, 7/8 data bit, 1/2 stop bits. odd/even/no parity and should work with
most HMI on the market.
HMIs are mostly standalone graphical LCDs with touch-screen display. The
HMI are mostly designed to work with PLCs using RS232 or RS485 and most of them
do support the MODBUS protocols.
The follow HMI are
either tested or known to work with the super PLCs
Use RIDDER's Panel-PC
1. Maple Systems
2. Taian HMI
4. GE-Fanuc Quickpanel
3. Controlling External RTU Devices
Any M-series Super PLC can also act as the MODBUS
master controlling other MODBUS ASCII or RTU slave devices. This is accomplished
incredibly easily using the built-in READMODBUS and
WRITEMODBUS commands supported by TBASIC.
The ability of the Super PLC to work as MODBUS host
eliminates the need to use a host computer just to collect data from a few
MODBUS or RTU devices. The T100MD1616+ can take the place of the host computer
for a much lower cost of deployment, more compact and much more reliable in
the hostile industrial environment.
Super PLC's Dual Independent MODBUS Ports
Amazingly, even the lowest cost
T100MD888+ super PLC comes with two independent UARTs for its two serial ports:
COMM1 is an RS232 port and COMM3 is an RS485 port. Both comm ports support
MODBUS ASCII and RTU and can run simultaneously! The built-in RS485 port means
networking a number of super PLCs will cost you extra $0.00 - (except maybe only for the price of the
twisted pair cable). You can therefore connect as many as 32 super PLCs to a
SCADA host very cost effectively. By replacing the standard RS485 driver with
1/4 or 1/8 power type (e.g. Linear Technology LTC1487) as many as 256 PLCs can
be networked together and pay next to nothing!
Another possible application is
to use the RS485 for inter-networking between the PLCs so that data can be
shared between the PLCs. You can use the MODBUS protocol or the native
protocol to accomplish this networking function. Hence you can have a network of
super PLCs in a big system (such as building automation control) networked
together by the RS485 , at the same time each PLC node can talk to other MODBUS
host or slave devices using its RS232 port. No other PLCs in the market today
can rival the vast communication flexibility of the M-series super PLCs
regardless of their price! This makes the T100MD1616+ an ideal choice for all
applications from standalone machine controller to large systems employing
hundreds of PLCs
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