Gmwin Remote Connection; Introduction - LG GLOFA-GM Series User Manual

Chapter 7 Communication function

7.5 GMWIN remote connection

7.5.1 Introduction

If PC executed by GMWIN is located far from GLOFA-PLC, remote PLC program can be controlled for download,
upload, debugging, monitorering, etc. through GMWIN remote connection function of Cnet I/F module. Especially in
case that GMWIN is located far away from PLC, PLC CPU can be conveniently accessible through telephoning,
remote connecting and computer linked modem connecting functions in GMWIN via public line. Remote connection
which is supported in Fnet, Mnet, Enet and Cnet of GLOFA PLC communication modules allows connection between
networks to control remote PLC program via multi-steps connection conveniently. GMWIN remote connection via
Cnet I/F module are available all for 2 cases of remote connection between Cnet I/F modules where GMWIN and
PLC are directly connected via RS-232C and modem connection between GMWIN and PLC.
7.5.2 GMWIN remote connection
[Figure 7.23] shows an example of remote connection between GMWIN and PLC via modem. As shown in the figure,
this structure is required for connection with PLC via phone line, dedicated line modem or wireless modem if GMWIN
operated PC is located far from PLC. In this case, GMWIN shall be connected via direct modem with Cnet I/F module
and the modem shall be set to connection type in connection option. Modem connection has two types of dedicated
modem connection via dedicated line and dial-up modem connection via public line.
1) Dial-up modem connection
[Figure 7.23] shows an example of dial-up modem connection. Dial-up modem connection is to connect dial-up
modem with PC and Cnet I/F module via telephoning for remote connection through added function services to
start/stop phone call. Namely, make a phone call first in GMWIN to apply remote connection after phone is connected,
via PC linked modem of external or internal dial-up type, and via external modem for Cnet side.
Refer to 4.4 How to connect to modem in this manual for selection of dial-up modem connected with module and
connection/initial setting of dial-up modem of Cnet I/F module.
7-122