Rockwell Automation 1755-OF8 GuardPLC Controller Systems - Manual (Page 38)

38 Publication 1753-UM001C-EN-P - March 2010
Chapter 2 Installation
Communication
Connections Connections for safety and non-safety related communication for
GuardPLC controllers and distributed I/O modules are described in
the following sections.
GuardPLC 1200 Controller
The GuardPLC 1200 controller has an ASCII serial port for
non-safety-related communication and an Ethernet port for
safety-related communication.
Connect the ASCII port to any RS-232 device that has the capability to
send ASCII command strings to the controller. The controller replies
with a data variable string. See
Chapter 21 for more information on
ASCII communication
Use this illustration to connect the ASCII and Ethernet ports.
The pin assignment of the ASCII Serial port is shown below.
PLC
1200
ASCII
Serial Port
(Use 1761-CBL-PM02
Series C Cable)
Ethernet Port
(On Bottom of Controller)
Port for
Factory
Use
Only
Ethernet Dongle
4
5
7
1
2
8
6
3
Pin Function
1 24V DC
2 ground (GND)
3 request to send (RTS)
4 received data (RxD)
5 received line signal detector (DCD)
6 clear to send (CTS)
7 transmitted data (TxD)
8 ground (GND)
9 not applicable