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PLC communication is a vital component of any control system. With the many networking options available, PLC systems need to have adequate ports and protocols. The DirectLOGIC 305 CPUs have built-in serial ports; optional modules can provide protocol conversions or additional communication ports.
The DL305 programmable logic controller provides communications and networking capabilities with the following
modules and converters:
D3-232-DCU - Attaches to the front of the DL305 CPU
to provide RS232C programming port connection for use with personal
computers, operator interfaces, etc.
FA-ISOCON - Universal, isolated RS232C to RS422/
RS485 converter. Switch selectable for ANTE (Automatic
Network Transmitter Enable) or RTS/CTS handshaking, works with all DirectLogic
PLC families and virtually any serial device. Isolation reduces
network data problems caused by noisy environments. Power directly
from the 5 V pins on most DirectLogic CPU ports, from
a PLC base 24 VDC power supply, or from an external power supply.
Cables and connectors to most COM ports (RJ12, DB9-female,
DB25-male) provided. Integral DIN rail clamp or can be panel
mounted. Manual included with product.
FA-UNICON - In-line, DB25, RS232C to RS422/ RS485
converter. Connectors to
connect a DirectLOGIC RJ11/ RJ12 RS232C port to a DB25
female RS422/ RS485 connector. Power directly from the PLC base 24
VDC supply or an external power supply. Connection to a PC RS232 COM
port requires a custom cable. A pin 4-20 jumper is required on the
FA-UNICON for DB9. NOTE:The FA-UNICON
provides no signal isolation, so it is not recommended for noisy