that the controller is programmable enables the user to
restricted by a pre-programmed unit or hardwired relays and timers.
The PROLOGIC modules plug into each other and the
module on the left plugs into the PL101. Up to eight modules
can plugged together.
The PL101 PLC is programmed in ladder logic. Procon’s
ProSoft windows-based PC software is used to generate the
ladder diagram, compile the program, and then download the
program to the PL101 via the Ethernet port on the front of the
The PL101 includes a web server which enables access to
internal parameters for configuration. This allows
configuration of IP address, default gateway IP address and
subnet mask. The web server can be accessed by most web
browsers. The PL101 supports the FTP protocol which enables
the web pages to be customized if required.
The PL101 is factory programmed with a default IP address of
169.254.111.111. This address must be changed before the
converter is added to an existing network.
The web page address for viewing the setup parameters is
The web page address for configuring the converter is
The master device which is polling the PL101 must be configured with the IP
address of thePL101 and with the Modbus ID of the PROLOGIC modules. The
Modbus ID of the PL101 is 0 (zero).
The PL101 communicates using the Modbus TCP protocol and the client must be
configured to use Port 502. This is a reserved port number for Modbus TCP