YOKOGAWA F3LC11-1F, User Manual

Page: 151 / 202

C1-1
IM 34M6H41-01E 3rd Edition : Aug. 1, 2005-00
C1. Overview
The FA-M3 Personal Computer Link Module (F3LC11-1N) has an RS-232-C
communication port. The F3LC11-2N also has an RS-422-A/RS-485 communication port.
The RS-232-C port enables communication with a higher-level computer such as a
personal computer, or a display with a PC interface on a one-to-one basis. The RS-422-A
port allows a maximum of 10 FA-M3 modules to be connected, and the
RS-485 port allows up to 32 modules to be connected.
Using commands with station numbers specified by higher-level computer, users can
monitor or set ladder sequence devices, start or stop programs, and load or save programs
as well. New ladder programs are not necessary for the FA-M3 for this communication.
The mounting of the module, including modules with equivalent functions realized through
the open I/O architecture, depends on the CPU module applications.
Refer to Table C1.1. Figure C1.1 shows an example of connecting the personal computer
link module.
Personal computer
FA-M3
RS-422-A/RS-485
F3LC11-2N
Personal computer link module
RS-485
Display with PC I/F
F3LC11-1N
Personal computer
link module
RS-232-C
FA-M3
F0101.EPS
Figure C1.1 Example on Connecting a Personal Computer Link Module